./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33cf58268090640beca4b79cf718f2ee2d6c29dee3e4b3e200f8bf0a7c295123 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 06:25:00,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 06:25:00,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 06:25:00,718 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 06:25:00,718 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 06:25:00,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 06:25:00,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 06:25:00,722 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 06:25:00,724 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 06:25:00,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 06:25:00,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 06:25:00,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 06:25:00,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 06:25:00,727 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 06:25:00,728 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 06:25:00,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 06:25:00,730 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 06:25:00,731 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 06:25:00,732 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 06:25:00,734 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 06:25:00,735 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 06:25:00,736 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 06:25:00,737 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 06:25:00,738 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 06:25:00,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 06:25:00,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 06:25:00,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 06:25:00,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 06:25:00,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 06:25:00,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 06:25:00,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 06:25:00,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 06:25:00,746 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 06:25:00,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 06:25:00,747 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 06:25:00,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 06:25:00,748 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 06:25:00,748 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 06:25:00,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 06:25:00,749 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 06:25:00,750 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 06:25:00,751 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 06:25:00,770 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 06:25:00,770 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 06:25:00,771 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 06:25:00,771 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 06:25:00,771 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 06:25:00,772 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 06:25:00,772 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 06:25:00,772 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 06:25:00,772 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 06:25:00,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 06:25:00,773 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 06:25:00,773 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 06:25:00,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 06:25:00,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 06:25:00,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 06:25:00,774 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 06:25:00,775 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 06:25:00,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 06:25:00,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 06:25:00,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 06:25:00,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 06:25:00,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 06:25:00,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 06:25:00,776 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 06:25:00,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 06:25:00,776 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 06:25:00,776 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 06:25:00,777 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 06:25:00,777 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 06:25:00,777 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33cf58268090640beca4b79cf718f2ee2d6c29dee3e4b3e200f8bf0a7c295123 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 06:25:01,085 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 06:25:01,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 06:25:01,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 06:25:01,104 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 06:25:01,104 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 06:25:01,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-30 06:25:02,352 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 06:25:02,547 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 06:25:02,548 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c [2023-08-30 06:25:02,553 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c366661e7/6a930aae398b4eb19df84d7b3d9555e1/FLAGd6a49c787 [2023-08-30 06:25:02,566 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c366661e7/6a930aae398b4eb19df84d7b3d9555e1 [2023-08-30 06:25:02,569 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 06:25:02,570 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 06:25:02,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 06:25:02,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 06:25:02,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 06:25:02,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e8434aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02, skipping insertion in model container [2023-08-30 06:25:02,575 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 06:25:02,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 06:25:02,721 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c[1991,2004] [2023-08-30 06:25:02,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:25:02,734 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 06:25:02,755 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1.wvr.c[1991,2004] [2023-08-30 06:25:02,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 06:25:02,768 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 06:25:02,769 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 06:25:02,774 INFO L208 MainTranslator]: Completed translation [2023-08-30 06:25:02,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02 WrapperNode [2023-08-30 06:25:02,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 06:25:02,776 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 06:25:02,776 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 06:25:02,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 06:25:02,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,816 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 69 [2023-08-30 06:25:02,816 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 06:25:02,817 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 06:25:02,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 06:25:02,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 06:25:02,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,843 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,849 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,851 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,856 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 06:25:02,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 06:25:02,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 06:25:02,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 06:25:02,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (1/1) ... [2023-08-30 06:25:02,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 06:25:02,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:02,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 06:25:02,907 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 06:25:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 06:25:02,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 06:25:02,939 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 06:25:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 06:25:02,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 06:25:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 06:25:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 06:25:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 06:25:02,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 06:25:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 06:25:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 06:25:02,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 06:25:02,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 06:25:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 06:25:02,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 06:25:03,037 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 06:25:03,038 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 06:25:03,194 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 06:25:03,243 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 06:25:03,248 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 06:25:03,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:03 BoogieIcfgContainer [2023-08-30 06:25:03,252 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 06:25:03,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 06:25:03,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 06:25:03,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 06:25:03,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 06:25:02" (1/3) ... [2023-08-30 06:25:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab58d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:03, skipping insertion in model container [2023-08-30 06:25:03,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 06:25:02" (2/3) ... [2023-08-30 06:25:03,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ab58d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 06:25:03, skipping insertion in model container [2023-08-30 06:25:03,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 06:25:03" (3/3) ... [2023-08-30 06:25:03,267 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1.wvr.c [2023-08-30 06:25:03,286 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 06:25:03,287 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 06:25:03,287 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 06:25:03,363 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 06:25:03,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 85 transitions, 186 flow [2023-08-30 06:25:03,441 INFO L130 PetriNetUnfolder]: 5/83 cut-off events. [2023-08-30 06:25:03,442 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 06:25:03,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 5/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 81 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-08-30 06:25:03,446 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 85 transitions, 186 flow [2023-08-30 06:25:03,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 79 transitions, 170 flow [2023-08-30 06:25:03,453 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 06:25:03,464 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 79 transitions, 170 flow [2023-08-30 06:25:03,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 79 transitions, 170 flow [2023-08-30 06:25:03,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 79 transitions, 170 flow [2023-08-30 06:25:03,519 INFO L130 PetriNetUnfolder]: 5/79 cut-off events. [2023-08-30 06:25:03,524 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 06:25:03,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 5/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 80 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-08-30 06:25:03,527 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2023-08-30 06:25:05,555 INFO L134 LiptonReduction]: Checked pairs total: 698 [2023-08-30 06:25:05,555 INFO L136 LiptonReduction]: Total number of compositions: 75 [2023-08-30 06:25:05,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 06:25:05,571 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=All, 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;@498cfdfc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 06:25:05,571 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 06:25:05,572 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 06:25:05,572 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 06:25:05,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:05,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 06:25:05,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:05,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:05,577 INFO L85 PathProgramCache]: Analyzing trace with hash 341, now seen corresponding path program 1 times [2023-08-30 06:25:05,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:05,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46589986] [2023-08-30 06:25:05,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:05,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:05,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:05,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:05,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46589986] [2023-08-30 06:25:05,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46589986] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:05,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:05,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 06:25:05,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331489838] [2023-08-30 06:25:05,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:05,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 06:25:05,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:05,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 06:25:05,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 06:25:05,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 160 [2023-08-30 06:25:05,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:05,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:05,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 160 [2023-08-30 06:25:05,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:05,759 INFO L130 PetriNetUnfolder]: 100/163 cut-off events. [2023-08-30 06:25:05,760 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 06:25:05,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338 conditions, 163 events. 100/163 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 504 event pairs, 42 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 264. Up to 160 conditions per place. [2023-08-30 06:25:05,762 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-08-30 06:25:05,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2023-08-30 06:25:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 06:25:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 06:25:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 172 transitions. [2023-08-30 06:25:05,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5375 [2023-08-30 06:25:05,774 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 172 transitions. [2023-08-30 06:25:05,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 172 transitions. [2023-08-30 06:25:05,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:05,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 172 transitions. [2023-08-30 06:25:05,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 86.0) internal successors, (172), 2 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:05,788 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:05,788 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:05,790 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 172 transitions. [2023-08-30 06:25:05,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2023-08-30 06:25:05,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 06:25:05,793 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-08-30 06:25:05,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-30 06:25:05,798 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 06:25:05,799 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-08-30 06:25:05,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 75.5) internal successors, (151), 2 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:05,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:05,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 06:25:05,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 06:25:05,801 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:05,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:05,802 INFO L85 PathProgramCache]: Analyzing trace with hash 336308, now seen corresponding path program 1 times [2023-08-30 06:25:05,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:05,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267677526] [2023-08-30 06:25:05,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:05,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:05,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:05,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:05,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267677526] [2023-08-30 06:25:05,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267677526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:05,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:05,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:25:05,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321538261] [2023-08-30 06:25:05,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:05,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:25:05,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:05,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:25:05,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:25:06,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-30 06:25:06,027 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,027 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-30 06:25:06,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,088 INFO L130 PetriNetUnfolder]: 93/150 cut-off events. [2023-08-30 06:25:06,089 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 06:25:06,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 303 conditions, 150 events. 93/150 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 450 event pairs, 39 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 300. Up to 146 conditions per place. [2023-08-30 06:25:06,092 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-08-30 06:25:06,092 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-08-30 06:25:06,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:25:06,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:25:06,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2023-08-30 06:25:06,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47708333333333336 [2023-08-30 06:25:06,099 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 229 transitions. [2023-08-30 06:25:06,099 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 229 transitions. [2023-08-30 06:25:06,100 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,100 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 229 transitions. [2023-08-30 06:25:06,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 76.33333333333333) internal successors, (229), 3 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,104 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,104 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 229 transitions. [2023-08-30 06:25:06,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-08-30 06:25:06,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 06:25:06,105 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-08-30 06:25:06,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-08-30 06:25:06,106 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-08-30 06:25:06,106 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-08-30 06:25:06,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 3 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 06:25:06,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 06:25:06,108 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,109 INFO L85 PathProgramCache]: Analyzing trace with hash 336307, now seen corresponding path program 1 times [2023-08-30 06:25:06,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210283297] [2023-08-30 06:25:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:06,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:06,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:06,158 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210283297] [2023-08-30 06:25:06,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210283297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:06,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:06,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:25:06,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286506532] [2023-08-30 06:25:06,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:06,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:25:06,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:06,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:25:06,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:25:06,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-08-30 06:25:06,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-08-30 06:25:06,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,216 INFO L130 PetriNetUnfolder]: 86/137 cut-off events. [2023-08-30 06:25:06,216 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 06:25:06,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 137 events. 86/137 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 397 event pairs, 36 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 275. Up to 133 conditions per place. [2023-08-30 06:25:06,217 INFO L137 encePairwiseOnDemand]: 157/160 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 06:25:06,217 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2023-08-30 06:25:06,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:25:06,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:25:06,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 215 transitions. [2023-08-30 06:25:06,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2023-08-30 06:25:06,219 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 215 transitions. [2023-08-30 06:25:06,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 215 transitions. [2023-08-30 06:25:06,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 215 transitions. [2023-08-30 06:25:06,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,222 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,222 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 215 transitions. [2023-08-30 06:25:06,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2023-08-30 06:25:06,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:06,223 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-08-30 06:25:06,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-08-30 06:25:06,224 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 06:25:06,224 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-08-30 06:25:06,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 06:25:06,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 06:25:06,225 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,226 INFO L85 PathProgramCache]: Analyzing trace with hash 323200522, now seen corresponding path program 1 times [2023-08-30 06:25:06,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129089675] [2023-08-30 06:25:06,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:06,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:06,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129089675] [2023-08-30 06:25:06,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129089675] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:06,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:06,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:25:06,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983814036] [2023-08-30 06:25:06,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:06,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:25:06,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:06,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:25:06,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:25:06,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 160 [2023-08-30 06:25:06,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 160 [2023-08-30 06:25:06,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,389 INFO L130 PetriNetUnfolder]: 65/107 cut-off events. [2023-08-30 06:25:06,390 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 06:25:06,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220 conditions, 107 events. 65/107 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 283 event pairs, 27 based on Foata normal form. 0/63 useless extension candidates. Maximal degree in co-relation 216. Up to 103 conditions per place. [2023-08-30 06:25:06,393 INFO L137 encePairwiseOnDemand]: 158/160 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 06:25:06,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2023-08-30 06:25:06,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:25:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:25:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-08-30 06:25:06,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46875 [2023-08-30 06:25:06,395 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-08-30 06:25:06,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-08-30 06:25:06,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-08-30 06:25:06,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,402 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 225 transitions. [2023-08-30 06:25:06,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2023-08-30 06:25:06,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:06,403 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-08-30 06:25:06,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-08-30 06:25:06,405 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 06:25:06,405 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-08-30 06:25:06,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 06:25:06,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 06:25:06,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,407 INFO L85 PathProgramCache]: Analyzing trace with hash 323200521, now seen corresponding path program 1 times [2023-08-30 06:25:06,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369434880] [2023-08-30 06:25:06,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:06,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:06,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:06,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369434880] [2023-08-30 06:25:06,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369434880] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:06,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:06,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 06:25:06,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422887192] [2023-08-30 06:25:06,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:06,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 06:25:06,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:06,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 06:25:06,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 06:25:06,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 160 [2023-08-30 06:25:06,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 160 [2023-08-30 06:25:06,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,581 INFO L130 PetriNetUnfolder]: 44/77 cut-off events. [2023-08-30 06:25:06,582 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 06:25:06,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 77 events. 44/77 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 168 event pairs, 18 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 157. Up to 73 conditions per place. [2023-08-30 06:25:06,582 INFO L137 encePairwiseOnDemand]: 158/160 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 06:25:06,583 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2023-08-30 06:25:06,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:25:06,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:25:06,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 200 transitions. [2023-08-30 06:25:06,584 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-30 06:25:06,584 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 200 transitions. [2023-08-30 06:25:06,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 200 transitions. [2023-08-30 06:25:06,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 200 transitions. [2023-08-30 06:25:06,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,587 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,588 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 200 transitions. [2023-08-30 06:25:06,588 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2023-08-30 06:25:06,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:06,589 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-08-30 06:25:06,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-08-30 06:25:06,592 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-08-30 06:25:06,592 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-08-30 06:25:06,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 4 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:06,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 06:25:06,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1301264347, now seen corresponding path program 1 times [2023-08-30 06:25:06,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280874714] [2023-08-30 06:25:06,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:06,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:06,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280874714] [2023-08-30 06:25:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280874714] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:06,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 06:25:06,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998947384] [2023-08-30 06:25:06,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:06,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 06:25:06,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:06,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 06:25:06,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 06:25:06,705 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 160 [2023-08-30 06:25:06,706 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,706 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,706 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 160 [2023-08-30 06:25:06,706 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,737 INFO L130 PetriNetUnfolder]: 49/94 cut-off events. [2023-08-30 06:25:06,737 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 06:25:06,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 94 events. 49/94 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 273 event pairs, 13 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 194. Up to 65 conditions per place. [2023-08-30 06:25:06,738 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 16 selfloop transitions, 2 changer transitions 4/24 dead transitions. [2023-08-30 06:25:06,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 24 transitions, 104 flow [2023-08-30 06:25:06,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 06:25:06,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 06:25:06,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 06:25:06,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125 [2023-08-30 06:25:06,740 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 06:25:06,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 06:25:06,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 06:25:06,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,743 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,743 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 3 states and 246 transitions. [2023-08-30 06:25:06,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 24 transitions, 104 flow [2023-08-30 06:25:06,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 24 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:06,750 INFO L231 Difference]: Finished difference. Result has 24 places, 16 transitions, 52 flow [2023-08-30 06:25:06,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=24, PETRI_TRANSITIONS=16} [2023-08-30 06:25:06,753 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -5 predicate places. [2023-08-30 06:25:06,753 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 16 transitions, 52 flow [2023-08-30 06:25:06,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:06,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 06:25:06,755 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1071037245, now seen corresponding path program 1 times [2023-08-30 06:25:06,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226123857] [2023-08-30 06:25:06,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:06,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:06,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226123857] [2023-08-30 06:25:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226123857] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:06,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:06,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 06:25:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325902014] [2023-08-30 06:25:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:06,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:25:06,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:06,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:25:06,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:25:06,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-08-30 06:25:06,867 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 16 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,867 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:06,867 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-08-30 06:25:06,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:06,930 INFO L130 PetriNetUnfolder]: 68/137 cut-off events. [2023-08-30 06:25:06,930 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES. [2023-08-30 06:25:06,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 137 events. 68/137 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 423 event pairs, 24 based on Foata normal form. 2/139 useless extension candidates. Maximal degree in co-relation 320. Up to 74 conditions per place. [2023-08-30 06:25:06,933 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 19 selfloop transitions, 4 changer transitions 17/40 dead transitions. [2023-08-30 06:25:06,933 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 40 transitions, 189 flow [2023-08-30 06:25:06,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 06:25:06,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 06:25:06,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 437 transitions. [2023-08-30 06:25:06,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552083333333333 [2023-08-30 06:25:06,935 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 437 transitions. [2023-08-30 06:25:06,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 437 transitions. [2023-08-30 06:25:06,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:06,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 437 transitions. [2023-08-30 06:25:06,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,939 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,939 INFO L175 Difference]: Start difference. First operand has 24 places, 16 transitions, 52 flow. Second operand 6 states and 437 transitions. [2023-08-30 06:25:06,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 40 transitions, 189 flow [2023-08-30 06:25:06,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 40 transitions, 186 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:06,941 INFO L231 Difference]: Finished difference. Result has 31 places, 18 transitions, 79 flow [2023-08-30 06:25:06,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=79, PETRI_PLACES=31, PETRI_TRANSITIONS=18} [2023-08-30 06:25:06,942 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-08-30 06:25:06,943 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 18 transitions, 79 flow [2023-08-30 06:25:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:06,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:06,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:06,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 06:25:06,946 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:06,946 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1300562103, now seen corresponding path program 2 times [2023-08-30 06:25:06,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:06,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576744931] [2023-08-30 06:25:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:06,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:07,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576744931] [2023-08-30 06:25:07,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576744931] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:07,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157828720] [2023-08-30 06:25:07,016 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:25:07,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:07,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:07,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:07,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 06:25:07,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:25:07,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:07,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 06:25:07,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:07,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1157828720] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:07,228 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:07,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-30 06:25:07,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498542038] [2023-08-30 06:25:07,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:07,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 06:25:07,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:07,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 06:25:07,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 06:25:07,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:07,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 18 transitions, 79 flow. Second operand has 8 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:07,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:07,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:07,358 INFO L130 PetriNetUnfolder]: 56/105 cut-off events. [2023-08-30 06:25:07,359 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2023-08-30 06:25:07,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 339 conditions, 105 events. 56/105 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 276 event pairs, 2 based on Foata normal form. 6/111 useless extension candidates. Maximal degree in co-relation 331. Up to 62 conditions per place. [2023-08-30 06:25:07,360 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 28 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2023-08-30 06:25:07,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 194 flow [2023-08-30 06:25:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 06:25:07,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 06:25:07,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-08-30 06:25:07,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475 [2023-08-30 06:25:07,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-08-30 06:25:07,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-08-30 06:25:07,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:07,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-08-30 06:25:07,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,365 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,365 INFO L175 Difference]: Start difference. First operand has 31 places, 18 transitions, 79 flow. Second operand 5 states and 358 transitions. [2023-08-30 06:25:07,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 194 flow [2023-08-30 06:25:07,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 33 transitions, 178 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-30 06:25:07,367 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 95 flow [2023-08-30 06:25:07,367 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=95, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-08-30 06:25:07,368 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-30 06:25:07,368 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 95 flow [2023-08-30 06:25:07,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.75) internal successors, (542), 8 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,369 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:07,369 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:07,376 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-30 06:25:07,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:07,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:07,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:07,576 INFO L85 PathProgramCache]: Analyzing trace with hash -783039221, now seen corresponding path program 3 times [2023-08-30 06:25:07,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:07,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199317460] [2023-08-30 06:25:07,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:07,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:07,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:07,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:07,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199317460] [2023-08-30 06:25:07,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199317460] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:07,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:07,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 06:25:07,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721369740] [2023-08-30 06:25:07,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:07,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:25:07,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:07,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:25:07,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:25:07,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 160 [2023-08-30 06:25:07,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,642 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:07,642 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 160 [2023-08-30 06:25:07,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:07,696 INFO L130 PetriNetUnfolder]: 71/136 cut-off events. [2023-08-30 06:25:07,697 INFO L131 PetriNetUnfolder]: For 140/140 co-relation queries the response was YES. [2023-08-30 06:25:07,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 136 events. 71/136 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 362 event pairs, 21 based on Foata normal form. 2/138 useless extension candidates. Maximal degree in co-relation 459. Up to 75 conditions per place. [2023-08-30 06:25:07,698 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 31 selfloop transitions, 6 changer transitions 2/39 dead transitions. [2023-08-30 06:25:07,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 39 transitions, 250 flow [2023-08-30 06:25:07,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 06:25:07,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 06:25:07,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 368 transitions. [2023-08-30 06:25:07,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46 [2023-08-30 06:25:07,700 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 368 transitions. [2023-08-30 06:25:07,700 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 368 transitions. [2023-08-30 06:25:07,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:07,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 368 transitions. [2023-08-30 06:25:07,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,703 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,703 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 95 flow. Second operand 5 states and 368 transitions. [2023-08-30 06:25:07,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 39 transitions, 250 flow [2023-08-30 06:25:07,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 238 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 06:25:07,706 INFO L231 Difference]: Finished difference. Result has 37 places, 22 transitions, 128 flow [2023-08-30 06:25:07,706 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=37, PETRI_TRANSITIONS=22} [2023-08-30 06:25:07,708 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-08-30 06:25:07,708 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 22 transitions, 128 flow [2023-08-30 06:25:07,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.8) internal successors, (349), 5 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:07,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:07,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 06:25:07,709 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:07,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:07,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1872146037, now seen corresponding path program 4 times [2023-08-30 06:25:07,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:07,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737912322] [2023-08-30 06:25:07,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:07,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:07,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:07,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737912322] [2023-08-30 06:25:07,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737912322] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:07,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082305457] [2023-08-30 06:25:07,764 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:25:07,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:07,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:07,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:07,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 06:25:07,823 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:25:07,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:07,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-30 06:25:07,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:07,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:07,929 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:07,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082305457] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:07,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:07,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-30 06:25:07,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348784903] [2023-08-30 06:25:07,930 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:07,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 06:25:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 06:25:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 06:25:07,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:07,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 22 transitions, 128 flow. Second operand has 10 states, 10 states have (on average 67.9) internal successors, (679), 10 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:07,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:07,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:07,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:08,075 INFO L130 PetriNetUnfolder]: 86/161 cut-off events. [2023-08-30 06:25:08,075 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-08-30 06:25:08,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 161 events. 86/161 cut-off events. For 371/371 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 471 event pairs, 10 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 633. Up to 102 conditions per place. [2023-08-30 06:25:08,077 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 38 selfloop transitions, 9 changer transitions 1/48 dead transitions. [2023-08-30 06:25:08,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 48 transitions, 329 flow [2023-08-30 06:25:08,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 06:25:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 06:25:08,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 567 transitions. [2023-08-30 06:25:08,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44296875 [2023-08-30 06:25:08,079 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 567 transitions. [2023-08-30 06:25:08,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 567 transitions. [2023-08-30 06:25:08,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:08,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 567 transitions. [2023-08-30 06:25:08,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.875) internal successors, (567), 8 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,083 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 160.0) internal successors, (1440), 9 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,083 INFO L175 Difference]: Start difference. First operand has 37 places, 22 transitions, 128 flow. Second operand 8 states and 567 transitions. [2023-08-30 06:25:08,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 48 transitions, 329 flow [2023-08-30 06:25:08,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 48 transitions, 312 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-30 06:25:08,086 INFO L231 Difference]: Finished difference. Result has 43 places, 25 transitions, 162 flow [2023-08-30 06:25:08,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=162, PETRI_PLACES=43, PETRI_TRANSITIONS=25} [2023-08-30 06:25:08,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-08-30 06:25:08,087 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 25 transitions, 162 flow [2023-08-30 06:25:08,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 67.9) internal successors, (679), 10 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:08,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:08,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:08,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-30 06:25:08,293 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:08,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:08,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1361835485, now seen corresponding path program 5 times [2023-08-30 06:25:08,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:08,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234908800] [2023-08-30 06:25:08,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:08,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:08,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234908800] [2023-08-30 06:25:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234908800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:08,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:08,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 06:25:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301995989] [2023-08-30 06:25:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:08,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:25:08,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:25:08,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:25:08,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-08-30 06:25:08,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 25 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:08,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-08-30 06:25:08,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:08,434 INFO L130 PetriNetUnfolder]: 84/159 cut-off events. [2023-08-30 06:25:08,434 INFO L131 PetriNetUnfolder]: For 468/468 co-relation queries the response was YES. [2023-08-30 06:25:08,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 159 events. 84/159 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 435 event pairs, 25 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 657. Up to 87 conditions per place. [2023-08-30 06:25:08,436 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 26 selfloop transitions, 9 changer transitions 2/37 dead transitions. [2023-08-30 06:25:08,436 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 291 flow [2023-08-30 06:25:08,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 06:25:08,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 06:25:08,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 360 transitions. [2023-08-30 06:25:08,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-30 06:25:08,438 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 360 transitions. [2023-08-30 06:25:08,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 360 transitions. [2023-08-30 06:25:08,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:08,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 360 transitions. [2023-08-30 06:25:08,439 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,442 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,442 INFO L175 Difference]: Start difference. First operand has 43 places, 25 transitions, 162 flow. Second operand 5 states and 360 transitions. [2023-08-30 06:25:08,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 291 flow [2023-08-30 06:25:08,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 267 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-08-30 06:25:08,458 INFO L231 Difference]: Finished difference. Result has 45 places, 27 transitions, 190 flow [2023-08-30 06:25:08,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=190, PETRI_PLACES=45, PETRI_TRANSITIONS=27} [2023-08-30 06:25:08,458 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-08-30 06:25:08,459 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 27 transitions, 190 flow [2023-08-30 06:25:08,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:08,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:08,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 06:25:08,460 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:08,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:08,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2073662635, now seen corresponding path program 6 times [2023-08-30 06:25:08,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:08,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106282110] [2023-08-30 06:25:08,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:08,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:08,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:08,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:08,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:08,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106282110] [2023-08-30 06:25:08,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106282110] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 06:25:08,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 06:25:08,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 06:25:08,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180882615] [2023-08-30 06:25:08,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 06:25:08,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:25:08,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:08,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:25:08,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:25:08,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 160 [2023-08-30 06:25:08,527 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 27 transitions, 190 flow. Second operand has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:08,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 160 [2023-08-30 06:25:08,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:08,589 INFO L130 PetriNetUnfolder]: 75/140 cut-off events. [2023-08-30 06:25:08,589 INFO L131 PetriNetUnfolder]: For 547/547 co-relation queries the response was YES. [2023-08-30 06:25:08,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619 conditions, 140 events. 75/140 cut-off events. For 547/547 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 365 event pairs, 21 based on Foata normal form. 6/146 useless extension candidates. Maximal degree in co-relation 603. Up to 87 conditions per place. [2023-08-30 06:25:08,591 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 28 selfloop transitions, 9 changer transitions 1/38 dead transitions. [2023-08-30 06:25:08,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 38 transitions, 306 flow [2023-08-30 06:25:08,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 06:25:08,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 06:25:08,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 362 transitions. [2023-08-30 06:25:08,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525 [2023-08-30 06:25:08,593 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 362 transitions. [2023-08-30 06:25:08,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 362 transitions. [2023-08-30 06:25:08,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:08,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 362 transitions. [2023-08-30 06:25:08,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,596 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,596 INFO L175 Difference]: Start difference. First operand has 45 places, 27 transitions, 190 flow. Second operand 5 states and 362 transitions. [2023-08-30 06:25:08,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 38 transitions, 306 flow [2023-08-30 06:25:08,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 295 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 06:25:08,599 INFO L231 Difference]: Finished difference. Result has 46 places, 26 transitions, 183 flow [2023-08-30 06:25:08,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=46, PETRI_TRANSITIONS=26} [2023-08-30 06:25:08,600 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 17 predicate places. [2023-08-30 06:25:08,600 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 26 transitions, 183 flow [2023-08-30 06:25:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 68.8) internal successors, (344), 5 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:08,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:08,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 06:25:08,601 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:08,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:08,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1642703886, now seen corresponding path program 1 times [2023-08-30 06:25:08,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:08,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052914015] [2023-08-30 06:25:08,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:08,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:08,725 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:08,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052914015] [2023-08-30 06:25:08,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052914015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:08,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107625765] [2023-08-30 06:25:08,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:08,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:08,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:08,729 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:08,754 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 06:25:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:08,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 06:25:08,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:08,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:08,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:08,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107625765] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:08,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:08,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 2 [2023-08-30 06:25:08,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095786506] [2023-08-30 06:25:08,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:08,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 06:25:08,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:08,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 06:25:08,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 06:25:08,862 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 160 [2023-08-30 06:25:08,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 26 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:08,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 160 [2023-08-30 06:25:08,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:08,926 INFO L130 PetriNetUnfolder]: 122/230 cut-off events. [2023-08-30 06:25:08,927 INFO L131 PetriNetUnfolder]: For 736/752 co-relation queries the response was YES. [2023-08-30 06:25:08,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 230 events. 122/230 cut-off events. For 736/752 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 790 event pairs, 16 based on Foata normal form. 19/247 useless extension candidates. Maximal degree in co-relation 955. Up to 113 conditions per place. [2023-08-30 06:25:08,929 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 30 selfloop transitions, 11 changer transitions 4/50 dead transitions. [2023-08-30 06:25:08,929 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 50 transitions, 386 flow [2023-08-30 06:25:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 06:25:08,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 06:25:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-08-30 06:25:08,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5171875 [2023-08-30 06:25:08,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-08-30 06:25:08,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-08-30 06:25:08,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:08,931 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-08-30 06:25:08,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 160.0) internal successors, (800), 5 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,933 INFO L175 Difference]: Start difference. First operand has 46 places, 26 transitions, 183 flow. Second operand 4 states and 331 transitions. [2023-08-30 06:25:08,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 50 transitions, 386 flow [2023-08-30 06:25:08,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 50 transitions, 335 flow, removed 5 selfloop flow, removed 7 redundant places. [2023-08-30 06:25:08,936 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 246 flow [2023-08-30 06:25:08,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=246, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-30 06:25:08,937 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 14 predicate places. [2023-08-30 06:25:08,937 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 246 flow [2023-08-30 06:25:08,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.25) internal successors, (309), 4 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:08,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:08,938 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:08,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:09,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:09,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:09,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:09,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1382879178, now seen corresponding path program 2 times [2023-08-30 06:25:09,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:09,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895750954] [2023-08-30 06:25:09,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:09,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:09,211 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:09,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895750954] [2023-08-30 06:25:09,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895750954] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:09,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310958885] [2023-08-30 06:25:09,212 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:25:09,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:09,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:09,213 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:09,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 06:25:09,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:25:09,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 06:25:09,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:09,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:09,364 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:09,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310958885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:09,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:09,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 06:25:09,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241804230] [2023-08-30 06:25:09,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:09,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 06:25:09,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:09,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 06:25:09,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-08-30 06:25:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:09,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 246 flow. Second operand has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:09,400 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:09,400 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:09,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:09,703 INFO L130 PetriNetUnfolder]: 236/464 cut-off events. [2023-08-30 06:25:09,703 INFO L131 PetriNetUnfolder]: For 1033/1033 co-relation queries the response was YES. [2023-08-30 06:25:09,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1876 conditions, 464 events. 236/464 cut-off events. For 1033/1033 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2004 event pairs, 7 based on Foata normal form. 16/480 useless extension candidates. Maximal degree in co-relation 1862. Up to 157 conditions per place. [2023-08-30 06:25:09,707 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 83 selfloop transitions, 44 changer transitions 6/133 dead transitions. [2023-08-30 06:25:09,707 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 133 transitions, 1055 flow [2023-08-30 06:25:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 06:25:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 06:25:09,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1410 transitions. [2023-08-30 06:25:09,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440625 [2023-08-30 06:25:09,712 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1410 transitions. [2023-08-30 06:25:09,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1410 transitions. [2023-08-30 06:25:09,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:09,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1410 transitions. [2023-08-30 06:25:09,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 70.5) internal successors, (1410), 20 states have internal predecessors, (1410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:09,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:09,721 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:09,721 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 246 flow. Second operand 20 states and 1410 transitions. [2023-08-30 06:25:09,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 133 transitions, 1055 flow [2023-08-30 06:25:09,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 133 transitions, 1021 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-30 06:25:09,726 INFO L231 Difference]: Finished difference. Result has 69 places, 72 transitions, 701 flow [2023-08-30 06:25:09,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=701, PETRI_PLACES=69, PETRI_TRANSITIONS=72} [2023-08-30 06:25:09,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 40 predicate places. [2023-08-30 06:25:09,727 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 72 transitions, 701 flow [2023-08-30 06:25:09,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.08333333333333) internal successors, (805), 12 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:09,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:09,728 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:09,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:09,934 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:09,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:09,935 INFO L85 PathProgramCache]: Analyzing trace with hash 482026770, now seen corresponding path program 3 times [2023-08-30 06:25:09,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:09,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533500312] [2023-08-30 06:25:09,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:09,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:09,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533500312] [2023-08-30 06:25:09,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533500312] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:09,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [354012695] [2023-08-30 06:25:09,998 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:25:09,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:09,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:10,000 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:10,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 06:25:10,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-30 06:25:10,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:10,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 06:25:10,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:10,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:10,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:10,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [354012695] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:10,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:10,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2023-08-30 06:25:10,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540203071] [2023-08-30 06:25:10,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:10,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 06:25:10,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:10,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 06:25:10,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2023-08-30 06:25:10,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:10,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 72 transitions, 701 flow. Second operand has 11 states, 11 states have (on average 67.0909090909091) internal successors, (738), 11 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:10,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:10,186 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:10,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:10,373 INFO L130 PetriNetUnfolder]: 246/505 cut-off events. [2023-08-30 06:25:10,374 INFO L131 PetriNetUnfolder]: For 2030/2030 co-relation queries the response was YES. [2023-08-30 06:25:10,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2452 conditions, 505 events. 246/505 cut-off events. For 2030/2030 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2338 event pairs, 23 based on Foata normal form. 12/517 useless extension candidates. Maximal degree in co-relation 2430. Up to 346 conditions per place. [2023-08-30 06:25:10,378 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 84 selfloop transitions, 19 changer transitions 12/115 dead transitions. [2023-08-30 06:25:10,378 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 115 transitions, 1248 flow [2023-08-30 06:25:10,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 06:25:10,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 06:25:10,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 503 transitions. [2023-08-30 06:25:10,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44910714285714287 [2023-08-30 06:25:10,380 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 503 transitions. [2023-08-30 06:25:10,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 503 transitions. [2023-08-30 06:25:10,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:10,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 503 transitions. [2023-08-30 06:25:10,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 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) [2023-08-30 06:25:10,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:10,384 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:10,384 INFO L175 Difference]: Start difference. First operand has 69 places, 72 transitions, 701 flow. Second operand 7 states and 503 transitions. [2023-08-30 06:25:10,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 115 transitions, 1248 flow [2023-08-30 06:25:10,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 115 transitions, 957 flow, removed 130 selfloop flow, removed 6 redundant places. [2023-08-30 06:25:10,395 INFO L231 Difference]: Finished difference. Result has 73 places, 81 transitions, 665 flow [2023-08-30 06:25:10,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=665, PETRI_PLACES=73, PETRI_TRANSITIONS=81} [2023-08-30 06:25:10,396 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 44 predicate places. [2023-08-30 06:25:10,396 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 81 transitions, 665 flow [2023-08-30 06:25:10,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 67.0909090909091) internal successors, (738), 11 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:10,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:10,397 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:10,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:10,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 06:25:10,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:10,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:10,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1700633170, now seen corresponding path program 4 times [2023-08-30 06:25:10,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:10,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909743323] [2023-08-30 06:25:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:10,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:10,663 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:10,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909743323] [2023-08-30 06:25:10,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909743323] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:10,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374055717] [2023-08-30 06:25:10,664 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:25:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:10,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:10,666 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:10,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 06:25:10,717 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:25:10,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:10,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 06:25:10,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:10,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374055717] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:10,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:10,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-30 06:25:10,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580459260] [2023-08-30 06:25:10,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:10,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-30 06:25:10,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:10,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-30 06:25:10,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-08-30 06:25:10,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:10,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 81 transitions, 665 flow. Second operand has 12 states, 12 states have (on average 67.25) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:10,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:10,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:10,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:11,152 INFO L130 PetriNetUnfolder]: 232/475 cut-off events. [2023-08-30 06:25:11,152 INFO L131 PetriNetUnfolder]: For 1630/1630 co-relation queries the response was YES. [2023-08-30 06:25:11,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2023 conditions, 475 events. 232/475 cut-off events. For 1630/1630 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2221 event pairs, 7 based on Foata normal form. 34/509 useless extension candidates. Maximal degree in co-relation 1998. Up to 204 conditions per place. [2023-08-30 06:25:11,156 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 76 selfloop transitions, 46 changer transitions 7/129 dead transitions. [2023-08-30 06:25:11,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 129 transitions, 1164 flow [2023-08-30 06:25:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 06:25:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 06:25:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 998 transitions. [2023-08-30 06:25:11,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4455357142857143 [2023-08-30 06:25:11,160 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 998 transitions. [2023-08-30 06:25:11,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 998 transitions. [2023-08-30 06:25:11,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:11,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 998 transitions. [2023-08-30 06:25:11,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 71.28571428571429) internal successors, (998), 14 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 160.0) internal successors, (2400), 15 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,167 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 160.0) internal successors, (2400), 15 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,168 INFO L175 Difference]: Start difference. First operand has 73 places, 81 transitions, 665 flow. Second operand 14 states and 998 transitions. [2023-08-30 06:25:11,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 129 transitions, 1164 flow [2023-08-30 06:25:11,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 129 transitions, 1083 flow, removed 35 selfloop flow, removed 5 redundant places. [2023-08-30 06:25:11,182 INFO L231 Difference]: Finished difference. Result has 83 places, 80 transitions, 760 flow [2023-08-30 06:25:11,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=595, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=760, PETRI_PLACES=83, PETRI_TRANSITIONS=80} [2023-08-30 06:25:11,183 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 54 predicate places. [2023-08-30 06:25:11,183 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 80 transitions, 760 flow [2023-08-30 06:25:11,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.25) internal successors, (807), 12 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:11,184 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:11,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:11,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 06:25:11,390 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:11,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:11,390 INFO L85 PathProgramCache]: Analyzing trace with hash 951774190, now seen corresponding path program 5 times [2023-08-30 06:25:11,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:11,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864894865] [2023-08-30 06:25:11,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:11,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:11,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:11,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:11,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864894865] [2023-08-30 06:25:11,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864894865] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:11,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933808916] [2023-08-30 06:25:11,484 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 06:25:11,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:11,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:11,486 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:11,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 06:25:11,556 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 06:25:11,556 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:11,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 06:25:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:11,605 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:11,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:11,642 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:11,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933808916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:11,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:11,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-30 06:25:11,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133487706] [2023-08-30 06:25:11,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:11,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 06:25:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 06:25:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 06:25:11,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:11,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 80 transitions, 760 flow. Second operand has 15 states, 15 states have (on average 66.8) internal successors, (1002), 15 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:11,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:11,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:11,971 INFO L130 PetriNetUnfolder]: 294/606 cut-off events. [2023-08-30 06:25:11,971 INFO L131 PetriNetUnfolder]: For 2189/2189 co-relation queries the response was YES. [2023-08-30 06:25:11,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2657 conditions, 606 events. 294/606 cut-off events. For 2189/2189 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2989 event pairs, 61 based on Foata normal form. 42/648 useless extension candidates. Maximal degree in co-relation 2632. Up to 320 conditions per place. [2023-08-30 06:25:11,976 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 105 selfloop transitions, 47 changer transitions 3/155 dead transitions. [2023-08-30 06:25:11,976 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 155 transitions, 1540 flow [2023-08-30 06:25:11,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 06:25:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 06:25:11,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 936 transitions. [2023-08-30 06:25:11,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-30 06:25:11,980 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 936 transitions. [2023-08-30 06:25:11,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 936 transitions. [2023-08-30 06:25:11,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:11,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 936 transitions. [2023-08-30 06:25:11,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 72.0) internal successors, (936), 13 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,987 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:11,987 INFO L175 Difference]: Start difference. First operand has 83 places, 80 transitions, 760 flow. Second operand 13 states and 936 transitions. [2023-08-30 06:25:11,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 155 transitions, 1540 flow [2023-08-30 06:25:12,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 155 transitions, 1485 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-08-30 06:25:12,007 INFO L231 Difference]: Finished difference. Result has 95 places, 104 transitions, 1168 flow [2023-08-30 06:25:12,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1168, PETRI_PLACES=95, PETRI_TRANSITIONS=104} [2023-08-30 06:25:12,008 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-08-30 06:25:12,008 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 104 transitions, 1168 flow [2023-08-30 06:25:12,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.8) internal successors, (1002), 15 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:12,009 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:12,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:12,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:12,215 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:12,215 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:12,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1636516100, now seen corresponding path program 6 times [2023-08-30 06:25:12,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:12,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819372692] [2023-08-30 06:25:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:12,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:12,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:12,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:12,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819372692] [2023-08-30 06:25:12,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819372692] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:12,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705046360] [2023-08-30 06:25:12,281 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 06:25:12,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:12,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:12,282 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:12,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 06:25:12,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 06:25:12,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:12,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-30 06:25:12,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:12,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:12,406 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:12,435 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:12,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705046360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:12,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:12,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 13 [2023-08-30 06:25:12,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919627383] [2023-08-30 06:25:12,436 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:12,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 06:25:12,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:12,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 06:25:12,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-30 06:25:12,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:12,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 104 transitions, 1168 flow. Second operand has 13 states, 13 states have (on average 66.92307692307692) internal successors, (870), 13 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:12,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:12,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:12,770 INFO L130 PetriNetUnfolder]: 309/631 cut-off events. [2023-08-30 06:25:12,770 INFO L131 PetriNetUnfolder]: For 4208/4208 co-relation queries the response was YES. [2023-08-30 06:25:12,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 631 events. 309/631 cut-off events. For 4208/4208 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3146 event pairs, 28 based on Foata normal form. 6/637 useless extension candidates. Maximal degree in co-relation 3284. Up to 177 conditions per place. [2023-08-30 06:25:12,776 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 85 selfloop transitions, 69 changer transitions 8/162 dead transitions. [2023-08-30 06:25:12,776 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 162 transitions, 1910 flow [2023-08-30 06:25:12,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 06:25:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 06:25:12,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1191 transitions. [2023-08-30 06:25:12,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43786764705882353 [2023-08-30 06:25:12,781 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1191 transitions. [2023-08-30 06:25:12,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1191 transitions. [2023-08-30 06:25:12,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:12,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1191 transitions. [2023-08-30 06:25:12,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.05882352941177) internal successors, (1191), 17 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 160.0) internal successors, (2880), 18 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,791 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 160.0) internal successors, (2880), 18 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,791 INFO L175 Difference]: Start difference. First operand has 95 places, 104 transitions, 1168 flow. Second operand 17 states and 1191 transitions. [2023-08-30 06:25:12,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 162 transitions, 1910 flow [2023-08-30 06:25:12,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 162 transitions, 1678 flow, removed 105 selfloop flow, removed 3 redundant places. [2023-08-30 06:25:12,814 INFO L231 Difference]: Finished difference. Result has 113 places, 117 transitions, 1298 flow [2023-08-30 06:25:12,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1298, PETRI_PLACES=113, PETRI_TRANSITIONS=117} [2023-08-30 06:25:12,815 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 84 predicate places. [2023-08-30 06:25:12,815 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 117 transitions, 1298 flow [2023-08-30 06:25:12,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 66.92307692307692) internal successors, (870), 13 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:12,816 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:12,816 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:12,828 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:13,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 06:25:13,022 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:13,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:13,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1496503897, now seen corresponding path program 7 times [2023-08-30 06:25:13,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:13,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521009713] [2023-08-30 06:25:13,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:13,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:13,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:13,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521009713] [2023-08-30 06:25:13,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521009713] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:13,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120206163] [2023-08-30 06:25:13,122 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 06:25:13,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:13,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:13,123 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:13,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 06:25:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:13,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 06:25:13,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:13,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:13,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120206163] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:13,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:13,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-30 06:25:13,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324503920] [2023-08-30 06:25:13,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:13,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 06:25:13,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:13,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 06:25:13,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 06:25:13,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 160 [2023-08-30 06:25:13,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 117 transitions, 1298 flow. Second operand has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:13,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:13,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 160 [2023-08-30 06:25:13,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:13,465 INFO L130 PetriNetUnfolder]: 525/1068 cut-off events. [2023-08-30 06:25:13,466 INFO L131 PetriNetUnfolder]: For 6888/6898 co-relation queries the response was YES. [2023-08-30 06:25:13,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5779 conditions, 1068 events. 525/1068 cut-off events. For 6888/6898 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6177 event pairs, 57 based on Foata normal form. 30/1096 useless extension candidates. Maximal degree in co-relation 5740. Up to 464 conditions per place. [2023-08-30 06:25:13,475 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 124 selfloop transitions, 58 changer transitions 47/236 dead transitions. [2023-08-30 06:25:13,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 236 transitions, 2952 flow [2023-08-30 06:25:13,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 06:25:13,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 06:25:13,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 416 transitions. [2023-08-30 06:25:13,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-08-30 06:25:13,478 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 416 transitions. [2023-08-30 06:25:13,478 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 416 transitions. [2023-08-30 06:25:13,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:13,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 416 transitions. [2023-08-30 06:25:13,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.2) internal successors, (416), 5 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:13,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:13,482 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:13,482 INFO L175 Difference]: Start difference. First operand has 113 places, 117 transitions, 1298 flow. Second operand 5 states and 416 transitions. [2023-08-30 06:25:13,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 236 transitions, 2952 flow [2023-08-30 06:25:13,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 236 transitions, 2778 flow, removed 68 selfloop flow, removed 3 redundant places. [2023-08-30 06:25:13,509 INFO L231 Difference]: Finished difference. Result has 116 places, 154 transitions, 1954 flow [2023-08-30 06:25:13,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1205, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1954, PETRI_PLACES=116, PETRI_TRANSITIONS=154} [2023-08-30 06:25:13,510 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2023-08-30 06:25:13,510 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 154 transitions, 1954 flow [2023-08-30 06:25:13,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.0) internal successors, (385), 5 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:13,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:13,511 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:13,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:13,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:13,717 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:13,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:13,718 INFO L85 PathProgramCache]: Analyzing trace with hash -2099844861, now seen corresponding path program 8 times [2023-08-30 06:25:13,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:13,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267091800] [2023-08-30 06:25:13,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:13,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:13,801 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:13,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267091800] [2023-08-30 06:25:13,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267091800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:13,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359211759] [2023-08-30 06:25:13,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:25:13,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:13,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:13,804 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:13,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 06:25:13,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:25:13,875 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:13,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:13,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:13,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:13,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:13,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:13,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359211759] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:13,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:13,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 06:25:13,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177587636] [2023-08-30 06:25:13,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:13,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 06:25:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 06:25:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-08-30 06:25:14,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:14,056 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 154 transitions, 1954 flow. Second operand has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:14,056 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:14,057 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:14,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:14,775 INFO L130 PetriNetUnfolder]: 680/1466 cut-off events. [2023-08-30 06:25:14,776 INFO L131 PetriNetUnfolder]: For 12258/12258 co-relation queries the response was YES. [2023-08-30 06:25:14,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8580 conditions, 1466 events. 680/1466 cut-off events. For 12258/12258 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 9521 event pairs, 15 based on Foata normal form. 24/1490 useless extension candidates. Maximal degree in co-relation 8537. Up to 331 conditions per place. [2023-08-30 06:25:14,790 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 152 selfloop transitions, 156 changer transitions 21/329 dead transitions. [2023-08-30 06:25:14,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 329 transitions, 4269 flow [2023-08-30 06:25:14,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 06:25:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 06:25:14,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2319 transitions. [2023-08-30 06:25:14,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43920454545454546 [2023-08-30 06:25:14,794 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2319 transitions. [2023-08-30 06:25:14,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2319 transitions. [2023-08-30 06:25:14,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:14,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2319 transitions. [2023-08-30 06:25:14,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 70.27272727272727) internal successors, (2319), 33 states have internal predecessors, (2319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:14,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 160.0) internal successors, (5440), 34 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:14,819 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 160.0) internal successors, (5440), 34 states have internal predecessors, (5440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:14,819 INFO L175 Difference]: Start difference. First operand has 116 places, 154 transitions, 1954 flow. Second operand 33 states and 2319 transitions. [2023-08-30 06:25:14,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 329 transitions, 4269 flow [2023-08-30 06:25:14,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 329 transitions, 4101 flow, removed 62 selfloop flow, removed 1 redundant places. [2023-08-30 06:25:14,871 INFO L231 Difference]: Finished difference. Result has 160 places, 224 transitions, 3493 flow [2023-08-30 06:25:14,871 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=1874, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=3493, PETRI_PLACES=160, PETRI_TRANSITIONS=224} [2023-08-30 06:25:14,872 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 131 predicate places. [2023-08-30 06:25:14,872 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 224 transitions, 3493 flow [2023-08-30 06:25:14,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:14,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:14,873 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:14,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:15,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:15,079 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:15,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:15,079 INFO L85 PathProgramCache]: Analyzing trace with hash 66051951, now seen corresponding path program 9 times [2023-08-30 06:25:15,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:15,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454322197] [2023-08-30 06:25:15,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:15,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:15,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:15,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454322197] [2023-08-30 06:25:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454322197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:15,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1065498847] [2023-08-30 06:25:15,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:25:15,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:15,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:15,205 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:15,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 06:25:15,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 06:25:15,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:15,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:15,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:15,342 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:15,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:15,391 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:15,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1065498847] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:15,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:15,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 14 [2023-08-30 06:25:15,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748087719] [2023-08-30 06:25:15,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:15,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-30 06:25:15,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:15,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-30 06:25:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-08-30 06:25:15,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:15,440 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 224 transitions, 3493 flow. Second operand has 14 states, 14 states have (on average 66.85714285714286) internal successors, (936), 14 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:15,440 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:15,440 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:15,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:15,893 INFO L130 PetriNetUnfolder]: 767/1617 cut-off events. [2023-08-30 06:25:15,893 INFO L131 PetriNetUnfolder]: For 24032/24032 co-relation queries the response was YES. [2023-08-30 06:25:15,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11160 conditions, 1617 events. 767/1617 cut-off events. For 24032/24032 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 10629 event pairs, 87 based on Foata normal form. 36/1653 useless extension candidates. Maximal degree in co-relation 11104. Up to 1257 conditions per place. [2023-08-30 06:25:15,911 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 239 selfloop transitions, 50 changer transitions 24/313 dead transitions. [2023-08-30 06:25:15,912 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 313 transitions, 5331 flow [2023-08-30 06:25:15,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 06:25:15,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 06:25:15,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 645 transitions. [2023-08-30 06:25:15,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2023-08-30 06:25:15,914 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 645 transitions. [2023-08-30 06:25:15,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 645 transitions. [2023-08-30 06:25:15,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:15,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 645 transitions. [2023-08-30 06:25:15,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 71.66666666666667) internal successors, (645), 9 states have internal predecessors, (645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:15,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:15,917 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 160.0) internal successors, (1600), 10 states have internal predecessors, (1600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:15,917 INFO L175 Difference]: Start difference. First operand has 160 places, 224 transitions, 3493 flow. Second operand 9 states and 645 transitions. [2023-08-30 06:25:15,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 313 transitions, 5331 flow [2023-08-30 06:25:16,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 313 transitions, 4345 flow, removed 418 selfloop flow, removed 12 redundant places. [2023-08-30 06:25:16,098 INFO L231 Difference]: Finished difference. Result has 158 places, 252 transitions, 3406 flow [2023-08-30 06:25:16,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=2793, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3406, PETRI_PLACES=158, PETRI_TRANSITIONS=252} [2023-08-30 06:25:16,099 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 129 predicate places. [2023-08-30 06:25:16,099 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 252 transitions, 3406 flow [2023-08-30 06:25:16,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.85714285714286) internal successors, (936), 14 states have internal predecessors, (936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:16,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:16,100 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:16,106 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 06:25:16,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-30 06:25:16,306 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:16,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:16,307 INFO L85 PathProgramCache]: Analyzing trace with hash 32542007, now seen corresponding path program 10 times [2023-08-30 06:25:16,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:16,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367868218] [2023-08-30 06:25:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:16,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:16,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:16,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367868218] [2023-08-30 06:25:16,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367868218] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:16,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438894689] [2023-08-30 06:25:16,398 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:25:16,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:16,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:16,401 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:16,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 06:25:16,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:25:16,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:16,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:16,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:16,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:16,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:16,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438894689] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:16,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:16,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-08-30 06:25:16,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919937133] [2023-08-30 06:25:16,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:16,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-30 06:25:16,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:16,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-30 06:25:16,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-30 06:25:16,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:16,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 252 transitions, 3406 flow. Second operand has 16 states, 16 states have (on average 67.0625) internal successors, (1073), 16 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:16,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:16,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:16,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:17,306 INFO L130 PetriNetUnfolder]: 934/1910 cut-off events. [2023-08-30 06:25:17,306 INFO L131 PetriNetUnfolder]: For 27060/27060 co-relation queries the response was YES. [2023-08-30 06:25:17,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 1910 events. 934/1910 cut-off events. For 27060/27060 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 12712 event pairs, 93 based on Foata normal form. 78/1988 useless extension candidates. Maximal degree in co-relation 12340. Up to 1501 conditions per place. [2023-08-30 06:25:17,327 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 271 selfloop transitions, 90 changer transitions 3/364 dead transitions. [2023-08-30 06:25:17,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 364 transitions, 5455 flow [2023-08-30 06:25:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-30 06:25:17,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-30 06:25:17,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 996 transitions. [2023-08-30 06:25:17,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446428571428571 [2023-08-30 06:25:17,329 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 996 transitions. [2023-08-30 06:25:17,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 996 transitions. [2023-08-30 06:25:17,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:17,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 996 transitions. [2023-08-30 06:25:17,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 71.14285714285714) internal successors, (996), 14 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:17,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 160.0) internal successors, (2400), 15 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:17,334 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 160.0) internal successors, (2400), 15 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:17,334 INFO L175 Difference]: Start difference. First operand has 158 places, 252 transitions, 3406 flow. Second operand 14 states and 996 transitions. [2023-08-30 06:25:17,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 364 transitions, 5455 flow [2023-08-30 06:25:17,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 364 transitions, 5381 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-08-30 06:25:17,448 INFO L231 Difference]: Finished difference. Result has 172 places, 300 transitions, 4486 flow [2023-08-30 06:25:17,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=3356, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=4486, PETRI_PLACES=172, PETRI_TRANSITIONS=300} [2023-08-30 06:25:17,449 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 143 predicate places. [2023-08-30 06:25:17,449 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 300 transitions, 4486 flow [2023-08-30 06:25:17,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 67.0625) internal successors, (1073), 16 states have internal predecessors, (1073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:17,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:17,450 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:17,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:17,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 06:25:17,655 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:17,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:17,656 INFO L85 PathProgramCache]: Analyzing trace with hash 967265555, now seen corresponding path program 11 times [2023-08-30 06:25:17,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:17,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511321282] [2023-08-30 06:25:17,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:17,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:17,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:17,744 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:17,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511321282] [2023-08-30 06:25:17,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511321282] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:17,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402893460] [2023-08-30 06:25:17,744 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 06:25:17,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:17,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:17,749 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:17,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 06:25:17,821 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 06:25:17,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:17,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:17,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:17,932 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:17,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:17,982 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:17,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402893460] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:17,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:17,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 06:25:17,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295592446] [2023-08-30 06:25:17,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:17,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 06:25:17,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:17,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 06:25:17,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-30 06:25:18,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:18,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 300 transitions, 4486 flow. Second operand has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:18,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:18,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:18,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:18,673 INFO L130 PetriNetUnfolder]: 990/2007 cut-off events. [2023-08-30 06:25:18,673 INFO L131 PetriNetUnfolder]: For 31563/31563 co-relation queries the response was YES. [2023-08-30 06:25:18,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13874 conditions, 2007 events. 990/2007 cut-off events. For 31563/31563 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 13381 event pairs, 73 based on Foata normal form. 56/2063 useless extension candidates. Maximal degree in co-relation 13814. Up to 1323 conditions per place. [2023-08-30 06:25:18,694 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 243 selfloop transitions, 137 changer transitions 4/384 dead transitions. [2023-08-30 06:25:18,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 384 transitions, 6098 flow [2023-08-30 06:25:18,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-30 06:25:18,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-30 06:25:18,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1136 transitions. [2023-08-30 06:25:18,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-08-30 06:25:18,697 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1136 transitions. [2023-08-30 06:25:18,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1136 transitions. [2023-08-30 06:25:18,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:18,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1136 transitions. [2023-08-30 06:25:18,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 71.0) internal successors, (1136), 16 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:18,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:18,702 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 160.0) internal successors, (2720), 17 states have internal predecessors, (2720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:18,702 INFO L175 Difference]: Start difference. First operand has 172 places, 300 transitions, 4486 flow. Second operand 16 states and 1136 transitions. [2023-08-30 06:25:18,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 384 transitions, 6098 flow [2023-08-30 06:25:18,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 384 transitions, 5924 flow, removed 75 selfloop flow, removed 5 redundant places. [2023-08-30 06:25:18,912 INFO L231 Difference]: Finished difference. Result has 185 places, 323 transitions, 5102 flow [2023-08-30 06:25:18,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4288, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=5102, PETRI_PLACES=185, PETRI_TRANSITIONS=323} [2023-08-30 06:25:18,913 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 156 predicate places. [2023-08-30 06:25:18,913 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 323 transitions, 5102 flow [2023-08-30 06:25:18,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:18,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:18,914 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:18,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:19,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-30 06:25:19,120 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:19,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:19,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1635522459, now seen corresponding path program 12 times [2023-08-30 06:25:19,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:19,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106072898] [2023-08-30 06:25:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:19,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:19,198 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:19,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:19,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106072898] [2023-08-30 06:25:19,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106072898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:19,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435316338] [2023-08-30 06:25:19,199 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 06:25:19,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:19,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:19,200 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:19,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 06:25:19,288 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 06:25:19,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:19,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:19,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:19,355 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:19,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435316338] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:19,396 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:19,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-08-30 06:25:19,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51545799] [2023-08-30 06:25:19,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:19,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 06:25:19,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:19,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 06:25:19,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2023-08-30 06:25:19,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:19,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 323 transitions, 5102 flow. Second operand has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:19,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:19,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:19,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:20,116 INFO L130 PetriNetUnfolder]: 964/1955 cut-off events. [2023-08-30 06:25:20,116 INFO L131 PetriNetUnfolder]: For 33927/33927 co-relation queries the response was YES. [2023-08-30 06:25:20,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14102 conditions, 1955 events. 964/1955 cut-off events. For 33927/33927 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 12967 event pairs, 47 based on Foata normal form. 42/1997 useless extension candidates. Maximal degree in co-relation 14040. Up to 592 conditions per place. [2023-08-30 06:25:20,138 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 178 selfloop transitions, 213 changer transitions 0/391 dead transitions. [2023-08-30 06:25:20,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 391 transitions, 6381 flow [2023-08-30 06:25:20,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 06:25:20,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 06:25:20,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1558 transitions. [2023-08-30 06:25:20,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4426136363636364 [2023-08-30 06:25:20,143 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1558 transitions. [2023-08-30 06:25:20,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1558 transitions. [2023-08-30 06:25:20,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:20,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1558 transitions. [2023-08-30 06:25:20,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 70.81818181818181) internal successors, (1558), 22 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:20,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 160.0) internal successors, (3680), 23 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:20,151 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 160.0) internal successors, (3680), 23 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:20,151 INFO L175 Difference]: Start difference. First operand has 185 places, 323 transitions, 5102 flow. Second operand 22 states and 1558 transitions. [2023-08-30 06:25:20,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 391 transitions, 6381 flow [2023-08-30 06:25:20,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 391 transitions, 6119 flow, removed 49 selfloop flow, removed 13 redundant places. [2023-08-30 06:25:20,309 INFO L231 Difference]: Finished difference. Result has 194 places, 321 transitions, 5436 flow [2023-08-30 06:25:20,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=4769, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=207, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=5436, PETRI_PLACES=194, PETRI_TRANSITIONS=321} [2023-08-30 06:25:20,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 165 predicate places. [2023-08-30 06:25:20,309 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 321 transitions, 5436 flow [2023-08-30 06:25:20,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:20,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:20,310 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:20,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:20,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:20,516 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:20,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:20,516 INFO L85 PathProgramCache]: Analyzing trace with hash -686477479, now seen corresponding path program 13 times [2023-08-30 06:25:20,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:20,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052824846] [2023-08-30 06:25:20,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:20,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052824846] [2023-08-30 06:25:20,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052824846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:20,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726704410] [2023-08-30 06:25:20,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 06:25:20,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:20,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:20,609 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:20,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 06:25:20,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:20,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:20,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:20,752 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:20,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:20,808 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:20,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726704410] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:20,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:20,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-08-30 06:25:20,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877067266] [2023-08-30 06:25:20,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:20,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 06:25:20,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:20,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 06:25:20,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-08-30 06:25:20,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:20,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 321 transitions, 5436 flow. Second operand has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:20,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:20,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:20,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:21,851 INFO L130 PetriNetUnfolder]: 1416/2787 cut-off events. [2023-08-30 06:25:21,851 INFO L131 PetriNetUnfolder]: For 50938/50938 co-relation queries the response was YES. [2023-08-30 06:25:21,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21301 conditions, 2787 events. 1416/2787 cut-off events. For 50938/50938 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 19407 event pairs, 81 based on Foata normal form. 28/2815 useless extension candidates. Maximal degree in co-relation 21238. Up to 1700 conditions per place. [2023-08-30 06:25:21,871 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 330 selfloop transitions, 230 changer transitions 3/563 dead transitions. [2023-08-30 06:25:21,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 563 transitions, 10305 flow [2023-08-30 06:25:21,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 06:25:21,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 06:25:21,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1424 transitions. [2023-08-30 06:25:21,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.445 [2023-08-30 06:25:21,877 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1424 transitions. [2023-08-30 06:25:21,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1424 transitions. [2023-08-30 06:25:21,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:21,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1424 transitions. [2023-08-30 06:25:21,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 71.2) internal successors, (1424), 20 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:21,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:21,883 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:21,883 INFO L175 Difference]: Start difference. First operand has 194 places, 321 transitions, 5436 flow. Second operand 20 states and 1424 transitions. [2023-08-30 06:25:21,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 563 transitions, 10305 flow [2023-08-30 06:25:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 563 transitions, 9813 flow, removed 56 selfloop flow, removed 17 redundant places. [2023-08-30 06:25:22,146 INFO L231 Difference]: Finished difference. Result has 207 places, 470 transitions, 8858 flow [2023-08-30 06:25:22,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=5145, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=8858, PETRI_PLACES=207, PETRI_TRANSITIONS=470} [2023-08-30 06:25:22,146 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 178 predicate places. [2023-08-30 06:25:22,146 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 470 transitions, 8858 flow [2023-08-30 06:25:22,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 67.0) internal successors, (1206), 18 states have internal predecessors, (1206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:22,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:22,147 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:22,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:22,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:22,347 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:22,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:22,348 INFO L85 PathProgramCache]: Analyzing trace with hash -259973973, now seen corresponding path program 14 times [2023-08-30 06:25:22,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:22,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399292668] [2023-08-30 06:25:22,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:22,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:22,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399292668] [2023-08-30 06:25:22,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399292668] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:22,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675984926] [2023-08-30 06:25:22,425 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:25:22,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:22,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:22,427 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:22,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 06:25:22,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:25:22,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:22,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:22,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:22,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:22,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:22,595 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:22,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675984926] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:22,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:22,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-08-30 06:25:22,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049776277] [2023-08-30 06:25:22,596 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:22,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 06:25:22,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:22,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 06:25:22,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-08-30 06:25:22,636 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:22,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 470 transitions, 8858 flow. Second operand has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:22,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:22,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:22,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:23,707 INFO L130 PetriNetUnfolder]: 1764/3484 cut-off events. [2023-08-30 06:25:23,707 INFO L131 PetriNetUnfolder]: For 77995/77995 co-relation queries the response was YES. [2023-08-30 06:25:23,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28534 conditions, 3484 events. 1764/3484 cut-off events. For 77995/77995 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 25301 event pairs, 79 based on Foata normal form. 74/3558 useless extension candidates. Maximal degree in co-relation 28460. Up to 1259 conditions per place. [2023-08-30 06:25:23,744 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 262 selfloop transitions, 409 changer transitions 8/679 dead transitions. [2023-08-30 06:25:23,744 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 679 transitions, 13326 flow [2023-08-30 06:25:23,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 06:25:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 06:25:23,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1491 transitions. [2023-08-30 06:25:23,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44375 [2023-08-30 06:25:23,747 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1491 transitions. [2023-08-30 06:25:23,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1491 transitions. [2023-08-30 06:25:23,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:23,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1491 transitions. [2023-08-30 06:25:23,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 71.0) internal successors, (1491), 21 states have internal predecessors, (1491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:23,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:23,754 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:23,754 INFO L175 Difference]: Start difference. First operand has 207 places, 470 transitions, 8858 flow. Second operand 21 states and 1491 transitions. [2023-08-30 06:25:23,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 679 transitions, 13326 flow [2023-08-30 06:25:24,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 679 transitions, 12816 flow, removed 239 selfloop flow, removed 4 redundant places. [2023-08-30 06:25:24,288 INFO L231 Difference]: Finished difference. Result has 231 places, 586 transitions, 12089 flow [2023-08-30 06:25:24,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=8418, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=12089, PETRI_PLACES=231, PETRI_TRANSITIONS=586} [2023-08-30 06:25:24,289 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 202 predicate places. [2023-08-30 06:25:24,289 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 586 transitions, 12089 flow [2023-08-30 06:25:24,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:24,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:24,289 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:24,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:24,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 06:25:24,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:24,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:24,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1177898229, now seen corresponding path program 15 times [2023-08-30 06:25:24,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:24,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707106374] [2023-08-30 06:25:24,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:24,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:24,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707106374] [2023-08-30 06:25:24,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707106374] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:24,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262389505] [2023-08-30 06:25:24,616 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:25:24,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:24,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:24,618 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:24,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 06:25:24,687 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 06:25:24,687 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:24,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:24,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:24,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262389505] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:24,789 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:24,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-08-30 06:25:24,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003618248] [2023-08-30 06:25:24,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:24,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 06:25:24,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 06:25:24,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2023-08-30 06:25:24,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:24,842 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 586 transitions, 12089 flow. Second operand has 20 states, 20 states have (on average 66.55) internal successors, (1331), 20 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:24,842 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:24,842 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:24,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:26,038 INFO L130 PetriNetUnfolder]: 1871/3689 cut-off events. [2023-08-30 06:25:26,038 INFO L131 PetriNetUnfolder]: For 109462/109462 co-relation queries the response was YES. [2023-08-30 06:25:26,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32414 conditions, 3689 events. 1871/3689 cut-off events. For 109462/109462 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 26890 event pairs, 580 based on Foata normal form. 104/3793 useless extension candidates. Maximal degree in co-relation 32332. Up to 2909 conditions per place. [2023-08-30 06:25:26,069 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 579 selfloop transitions, 133 changer transitions 14/726 dead transitions. [2023-08-30 06:25:26,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 726 transitions, 15439 flow [2023-08-30 06:25:26,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-30 06:25:26,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-30 06:25:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1506 transitions. [2023-08-30 06:25:26,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44821428571428573 [2023-08-30 06:25:26,072 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1506 transitions. [2023-08-30 06:25:26,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1506 transitions. [2023-08-30 06:25:26,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:26,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1506 transitions. [2023-08-30 06:25:26,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 71.71428571428571) internal successors, (1506), 21 states have internal predecessors, (1506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:26,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:26,078 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 160.0) internal successors, (3520), 22 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:26,078 INFO L175 Difference]: Start difference. First operand has 231 places, 586 transitions, 12089 flow. Second operand 21 states and 1506 transitions. [2023-08-30 06:25:26,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 726 transitions, 15439 flow [2023-08-30 06:25:26,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 726 transitions, 15010 flow, removed 191 selfloop flow, removed 8 redundant places. [2023-08-30 06:25:26,783 INFO L231 Difference]: Finished difference. Result has 253 places, 637 transitions, 13470 flow [2023-08-30 06:25:26,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=11660, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=13470, PETRI_PLACES=253, PETRI_TRANSITIONS=637} [2023-08-30 06:25:26,784 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 224 predicate places. [2023-08-30 06:25:26,784 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 637 transitions, 13470 flow [2023-08-30 06:25:26,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 66.55) internal successors, (1331), 20 states have internal predecessors, (1331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:26,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:26,785 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:26,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:26,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 06:25:26,991 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:26,991 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:26,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2003266877, now seen corresponding path program 16 times [2023-08-30 06:25:26,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:26,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597765750] [2023-08-30 06:25:26,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:26,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:27,076 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:27,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:27,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597765750] [2023-08-30 06:25:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597765750] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:27,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376953797] [2023-08-30 06:25:27,077 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:25:27,077 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:27,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:27,081 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:27,084 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 06:25:27,138 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:25:27,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:27,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 06:25:27,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:27,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376953797] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:27,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:27,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2023-08-30 06:25:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358237571] [2023-08-30 06:25:27,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:27,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 06:25:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 06:25:27,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2023-08-30 06:25:27,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:27,305 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 637 transitions, 13470 flow. Second operand has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:27,305 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:27,305 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:27,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:28,580 INFO L130 PetriNetUnfolder]: 1906/3740 cut-off events. [2023-08-30 06:25:28,580 INFO L131 PetriNetUnfolder]: For 113783/113783 co-relation queries the response was YES. [2023-08-30 06:25:28,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33566 conditions, 3740 events. 1906/3740 cut-off events. For 113783/113783 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 27259 event pairs, 212 based on Foata normal form. 6/3746 useless extension candidates. Maximal degree in co-relation 33474. Up to 1224 conditions per place. [2023-08-30 06:25:28,619 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 395 selfloop transitions, 329 changer transitions 11/735 dead transitions. [2023-08-30 06:25:28,619 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 735 transitions, 16108 flow [2023-08-30 06:25:28,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 06:25:28,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 06:25:28,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1811 transitions. [2023-08-30 06:25:28,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43533653846153847 [2023-08-30 06:25:28,622 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1811 transitions. [2023-08-30 06:25:28,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1811 transitions. [2023-08-30 06:25:28,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:28,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1811 transitions. [2023-08-30 06:25:28,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 69.65384615384616) internal successors, (1811), 26 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:28,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:28,633 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:28,633 INFO L175 Difference]: Start difference. First operand has 253 places, 637 transitions, 13470 flow. Second operand 26 states and 1811 transitions. [2023-08-30 06:25:28,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 735 transitions, 16108 flow [2023-08-30 06:25:29,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 735 transitions, 14845 flow, removed 627 selfloop flow, removed 3 redundant places. [2023-08-30 06:25:29,493 INFO L231 Difference]: Finished difference. Result has 279 places, 670 transitions, 13676 flow [2023-08-30 06:25:29,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=12443, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=637, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=297, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=13676, PETRI_PLACES=279, PETRI_TRANSITIONS=670} [2023-08-30 06:25:29,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2023-08-30 06:25:29,495 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 670 transitions, 13676 flow [2023-08-30 06:25:29,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.76470588235294) internal successors, (1135), 17 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:29,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:29,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:29,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:29,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-08-30 06:25:29,700 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:29,700 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:29,701 INFO L85 PathProgramCache]: Analyzing trace with hash -182673958, now seen corresponding path program 17 times [2023-08-30 06:25:29,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:29,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217454671] [2023-08-30 06:25:29,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:29,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:29,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:29,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217454671] [2023-08-30 06:25:29,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217454671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:29,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194046493] [2023-08-30 06:25:29,819 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 06:25:29,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:29,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:29,821 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:29,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 06:25:29,898 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 06:25:29,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:29,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-30 06:25:29,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:29,933 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:29,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:25:29,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194046493] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:29,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:29,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-30 06:25:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45511784] [2023-08-30 06:25:29,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:29,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 06:25:29,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 06:25:29,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 06:25:29,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 160 [2023-08-30 06:25:29,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 670 transitions, 13676 flow. Second operand has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:29,978 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:29,978 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 160 [2023-08-30 06:25:29,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:31,588 INFO L130 PetriNetUnfolder]: 2836/5514 cut-off events. [2023-08-30 06:25:31,588 INFO L131 PetriNetUnfolder]: For 152567/152577 co-relation queries the response was YES. [2023-08-30 06:25:31,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48664 conditions, 5514 events. 2836/5514 cut-off events. For 152567/152577 co-relation queries the response was YES. Maximal size of possible extension queue 472. Compared 43032 event pairs, 223 based on Foata normal form. 35/5547 useless extension candidates. Maximal degree in co-relation 48567. Up to 2893 conditions per place. [2023-08-30 06:25:31,650 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 606 selfloop transitions, 362 changer transitions 122/1098 dead transitions. [2023-08-30 06:25:31,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 1098 transitions, 23773 flow [2023-08-30 06:25:31,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 06:25:31,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 06:25:31,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 501 transitions. [2023-08-30 06:25:31,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521875 [2023-08-30 06:25:31,652 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 501 transitions. [2023-08-30 06:25:31,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 501 transitions. [2023-08-30 06:25:31,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:31,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 501 transitions. [2023-08-30 06:25:31,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 83.5) internal successors, (501), 6 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:31,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:31,656 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 160.0) internal successors, (1120), 7 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:31,656 INFO L175 Difference]: Start difference. First operand has 279 places, 670 transitions, 13676 flow. Second operand 6 states and 501 transitions. [2023-08-30 06:25:31,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 1098 transitions, 23773 flow [2023-08-30 06:25:32,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 1098 transitions, 23229 flow, removed 222 selfloop flow, removed 8 redundant places. [2023-08-30 06:25:32,753 INFO L231 Difference]: Finished difference. Result has 279 places, 894 transitions, 19650 flow [2023-08-30 06:25:32,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=13397, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=19650, PETRI_PLACES=279, PETRI_TRANSITIONS=894} [2023-08-30 06:25:32,754 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 250 predicate places. [2023-08-30 06:25:32,754 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 894 transitions, 19650 flow [2023-08-30 06:25:32,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.83333333333333) internal successors, (461), 6 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:32,754 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:32,754 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:32,759 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:32,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 06:25:32,958 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:32,959 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:32,959 INFO L85 PathProgramCache]: Analyzing trace with hash -326188162, now seen corresponding path program 18 times [2023-08-30 06:25:32,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:32,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376487343] [2023-08-30 06:25:32,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:32,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:33,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:33,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376487343] [2023-08-30 06:25:33,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376487343] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:33,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585579771] [2023-08-30 06:25:33,074 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 06:25:33,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:33,077 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:33,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 06:25:33,163 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 06:25:33,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:33,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:25:33,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:33,239 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:33,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:33,307 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:33,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585579771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:33,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:33,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 17 [2023-08-30 06:25:33,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597223385] [2023-08-30 06:25:33,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:33,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 06:25:33,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:33,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 06:25:33,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-08-30 06:25:33,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:33,418 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 894 transitions, 19650 flow. Second operand has 17 states, 17 states have (on average 66.70588235294117) internal successors, (1134), 17 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:33,419 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:33,419 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:33,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:35,697 INFO L130 PetriNetUnfolder]: 3201/6269 cut-off events. [2023-08-30 06:25:35,698 INFO L131 PetriNetUnfolder]: For 200231/200231 co-relation queries the response was YES. [2023-08-30 06:25:35,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59168 conditions, 6269 events. 3201/6269 cut-off events. For 200231/200231 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 50045 event pairs, 245 based on Foata normal form. 40/6309 useless extension candidates. Maximal degree in co-relation 59067. Up to 4851 conditions per place. [2023-08-30 06:25:35,769 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 921 selfloop transitions, 221 changer transitions 51/1193 dead transitions. [2023-08-30 06:25:35,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 1193 transitions, 28293 flow [2023-08-30 06:25:35,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 06:25:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 06:25:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 792 transitions. [2023-08-30 06:25:35,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45 [2023-08-30 06:25:35,771 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 792 transitions. [2023-08-30 06:25:35,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 792 transitions. [2023-08-30 06:25:35,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:35,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 792 transitions. [2023-08-30 06:25:35,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 72.0) internal successors, (792), 11 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:35,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:35,775 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 160.0) internal successors, (1920), 12 states have internal predecessors, (1920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:35,775 INFO L175 Difference]: Start difference. First operand has 279 places, 894 transitions, 19650 flow. Second operand 11 states and 792 transitions. [2023-08-30 06:25:35,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 1193 transitions, 28293 flow [2023-08-30 06:25:37,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 1193 transitions, 27769 flow, removed 262 selfloop flow, removed 0 redundant places. [2023-08-30 06:25:37,399 INFO L231 Difference]: Finished difference. Result has 295 places, 1048 transitions, 24336 flow [2023-08-30 06:25:37,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=19186, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=894, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=673, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=24336, PETRI_PLACES=295, PETRI_TRANSITIONS=1048} [2023-08-30 06:25:37,401 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 266 predicate places. [2023-08-30 06:25:37,401 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1048 transitions, 24336 flow [2023-08-30 06:25:37,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.70588235294117) internal successors, (1134), 17 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:37,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:37,401 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:37,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:37,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:37,612 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:37,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:37,613 INFO L85 PathProgramCache]: Analyzing trace with hash 35311922, now seen corresponding path program 19 times [2023-08-30 06:25:37,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:37,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799916850] [2023-08-30 06:25:37,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:37,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:37,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:37,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:37,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799916850] [2023-08-30 06:25:37,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799916850] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:37,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521218438] [2023-08-30 06:25:37,719 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 06:25:37,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:37,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:37,720 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:37,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 06:25:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:37,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:25:37,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:37,886 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:37,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:37,945 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:37,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521218438] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:37,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:37,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2023-08-30 06:25:37,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046961735] [2023-08-30 06:25:37,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:37,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 06:25:37,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 06:25:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-08-30 06:25:38,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:38,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1048 transitions, 24336 flow. Second operand has 19 states, 19 states have (on average 66.63157894736842) internal successors, (1266), 19 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:38,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:38,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:38,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:40,860 INFO L130 PetriNetUnfolder]: 3553/6923 cut-off events. [2023-08-30 06:25:40,860 INFO L131 PetriNetUnfolder]: For 236573/236573 co-relation queries the response was YES. [2023-08-30 06:25:40,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66507 conditions, 6923 events. 3553/6923 cut-off events. For 236573/236573 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 55686 event pairs, 247 based on Foata normal form. 60/6983 useless extension candidates. Maximal degree in co-relation 66399. Up to 5236 conditions per place. [2023-08-30 06:25:40,936 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 961 selfloop transitions, 303 changer transitions 17/1281 dead transitions. [2023-08-30 06:25:40,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 1281 transitions, 31252 flow [2023-08-30 06:25:40,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 06:25:40,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 06:25:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1212 transitions. [2023-08-30 06:25:40,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4455882352941177 [2023-08-30 06:25:40,938 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1212 transitions. [2023-08-30 06:25:40,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1212 transitions. [2023-08-30 06:25:40,939 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:40,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1212 transitions. [2023-08-30 06:25:40,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 71.29411764705883) internal successors, (1212), 17 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:40,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 160.0) internal successors, (2880), 18 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:40,943 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 160.0) internal successors, (2880), 18 states have internal predecessors, (2880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:40,943 INFO L175 Difference]: Start difference. First operand has 295 places, 1048 transitions, 24336 flow. Second operand 17 states and 1212 transitions. [2023-08-30 06:25:40,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 1281 transitions, 31252 flow [2023-08-30 06:25:43,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 1281 transitions, 31023 flow, removed 86 selfloop flow, removed 5 redundant places. [2023-08-30 06:25:43,170 INFO L231 Difference]: Finished difference. Result has 312 places, 1148 transitions, 27748 flow [2023-08-30 06:25:43,171 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=24167, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1048, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=765, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=27748, PETRI_PLACES=312, PETRI_TRANSITIONS=1148} [2023-08-30 06:25:43,171 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 283 predicate places. [2023-08-30 06:25:43,171 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 1148 transitions, 27748 flow [2023-08-30 06:25:43,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 66.63157894736842) internal successors, (1266), 19 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:43,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:43,172 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:43,176 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:43,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:43,372 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:43,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:43,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1037126212, now seen corresponding path program 20 times [2023-08-30 06:25:43,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:43,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870027882] [2023-08-30 06:25:43,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:43,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:43,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:43,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:43,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870027882] [2023-08-30 06:25:43,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870027882] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:43,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994541966] [2023-08-30 06:25:43,476 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:25:43,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:43,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:43,481 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:43,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 06:25:43,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:25:43,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:43,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:25:43,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:43,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:43,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994541966] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:43,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:43,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2023-08-30 06:25:43,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871360216] [2023-08-30 06:25:43,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:43,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 06:25:43,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:43,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 06:25:43,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2023-08-30 06:25:43,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:43,748 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 1148 transitions, 27748 flow. Second operand has 18 states, 18 states have (on average 66.66666666666667) internal successors, (1200), 18 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:43,748 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:43,748 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:43,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:47,488 INFO L130 PetriNetUnfolder]: 4006/7871 cut-off events. [2023-08-30 06:25:47,489 INFO L131 PetriNetUnfolder]: For 321357/321357 co-relation queries the response was YES. [2023-08-30 06:25:47,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79018 conditions, 7871 events. 4006/7871 cut-off events. For 321357/321357 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 65444 event pairs, 119 based on Foata normal form. 104/7975 useless extension candidates. Maximal degree in co-relation 78905. Up to 2186 conditions per place. [2023-08-30 06:25:47,575 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 465 selfloop transitions, 973 changer transitions 42/1480 dead transitions. [2023-08-30 06:25:47,575 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1480 transitions, 36626 flow [2023-08-30 06:25:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-30 06:25:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-30 06:25:47,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 2501 transitions. [2023-08-30 06:25:47,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44660714285714287 [2023-08-30 06:25:47,579 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 2501 transitions. [2023-08-30 06:25:47,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 2501 transitions. [2023-08-30 06:25:47,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:47,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 2501 transitions. [2023-08-30 06:25:47,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 71.45714285714286) internal successors, (2501), 35 states have internal predecessors, (2501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:47,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:47,587 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 160.0) internal successors, (5760), 36 states have internal predecessors, (5760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:47,587 INFO L175 Difference]: Start difference. First operand has 312 places, 1148 transitions, 27748 flow. Second operand 35 states and 2501 transitions. [2023-08-30 06:25:47,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1480 transitions, 36626 flow [2023-08-30 06:25:50,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 1480 transitions, 36122 flow, removed 226 selfloop flow, removed 5 redundant places. [2023-08-30 06:25:50,629 INFO L231 Difference]: Finished difference. Result has 351 places, 1277 transitions, 34045 flow [2023-08-30 06:25:50,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=27338, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=856, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=34045, PETRI_PLACES=351, PETRI_TRANSITIONS=1277} [2023-08-30 06:25:50,631 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 322 predicate places. [2023-08-30 06:25:50,631 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 1277 transitions, 34045 flow [2023-08-30 06:25:50,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.66666666666667) internal successors, (1200), 18 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:50,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:50,634 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:50,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:50,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:50,839 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:50,839 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1896595388, now seen corresponding path program 21 times [2023-08-30 06:25:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:50,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407471171] [2023-08-30 06:25:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:50,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407471171] [2023-08-30 06:25:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407471171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [316292062] [2023-08-30 06:25:50,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:25:50,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:50,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:50,933 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:50,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 06:25:51,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 06:25:51,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:51,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:25:51,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:51,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:51,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [316292062] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:51,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:51,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2023-08-30 06:25:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743013714] [2023-08-30 06:25:51,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:51,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 06:25:51,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:51,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 06:25:51,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2023-08-30 06:25:51,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:51,175 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 1277 transitions, 34045 flow. Second operand has 18 states, 18 states have (on average 66.66666666666667) internal successors, (1200), 18 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:51,175 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:51,175 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:51,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:25:55,071 INFO L130 PetriNetUnfolder]: 3973/7770 cut-off events. [2023-08-30 06:25:55,071 INFO L131 PetriNetUnfolder]: For 352832/352832 co-relation queries the response was YES. [2023-08-30 06:25:55,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83662 conditions, 7770 events. 3973/7770 cut-off events. For 352832/352832 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 64172 event pairs, 55 based on Foata normal form. 16/7786 useless extension candidates. Maximal degree in co-relation 83539. Up to 2194 conditions per place. [2023-08-30 06:25:55,163 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 311 selfloop transitions, 1114 changer transitions 45/1470 dead transitions. [2023-08-30 06:25:55,164 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 1470 transitions, 39435 flow [2023-08-30 06:25:55,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-08-30 06:25:55,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2023-08-30 06:25:55,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 3207 transitions. [2023-08-30 06:25:55,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357336956521739 [2023-08-30 06:25:55,167 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 3207 transitions. [2023-08-30 06:25:55,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 3207 transitions. [2023-08-30 06:25:55,169 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:25:55,169 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 3207 transitions. [2023-08-30 06:25:55,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 69.71739130434783) internal successors, (3207), 46 states have internal predecessors, (3207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:55,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 160.0) internal successors, (7520), 47 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:55,178 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 160.0) internal successors, (7520), 47 states have internal predecessors, (7520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:55,178 INFO L175 Difference]: Start difference. First operand has 351 places, 1277 transitions, 34045 flow. Second operand 46 states and 3207 transitions. [2023-08-30 06:25:55,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 1470 transitions, 39435 flow [2023-08-30 06:25:59,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 1470 transitions, 36683 flow, removed 930 selfloop flow, removed 20 redundant places. [2023-08-30 06:25:59,324 INFO L231 Difference]: Finished difference. Result has 377 places, 1323 transitions, 34582 flow [2023-08-30 06:25:59,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=31305, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1072, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=34582, PETRI_PLACES=377, PETRI_TRANSITIONS=1323} [2023-08-30 06:25:59,326 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 348 predicate places. [2023-08-30 06:25:59,326 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 1323 transitions, 34582 flow [2023-08-30 06:25:59,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.66666666666667) internal successors, (1200), 18 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:59,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:25:59,327 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:25:59,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 06:25:59,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:59,532 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:25:59,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:25:59,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2015461100, now seen corresponding path program 22 times [2023-08-30 06:25:59,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:25:59,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680300265] [2023-08-30 06:25:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:25:59,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:25:59,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:25:59,634 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:25:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680300265] [2023-08-30 06:25:59,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680300265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:25:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016047595] [2023-08-30 06:25:59,635 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:25:59,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:25:59,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:25:59,637 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:25:59,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 06:25:59,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:25:59,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:25:59,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:25:59,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:25:59,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:59,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:25:59,889 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:25:59,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016047595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:25:59,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:25:59,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 10] total 18 [2023-08-30 06:25:59,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323730700] [2023-08-30 06:25:59,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:25:59,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 06:25:59,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:25:59,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 06:25:59,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2023-08-30 06:25:59,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:25:59,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 1323 transitions, 34582 flow. Second operand has 18 states, 18 states have (on average 66.88888888888889) internal successors, (1204), 18 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:25:59,953 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:25:59,953 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:25:59,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:26:04,667 INFO L130 PetriNetUnfolder]: 4482/8635 cut-off events. [2023-08-30 06:26:04,667 INFO L131 PetriNetUnfolder]: For 413302/413302 co-relation queries the response was YES. [2023-08-30 06:26:04,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92034 conditions, 8635 events. 4482/8635 cut-off events. For 413302/413302 co-relation queries the response was YES. Maximal size of possible extension queue 725. Compared 71963 event pairs, 113 based on Foata normal form. 238/8873 useless extension candidates. Maximal degree in co-relation 91916. Up to 2506 conditions per place. [2023-08-30 06:26:04,749 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 559 selfloop transitions, 1088 changer transitions 27/1674 dead transitions. [2023-08-30 06:26:04,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 1674 transitions, 45643 flow [2023-08-30 06:26:04,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-08-30 06:26:04,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-08-30 06:26:04,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1909 transitions. [2023-08-30 06:26:04,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44189814814814815 [2023-08-30 06:26:04,751 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1909 transitions. [2023-08-30 06:26:04,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1909 transitions. [2023-08-30 06:26:04,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:26:04,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1909 transitions. [2023-08-30 06:26:04,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 70.70370370370371) internal successors, (1909), 27 states have internal predecessors, (1909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:04,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 160.0) internal successors, (4480), 28 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:04,757 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 160.0) internal successors, (4480), 28 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:04,757 INFO L175 Difference]: Start difference. First operand has 377 places, 1323 transitions, 34582 flow. Second operand 27 states and 1909 transitions. [2023-08-30 06:26:04,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 1674 transitions, 45643 flow [2023-08-30 06:26:09,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 1674 transitions, 42995 flow, removed 815 selfloop flow, removed 17 redundant places. [2023-08-30 06:26:09,551 INFO L231 Difference]: Finished difference. Result has 386 places, 1503 transitions, 41124 flow [2023-08-30 06:26:09,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=32753, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=903, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=388, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=41124, PETRI_PLACES=386, PETRI_TRANSITIONS=1503} [2023-08-30 06:26:09,552 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 357 predicate places. [2023-08-30 06:26:09,553 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 1503 transitions, 41124 flow [2023-08-30 06:26:09,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.88888888888889) internal successors, (1204), 18 states have internal predecessors, (1204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:09,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:26:09,553 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:26:09,557 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2023-08-30 06:26:09,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:26:09,754 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:26:09,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:26:09,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1715099570, now seen corresponding path program 23 times [2023-08-30 06:26:09,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:26:09,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952654762] [2023-08-30 06:26:09,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:26:09,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:26:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:26:09,873 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:09,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:26:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952654762] [2023-08-30 06:26:09,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952654762] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:26:09,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407070309] [2023-08-30 06:26:09,874 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 06:26:09,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:26:09,875 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:26:09,876 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:26:09,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 06:26:09,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-30 06:26:09,953 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:26:09,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:26:09,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:26:10,061 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:10,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:26:10,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:10,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407070309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:26:10,117 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:26:10,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2023-08-30 06:26:10,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361440987] [2023-08-30 06:26:10,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:26:10,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 06:26:10,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:26:10,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 06:26:10,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2023-08-30 06:26:10,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:26:10,206 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 1503 transitions, 41124 flow. Second operand has 19 states, 19 states have (on average 66.84210526315789) internal successors, (1270), 19 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:10,206 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:26:10,206 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:26:10,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:26:16,358 INFO L130 PetriNetUnfolder]: 6506/12382 cut-off events. [2023-08-30 06:26:16,358 INFO L131 PetriNetUnfolder]: For 539831/539831 co-relation queries the response was YES. [2023-08-30 06:26:16,433 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136460 conditions, 12382 events. 6506/12382 cut-off events. For 539831/539831 co-relation queries the response was YES. Maximal size of possible extension queue 1001. Compared 107294 event pairs, 185 based on Foata normal form. 182/12564 useless extension candidates. Maximal degree in co-relation 136342. Up to 3734 conditions per place. [2023-08-30 06:26:16,484 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 747 selfloop transitions, 1593 changer transitions 38/2378 dead transitions. [2023-08-30 06:26:16,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 2378 transitions, 68054 flow [2023-08-30 06:26:16,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-30 06:26:16,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-30 06:26:16,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2200 transitions. [2023-08-30 06:26:16,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435483870967742 [2023-08-30 06:26:16,487 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2200 transitions. [2023-08-30 06:26:16,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2200 transitions. [2023-08-30 06:26:16,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:26:16,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2200 transitions. [2023-08-30 06:26:16,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 70.96774193548387) internal successors, (2200), 31 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:16,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 160.0) internal successors, (5120), 32 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:16,494 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 160.0) internal successors, (5120), 32 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:16,494 INFO L175 Difference]: Start difference. First operand has 386 places, 1503 transitions, 41124 flow. Second operand 31 states and 2200 transitions. [2023-08-30 06:26:16,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 2378 transitions, 68054 flow [2023-08-30 06:26:23,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 2378 transitions, 66789 flow, removed 517 selfloop flow, removed 12 redundant places. [2023-08-30 06:26:23,320 INFO L231 Difference]: Finished difference. Result has 416 places, 2154 transitions, 64843 flow [2023-08-30 06:26:23,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=40387, PETRI_DIFFERENCE_MINUEND_PLACES=374, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1503, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=997, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=64843, PETRI_PLACES=416, PETRI_TRANSITIONS=2154} [2023-08-30 06:26:23,322 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 387 predicate places. [2023-08-30 06:26:23,322 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 2154 transitions, 64843 flow [2023-08-30 06:26:23,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 66.84210526315789) internal successors, (1270), 19 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:23,322 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:26:23,322 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:26:23,327 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-08-30 06:26:23,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-30 06:26:23,528 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:26:23,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:26:23,528 INFO L85 PathProgramCache]: Analyzing trace with hash 349685084, now seen corresponding path program 24 times [2023-08-30 06:26:23,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:26:23,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579645832] [2023-08-30 06:26:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:26:23,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:26:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:26:23,631 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:23,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:26:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579645832] [2023-08-30 06:26:23,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579645832] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:26:23,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905354285] [2023-08-30 06:26:23,632 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 06:26:23,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:26:23,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:26:23,637 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:26:23,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 06:26:23,724 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-30 06:26:23,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:26:23,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:26:23,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:26:23,820 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:23,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:26:23,868 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:23,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905354285] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:26:23,869 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:26:23,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2023-08-30 06:26:23,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340330808] [2023-08-30 06:26:23,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:26:23,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 06:26:23,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:26:23,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 06:26:23,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-08-30 06:26:23,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:26:23,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 2154 transitions, 64843 flow. Second operand has 21 states, 21 states have (on average 66.66666666666667) internal successors, (1400), 21 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:23,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:26:23,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:26:23,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:26:32,672 INFO L130 PetriNetUnfolder]: 6744/12910 cut-off events. [2023-08-30 06:26:32,672 INFO L131 PetriNetUnfolder]: For 609494/609494 co-relation queries the response was YES. [2023-08-30 06:26:32,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151597 conditions, 12910 events. 6744/12910 cut-off events. For 609494/609494 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 112910 event pairs, 783 based on Foata normal form. 32/12942 useless extension candidates. Maximal degree in co-relation 151468. Up to 4268 conditions per place. [2023-08-30 06:26:32,817 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 1385 selfloop transitions, 1002 changer transitions 13/2400 dead transitions. [2023-08-30 06:26:32,818 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 455 places, 2400 transitions, 73903 flow [2023-08-30 06:26:32,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-30 06:26:32,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-30 06:26:32,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2810 transitions. [2023-08-30 06:26:32,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4390625 [2023-08-30 06:26:32,821 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2810 transitions. [2023-08-30 06:26:32,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2810 transitions. [2023-08-30 06:26:32,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:26:32,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2810 transitions. [2023-08-30 06:26:32,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 70.25) internal successors, (2810), 40 states have internal predecessors, (2810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:32,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 160.0) internal successors, (6560), 41 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:32,830 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 160.0) internal successors, (6560), 41 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:32,830 INFO L175 Difference]: Start difference. First operand has 416 places, 2154 transitions, 64843 flow. Second operand 40 states and 2810 transitions. [2023-08-30 06:26:32,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 455 places, 2400 transitions, 73903 flow [2023-08-30 06:26:42,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 2400 transitions, 72391 flow, removed 644 selfloop flow, removed 13 redundant places. [2023-08-30 06:26:42,251 INFO L231 Difference]: Finished difference. Result has 448 places, 2279 transitions, 68640 flow [2023-08-30 06:26:42,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=63331, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=893, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=68640, PETRI_PLACES=448, PETRI_TRANSITIONS=2279} [2023-08-30 06:26:42,253 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 419 predicate places. [2023-08-30 06:26:42,253 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 2279 transitions, 68640 flow [2023-08-30 06:26:42,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.66666666666667) internal successors, (1400), 21 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:42,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:26:42,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:26:42,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-30 06:26:42,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-08-30 06:26:42,459 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:26:42,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:26:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -529359662, now seen corresponding path program 25 times [2023-08-30 06:26:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:26:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193611629] [2023-08-30 06:26:42,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:26:42,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:26:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:26:42,563 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:42,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:26:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193611629] [2023-08-30 06:26:42,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193611629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:26:42,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082851396] [2023-08-30 06:26:42,564 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 06:26:42,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:26:42,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:26:42,569 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:26:42,572 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-30 06:26:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:26:42,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-30 06:26:42,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:26:42,721 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:26:42,721 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:26:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:26:42,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2082851396] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:26:42,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:26:42,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 8] total 21 [2023-08-30 06:26:42,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6054967] [2023-08-30 06:26:42,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:26:42,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 06:26:42,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:26:42,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 06:26:42,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2023-08-30 06:26:42,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:26:42,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 2279 transitions, 68640 flow. Second operand has 21 states, 21 states have (on average 66.80952380952381) internal successors, (1403), 21 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:42,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:26:42,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:26:42,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:26:51,630 INFO L130 PetriNetUnfolder]: 6694/12730 cut-off events. [2023-08-30 06:26:51,630 INFO L131 PetriNetUnfolder]: For 667166/667166 co-relation queries the response was YES. [2023-08-30 06:26:51,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151341 conditions, 12730 events. 6694/12730 cut-off events. For 667166/667166 co-relation queries the response was YES. Maximal size of possible extension queue 1045. Compared 110254 event pairs, 2163 based on Foata normal form. 106/12836 useless extension candidates. Maximal degree in co-relation 151206. Up to 10872 conditions per place. [2023-08-30 06:26:51,769 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 2037 selfloop transitions, 321 changer transitions 20/2378 dead transitions. [2023-08-30 06:26:51,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 2378 transitions, 74172 flow [2023-08-30 06:26:51,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-30 06:26:51,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-30 06:26:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1857 transitions. [2023-08-30 06:26:51,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4463942307692308 [2023-08-30 06:26:51,771 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1857 transitions. [2023-08-30 06:26:51,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1857 transitions. [2023-08-30 06:26:51,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:26:51,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1857 transitions. [2023-08-30 06:26:51,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 71.42307692307692) internal successors, (1857), 26 states have internal predecessors, (1857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:51,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:51,777 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 160.0) internal successors, (4320), 27 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:26:51,777 INFO L175 Difference]: Start difference. First operand has 448 places, 2279 transitions, 68640 flow. Second operand 26 states and 1857 transitions. [2023-08-30 06:26:51,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 2378 transitions, 74172 flow [2023-08-30 06:27:00,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 2378 transitions, 71505 flow, removed 671 selfloop flow, removed 15 redundant places. [2023-08-30 06:27:00,889 INFO L231 Difference]: Finished difference. Result has 459 places, 2278 transitions, 66530 flow [2023-08-30 06:27:00,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=65445, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1963, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=66530, PETRI_PLACES=459, PETRI_TRANSITIONS=2278} [2023-08-30 06:27:00,890 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 430 predicate places. [2023-08-30 06:27:00,890 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 2278 transitions, 66530 flow [2023-08-30 06:27:00,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.80952380952381) internal successors, (1403), 21 states have internal predecessors, (1403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:00,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:27:00,891 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:27:00,895 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2023-08-30 06:27:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-08-30 06:27:01,092 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:27:01,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:27:01,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1269540569, now seen corresponding path program 26 times [2023-08-30 06:27:01,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:27:01,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309454758] [2023-08-30 06:27:01,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:27:01,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:27:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:27:01,201 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:27:01,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:27:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309454758] [2023-08-30 06:27:01,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309454758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:27:01,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617157909] [2023-08-30 06:27:01,201 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:27:01,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:27:01,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:27:01,205 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:27:01,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-30 06:27:01,288 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:27:01,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:27:01,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 06:27:01,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:27:01,322 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:27:01,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:27:01,371 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:27:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617157909] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:27:01,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:27:01,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2023-08-30 06:27:01,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132004003] [2023-08-30 06:27:01,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:27:01,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 06:27:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:27:01,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 06:27:01,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 06:27:01,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 160 [2023-08-30 06:27:01,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 2278 transitions, 66530 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:01,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:27:01,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 160 [2023-08-30 06:27:01,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:27:13,107 INFO L130 PetriNetUnfolder]: 9280/17629 cut-off events. [2023-08-30 06:27:13,107 INFO L131 PetriNetUnfolder]: For 862907/862918 co-relation queries the response was YES. [2023-08-30 06:27:13,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206323 conditions, 17629 events. 9280/17629 cut-off events. For 862907/862918 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 160367 event pairs, 620 based on Foata normal form. 40/17663 useless extension candidates. Maximal degree in co-relation 206189. Up to 9136 conditions per place. [2023-08-30 06:27:13,316 INFO L137 encePairwiseOnDemand]: 156/160 looper letters, 1800 selfloop transitions, 1425 changer transitions 140/3374 dead transitions. [2023-08-30 06:27:13,317 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 3374 transitions, 101280 flow [2023-08-30 06:27:13,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 06:27:13,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 06:27:13,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 586 transitions. [2023-08-30 06:27:13,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232142857142857 [2023-08-30 06:27:13,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 586 transitions. [2023-08-30 06:27:13,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 586 transitions. [2023-08-30 06:27:13,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:27:13,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 586 transitions. [2023-08-30 06:27:13,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.71428571428571) internal successors, (586), 7 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:13,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:13,321 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 160.0) internal successors, (1280), 8 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:13,321 INFO L175 Difference]: Start difference. First operand has 459 places, 2278 transitions, 66530 flow. Second operand 7 states and 586 transitions. [2023-08-30 06:27:13,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 3374 transitions, 101280 flow [2023-08-30 06:27:27,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 3374 transitions, 100242 flow, removed 277 selfloop flow, removed 14 redundant places. [2023-08-30 06:27:27,494 INFO L231 Difference]: Finished difference. Result has 455 places, 3027 transitions, 93432 flow [2023-08-30 06:27:27,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=65886, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=658, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=862, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=93432, PETRI_PLACES=455, PETRI_TRANSITIONS=3027} [2023-08-30 06:27:27,495 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 426 predicate places. [2023-08-30 06:27:27,495 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 3027 transitions, 93432 flow [2023-08-30 06:27:27,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:27,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:27:27,496 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:27:27,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-08-30 06:27:27,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:27:27,696 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:27:27,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:27:27,697 INFO L85 PathProgramCache]: Analyzing trace with hash 642733181, now seen corresponding path program 27 times [2023-08-30 06:27:27,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:27:27,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811467652] [2023-08-30 06:27:27,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:27:27,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:27:27,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:27:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:27:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:27:27,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811467652] [2023-08-30 06:27:27,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811467652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:27:27,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172019980] [2023-08-30 06:27:27,821 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:27:27,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:27:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:27:27,822 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:27:27,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-30 06:27:27,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 06:27:27,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:27:27,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:27:27,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:27:27,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:27:27,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:27:28,067 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:27:28,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172019980] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:27:28,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:27:28,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 20 [2023-08-30 06:27:28,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910001939] [2023-08-30 06:27:28,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:27:28,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 06:27:28,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:27:28,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 06:27:28,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-08-30 06:27:28,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:27:28,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 3027 transitions, 93432 flow. Second operand has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:28,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:27:28,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:27:28,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:27:45,816 INFO L130 PetriNetUnfolder]: 11009/20878 cut-off events. [2023-08-30 06:27:45,816 INFO L131 PetriNetUnfolder]: For 1086199/1086199 co-relation queries the response was YES. [2023-08-30 06:27:45,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256729 conditions, 20878 events. 11009/20878 cut-off events. For 1086199/1086199 co-relation queries the response was YES. Maximal size of possible extension queue 1606. Compared 193740 event pairs, 891 based on Foata normal form. 84/20960 useless extension candidates. Maximal degree in co-relation 256591. Up to 16861 conditions per place. [2023-08-30 06:27:46,081 INFO L137 encePairwiseOnDemand]: 155/160 looper letters, 3111 selfloop transitions, 669 changer transitions 75/3855 dead transitions. [2023-08-30 06:27:46,082 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 3855 transitions, 125726 flow [2023-08-30 06:27:46,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-30 06:27:46,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-30 06:27:46,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 934 transitions. [2023-08-30 06:27:46,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44903846153846155 [2023-08-30 06:27:46,083 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 934 transitions. [2023-08-30 06:27:46,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 934 transitions. [2023-08-30 06:27:46,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:27:46,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 934 transitions. [2023-08-30 06:27:46,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.84615384615384) internal successors, (934), 13 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:46,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:46,085 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 160.0) internal successors, (2240), 14 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:27:46,085 INFO L175 Difference]: Start difference. First operand has 455 places, 3027 transitions, 93432 flow. Second operand 13 states and 934 transitions. [2023-08-30 06:27:46,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 3855 transitions, 125726 flow [2023-08-30 06:28:07,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 3855 transitions, 124088 flow, removed 791 selfloop flow, removed 1 redundant places. [2023-08-30 06:28:07,133 INFO L231 Difference]: Finished difference. Result has 473 places, 3545 transitions, 113318 flow [2023-08-30 06:28:07,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=91827, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3027, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=113318, PETRI_PLACES=473, PETRI_TRANSITIONS=3545} [2023-08-30 06:28:07,136 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 444 predicate places. [2023-08-30 06:28:07,136 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 3545 transitions, 113318 flow [2023-08-30 06:28:07,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:07,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:28:07,136 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:28:07,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2023-08-30 06:28:07,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-30 06:28:07,337 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:28:07,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:28:07,337 INFO L85 PathProgramCache]: Analyzing trace with hash -743847145, now seen corresponding path program 28 times [2023-08-30 06:28:07,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:28:07,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486749149] [2023-08-30 06:28:07,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:28:07,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:28:07,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:28:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:07,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:28:07,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486749149] [2023-08-30 06:28:07,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486749149] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:28:07,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058798435] [2023-08-30 06:28:07,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:28:07,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:28:07,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:28:07,445 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:28:07,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-08-30 06:28:07,519 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:28:07,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:28:07,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:28:07,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:28:07,620 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:07,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:28:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:07,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058798435] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:28:07,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:28:07,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 22 [2023-08-30 06:28:07,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530098155] [2023-08-30 06:28:07,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:28:07,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 06:28:07,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:28:07,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 06:28:07,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2023-08-30 06:28:07,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:28:07,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 3545 transitions, 113318 flow. Second operand has 22 states, 22 states have (on average 66.54545454545455) internal successors, (1464), 22 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:07,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:28:07,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:28:07,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:28:30,395 INFO L130 PetriNetUnfolder]: 11960/22645 cut-off events. [2023-08-30 06:28:30,395 INFO L131 PetriNetUnfolder]: For 1222142/1222142 co-relation queries the response was YES. [2023-08-30 06:28:30,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281480 conditions, 22645 events. 11960/22645 cut-off events. For 1222142/1222142 co-relation queries the response was YES. Maximal size of possible extension queue 1654. Compared 211154 event pairs, 923 based on Foata normal form. 108/22751 useless extension candidates. Maximal degree in co-relation 281335. Up to 17690 conditions per place. [2023-08-30 06:28:30,685 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 3184 selfloop transitions, 875 changer transitions 21/4080 dead transitions. [2023-08-30 06:28:30,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 4080 transitions, 135613 flow [2023-08-30 06:28:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-30 06:28:30,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-30 06:28:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1425 transitions. [2023-08-30 06:28:30,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2023-08-30 06:28:30,687 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1425 transitions. [2023-08-30 06:28:30,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1425 transitions. [2023-08-30 06:28:30,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:28:30,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1425 transitions. [2023-08-30 06:28:30,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 71.25) internal successors, (1425), 20 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:30,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:30,691 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 160.0) internal successors, (3360), 21 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:30,691 INFO L175 Difference]: Start difference. First operand has 473 places, 3545 transitions, 113318 flow. Second operand 20 states and 1425 transitions. [2023-08-30 06:28:30,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 4080 transitions, 135613 flow [2023-08-30 06:28:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 488 places, 4080 transitions, 135189 flow, removed 193 selfloop flow, removed 4 redundant places. [2023-08-30 06:28:56,682 INFO L231 Difference]: Finished difference. Result has 494 places, 3805 transitions, 124619 flow [2023-08-30 06:28:56,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=112996, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3545, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=665, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=124619, PETRI_PLACES=494, PETRI_TRANSITIONS=3805} [2023-08-30 06:28:56,684 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 465 predicate places. [2023-08-30 06:28:56,685 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 3805 transitions, 124619 flow [2023-08-30 06:28:56,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.54545454545455) internal successors, (1464), 22 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:56,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:28:56,685 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:28:56,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-08-30 06:28:56,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-30 06:28:56,885 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:28:56,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:28:56,886 INFO L85 PathProgramCache]: Analyzing trace with hash 1939804055, now seen corresponding path program 29 times [2023-08-30 06:28:56,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:28:56,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599680752] [2023-08-30 06:28:56,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:28:56,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:28:56,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:28:56,987 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:56,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:28:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599680752] [2023-08-30 06:28:56,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599680752] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:28:56,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535414816] [2023-08-30 06:28:56,987 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 06:28:56,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:28:56,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:28:56,988 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:28:56,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-08-30 06:28:57,063 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 06:28:57,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:28:57,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:28:57,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:28:57,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:57,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:28:57,203 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:28:57,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535414816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:28:57,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:28:57,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2023-08-30 06:28:57,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239655026] [2023-08-30 06:28:57,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:28:57,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 06:28:57,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:28:57,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 06:28:57,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2023-08-30 06:28:57,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:28:57,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 3805 transitions, 124619 flow. Second operand has 21 states, 21 states have (on average 66.57142857142857) internal successors, (1398), 21 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:28:57,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:28:57,277 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:28:57,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:29:24,497 INFO L130 PetriNetUnfolder]: 12724/24200 cut-off events. [2023-08-30 06:29:24,498 INFO L131 PetriNetUnfolder]: For 1479375/1479375 co-relation queries the response was YES. [2023-08-30 06:29:24,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305792 conditions, 24200 events. 12724/24200 cut-off events. For 1479375/1479375 co-relation queries the response was YES. Maximal size of possible extension queue 1738. Compared 229301 event pairs, 295 based on Foata normal form. 170/24368 useless extension candidates. Maximal degree in co-relation 305641. Up to 7420 conditions per place. [2023-08-30 06:29:24,823 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 965 selfloop transitions, 3387 changer transitions 64/4416 dead transitions. [2023-08-30 06:29:24,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 544 places, 4416 transitions, 146676 flow [2023-08-30 06:29:24,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-30 06:29:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-30 06:29:24,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3627 transitions. [2023-08-30 06:29:24,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44448529411764703 [2023-08-30 06:29:24,826 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3627 transitions. [2023-08-30 06:29:24,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3627 transitions. [2023-08-30 06:29:24,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:29:24,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3627 transitions. [2023-08-30 06:29:24,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 71.11764705882354) internal successors, (3627), 51 states have internal predecessors, (3627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:29:24,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 160.0) internal successors, (8320), 52 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:29:24,835 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 160.0) internal successors, (8320), 52 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:29:24,835 INFO L175 Difference]: Start difference. First operand has 494 places, 3805 transitions, 124619 flow. Second operand 51 states and 3627 transitions. [2023-08-30 06:29:24,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 544 places, 4416 transitions, 146676 flow [2023-08-30 06:29:56,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 539 places, 4416 transitions, 145662 flow, removed 479 selfloop flow, removed 5 redundant places. [2023-08-30 06:29:57,073 INFO L231 Difference]: Finished difference. Result has 553 places, 4071 transitions, 143409 flow [2023-08-30 06:29:57,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=123727, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=665, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=143409, PETRI_PLACES=553, PETRI_TRANSITIONS=4071} [2023-08-30 06:29:57,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 524 predicate places. [2023-08-30 06:29:57,077 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 4071 transitions, 143409 flow [2023-08-30 06:29:57,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.57142857142857) internal successors, (1398), 21 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:29:57,078 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:29:57,078 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:29:57,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-08-30 06:29:57,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:29:57,284 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:29:57,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:29:57,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1495694065, now seen corresponding path program 30 times [2023-08-30 06:29:57,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:29:57,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602775773] [2023-08-30 06:29:57,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:29:57,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:29:57,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:29:57,401 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:29:57,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:29:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602775773] [2023-08-30 06:29:57,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602775773] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:29:57,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2035486013] [2023-08-30 06:29:57,402 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 06:29:57,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:29:57,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:29:57,405 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:29:57,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-08-30 06:29:57,502 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-08-30 06:29:57,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:29:57,503 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:29:57,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:29:57,596 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:29:57,596 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:29:57,662 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 11 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:29:57,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2035486013] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:29:57,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:29:57,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 21 [2023-08-30 06:29:57,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170752058] [2023-08-30 06:29:57,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:29:57,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 06:29:57,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:29:57,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 06:29:57,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2023-08-30 06:29:57,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:29:57,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 4071 transitions, 143409 flow. Second operand has 21 states, 21 states have (on average 66.57142857142857) internal successors, (1398), 21 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:29:57,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:29:57,715 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:29:57,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:30:29,195 INFO L130 PetriNetUnfolder]: 12675/24059 cut-off events. [2023-08-30 06:30:29,195 INFO L131 PetriNetUnfolder]: For 1632029/1632029 co-relation queries the response was YES. [2023-08-30 06:30:29,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324486 conditions, 24059 events. 12675/24059 cut-off events. For 1632029/1632029 co-relation queries the response was YES. Maximal size of possible extension queue 1735. Compared 227240 event pairs, 141 based on Foata normal form. 20/24077 useless extension candidates. Maximal degree in co-relation 324321. Up to 7424 conditions per place. [2023-08-30 06:30:29,615 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 595 selfloop transitions, 3733 changer transitions 64/4392 dead transitions. [2023-08-30 06:30:29,615 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 4392 transitions, 157370 flow [2023-08-30 06:30:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-30 06:30:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-30 06:30:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4452 transitions. [2023-08-30 06:30:29,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434765625 [2023-08-30 06:30:29,619 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4452 transitions. [2023-08-30 06:30:29,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4452 transitions. [2023-08-30 06:30:29,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:30:29,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4452 transitions. [2023-08-30 06:30:29,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 69.5625) internal successors, (4452), 64 states have internal predecessors, (4452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:30:29,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 160.0) internal successors, (10400), 65 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:30:29,630 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 160.0) internal successors, (10400), 65 states have internal predecessors, (10400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:30:29,630 INFO L175 Difference]: Start difference. First operand has 553 places, 4071 transitions, 143409 flow. Second operand 64 states and 4452 transitions. [2023-08-30 06:30:29,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 4392 transitions, 157370 flow [2023-08-30 06:31:13,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 589 places, 4392 transitions, 150570 flow, removed 2179 selfloop flow, removed 27 redundant places. [2023-08-30 06:31:13,776 INFO L231 Difference]: Finished difference. Result has 590 places, 4172 transitions, 146440 flow [2023-08-30 06:31:13,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=136649, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4071, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3637, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=146440, PETRI_PLACES=590, PETRI_TRANSITIONS=4172} [2023-08-30 06:31:13,779 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 561 predicate places. [2023-08-30 06:31:13,779 INFO L495 AbstractCegarLoop]: Abstraction has has 590 places, 4172 transitions, 146440 flow [2023-08-30 06:31:13,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.57142857142857) internal successors, (1398), 21 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:31:13,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:31:13,780 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:31:13,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-08-30 06:31:13,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:31:13,980 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:31:13,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:31:13,980 INFO L85 PathProgramCache]: Analyzing trace with hash 334615609, now seen corresponding path program 31 times [2023-08-30 06:31:13,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:31:13,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129222897] [2023-08-30 06:31:13,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:31:13,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:31:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:31:14,080 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:31:14,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:31:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129222897] [2023-08-30 06:31:14,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129222897] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:31:14,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560602517] [2023-08-30 06:31:14,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 06:31:14,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:31:14,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:31:14,082 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:31:14,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-08-30 06:31:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:31:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:31:14,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:31:14,256 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:31:14,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:31:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 21 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:31:14,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560602517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:31:14,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:31:14,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 11] total 20 [2023-08-30 06:31:14,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988242192] [2023-08-30 06:31:14,316 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:31:14,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 06:31:14,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:31:14,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 06:31:14,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-08-30 06:31:14,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:31:14,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 590 places, 4172 transitions, 146440 flow. Second operand has 20 states, 20 states have (on average 66.8) internal successors, (1336), 20 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:31:14,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:31:14,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:31:14,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:31:51,070 INFO L130 PetriNetUnfolder]: 14706/27773 cut-off events. [2023-08-30 06:31:51,070 INFO L131 PetriNetUnfolder]: For 2002112/2002112 co-relation queries the response was YES. [2023-08-30 06:31:51,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379767 conditions, 27773 events. 14706/27773 cut-off events. For 2002112/2002112 co-relation queries the response was YES. Maximal size of possible extension queue 2054. Compared 267197 event pairs, 559 based on Foata normal form. 216/27987 useless extension candidates. Maximal degree in co-relation 379606. Up to 10387 conditions per place. [2023-08-30 06:31:51,803 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 2063 selfloop transitions, 3052 changer transitions 42/5157 dead transitions. [2023-08-30 06:31:51,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 619 places, 5157 transitions, 186933 flow [2023-08-30 06:31:51,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 06:31:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 06:31:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2547 transitions. [2023-08-30 06:31:51,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4421875 [2023-08-30 06:31:51,806 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2547 transitions. [2023-08-30 06:31:51,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2547 transitions. [2023-08-30 06:31:51,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:31:51,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2547 transitions. [2023-08-30 06:31:51,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 70.75) internal successors, (2547), 36 states have internal predecessors, (2547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:31:51,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 160.0) internal successors, (5920), 37 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:31:51,813 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 160.0) internal successors, (5920), 37 states have internal predecessors, (5920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:31:51,813 INFO L175 Difference]: Start difference. First operand has 590 places, 4172 transitions, 146440 flow. Second operand 36 states and 2547 transitions. [2023-08-30 06:31:51,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 619 places, 5157 transitions, 186933 flow [2023-08-30 06:32:47,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 593 places, 5157 transitions, 183040 flow, removed 1090 selfloop flow, removed 26 redundant places. [2023-08-30 06:32:48,074 INFO L231 Difference]: Finished difference. Result has 601 places, 4829 transitions, 176699 flow [2023-08-30 06:32:48,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=143212, PETRI_DIFFERENCE_MINUEND_PLACES=558, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2493, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1450, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=176699, PETRI_PLACES=601, PETRI_TRANSITIONS=4829} [2023-08-30 06:32:48,077 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 572 predicate places. [2023-08-30 06:32:48,077 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 4829 transitions, 176699 flow [2023-08-30 06:32:48,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 66.8) internal successors, (1336), 20 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:32:48,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:32:48,078 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:32:48,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-08-30 06:32:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2023-08-30 06:32:48,278 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:32:48,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:32:48,279 INFO L85 PathProgramCache]: Analyzing trace with hash 408137337, now seen corresponding path program 32 times [2023-08-30 06:32:48,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:32:48,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889704440] [2023-08-30 06:32:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:32:48,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:32:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:32:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:32:48,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:32:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889704440] [2023-08-30 06:32:48,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889704440] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:32:48,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370006365] [2023-08-30 06:32:48,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:32:48,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:32:48,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:32:48,482 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:32:48,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-08-30 06:32:48,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:32:48,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:32:48,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:32:48,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:32:48,678 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:32:48,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:32:48,739 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:32:48,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370006365] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:32:48,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:32:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 12] total 21 [2023-08-30 06:32:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920158020] [2023-08-30 06:32:48,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:32:48,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-30 06:32:48,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:32:48,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-30 06:32:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2023-08-30 06:32:48,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:32:48,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 4829 transitions, 176699 flow. Second operand has 21 states, 21 states have (on average 66.76190476190476) internal successors, (1402), 21 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:32:48,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:32:48,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:32:48,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:33:33,325 INFO L130 PetriNetUnfolder]: 15273/28968 cut-off events. [2023-08-30 06:33:33,325 INFO L131 PetriNetUnfolder]: For 2422109/2422109 co-relation queries the response was YES. [2023-08-30 06:33:33,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 403846 conditions, 28968 events. 15273/28968 cut-off events. For 2422109/2422109 co-relation queries the response was YES. Maximal size of possible extension queue 2126. Compared 281007 event pairs, 329 based on Foata normal form. 350/29316 useless extension candidates. Maximal degree in co-relation 403682. Up to 9010 conditions per place. [2023-08-30 06:33:33,872 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 1171 selfloop transitions, 4141 changer transitions 24/5336 dead transitions. [2023-08-30 06:33:33,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 645 places, 5336 transitions, 198621 flow [2023-08-30 06:33:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-08-30 06:33:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-08-30 06:33:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3175 transitions. [2023-08-30 06:33:33,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4409722222222222 [2023-08-30 06:33:33,876 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 3175 transitions. [2023-08-30 06:33:33,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 3175 transitions. [2023-08-30 06:33:33,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:33:33,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 3175 transitions. [2023-08-30 06:33:33,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 70.55555555555556) internal successors, (3175), 45 states have internal predecessors, (3175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:33:33,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 160.0) internal successors, (7360), 46 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:33:33,884 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 160.0) internal successors, (7360), 46 states have internal predecessors, (7360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:33:33,884 INFO L175 Difference]: Start difference. First operand has 601 places, 4829 transitions, 176699 flow. Second operand 45 states and 3175 transitions. [2023-08-30 06:33:33,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 645 places, 5336 transitions, 198621 flow [2023-08-30 06:34:42,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 5336 transitions, 196724 flow, removed 897 selfloop flow, removed 11 redundant places. [2023-08-30 06:34:42,799 INFO L231 Difference]: Finished difference. Result has 643 places, 5060 transitions, 195824 flow [2023-08-30 06:34:42,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=174831, PETRI_DIFFERENCE_MINUEND_PLACES=590, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4826, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3923, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=874, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=195824, PETRI_PLACES=643, PETRI_TRANSITIONS=5060} [2023-08-30 06:34:42,803 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 614 predicate places. [2023-08-30 06:34:42,804 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 5060 transitions, 195824 flow [2023-08-30 06:34:42,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.76190476190476) internal successors, (1402), 21 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:34:42,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:34:42,804 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:34:42,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-08-30 06:34:43,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:34:43,009 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:34:43,010 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:34:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1331742331, now seen corresponding path program 33 times [2023-08-30 06:34:43,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:34:43,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78497463] [2023-08-30 06:34:43,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:34:43,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:34:43,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:34:43,144 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:34:43,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:34:43,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78497463] [2023-08-30 06:34:43,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78497463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:34:43,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1808855677] [2023-08-30 06:34:43,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 06:34:43,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:34:43,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:34:43,146 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:34:43,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-08-30 06:34:43,239 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 06:34:43,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:34:43,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:34:43,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:34:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:34:43,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:34:43,448 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:34:43,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1808855677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:34:43,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:34:43,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2023-08-30 06:34:43,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905234673] [2023-08-30 06:34:43,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:34:43,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-30 06:34:43,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:34:43,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-30 06:34:43,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=507, Unknown=0, NotChecked=0, Total=650 [2023-08-30 06:34:43,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:34:43,525 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 5060 transitions, 195824 flow. Second operand has 26 states, 26 states have (on average 66.61538461538461) internal successors, (1732), 26 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:34:43,525 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:34:43,525 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:34:43,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 06:35:46,808 INFO L130 PetriNetUnfolder]: 21016/39545 cut-off events. [2023-08-30 06:35:46,808 INFO L131 PetriNetUnfolder]: For 3216790/3216790 co-relation queries the response was YES. [2023-08-30 06:35:47,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584611 conditions, 39545 events. 21016/39545 cut-off events. For 3216790/3216790 co-relation queries the response was YES. Maximal size of possible extension queue 2820. Compared 396148 event pairs, 1203 based on Foata normal form. 198/39741 useless extension candidates. Maximal degree in co-relation 584438. Up to 23440 conditions per place. [2023-08-30 06:35:47,617 INFO L137 encePairwiseOnDemand]: 154/160 looper letters, 4434 selfloop transitions, 2808 changer transitions 98/7340 dead transitions. [2023-08-30 06:35:47,617 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 682 places, 7340 transitions, 296267 flow [2023-08-30 06:35:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-30 06:35:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-30 06:35:47,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2846 transitions. [2023-08-30 06:35:47,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4446875 [2023-08-30 06:35:47,620 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2846 transitions. [2023-08-30 06:35:47,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2846 transitions. [2023-08-30 06:35:47,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 06:35:47,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2846 transitions. [2023-08-30 06:35:47,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 71.15) internal successors, (2846), 40 states have internal predecessors, (2846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:35:47,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 160.0) internal successors, (6560), 41 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:35:47,628 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 160.0) internal successors, (6560), 41 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:35:47,628 INFO L175 Difference]: Start difference. First operand has 643 places, 5060 transitions, 195824 flow. Second operand 40 states and 2846 transitions. [2023-08-30 06:35:47,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 682 places, 7340 transitions, 296267 flow [2023-08-30 06:38:05,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 653 places, 7340 transitions, 292269 flow, removed 1178 selfloop flow, removed 29 redundant places. [2023-08-30 06:38:05,366 INFO L231 Difference]: Finished difference. Result has 675 places, 6755 transitions, 275492 flow [2023-08-30 06:38:05,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=192802, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5060, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1405, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=275492, PETRI_PLACES=675, PETRI_TRANSITIONS=6755} [2023-08-30 06:38:05,371 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 646 predicate places. [2023-08-30 06:38:05,371 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 6755 transitions, 275492 flow [2023-08-30 06:38:05,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 66.61538461538461) internal successors, (1732), 26 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:38:05,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:38:05,371 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:38:05,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-08-30 06:38:05,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-08-30 06:38:05,578 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 06:38:05,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:38:05,578 INFO L85 PathProgramCache]: Analyzing trace with hash -990199309, now seen corresponding path program 34 times [2023-08-30 06:38:05,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:38:05,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806075046] [2023-08-30 06:38:05,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:38:05,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:38:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:38:05,682 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 06:38:05,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:38:05,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [806075046] [2023-08-30 06:38:05,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [806075046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:38:05,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670135126] [2023-08-30 06:38:05,683 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 06:38:05,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:38:05,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:38:05,684 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:38:05,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-08-30 06:38:05,767 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 06:38:05,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:38:05,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 06:38:05,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:38:05,863 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:38:05,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:38:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 20 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-30 06:38:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670135126] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:38:05,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:38:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 10] total 20 [2023-08-30 06:38:05,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671705853] [2023-08-30 06:38:05,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:38:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 06:38:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:38:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 06:38:05,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-08-30 06:38:05,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 160 [2023-08-30 06:38:05,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 6755 transitions, 275492 flow. Second operand has 20 states, 20 states have (on average 66.8) internal successors, (1336), 20 states have internal predecessors, (1336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:38:05,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:38:05,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 160 [2023-08-30 06:38:05,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15