./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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/bench-exp3x3.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 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:26:53,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:26:53,654 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:26:53,698 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:26:53,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:26:53,701 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:26:53,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:26:53,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:26:53,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:26:53,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:26:53,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:26:53,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:26:53,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:26:53,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:26:53,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:26:53,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:26:53,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:26:53,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:26:53,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:26:53,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:26:53,732 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:26:53,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:26:53,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:26:53,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:26:53,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:26:53,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:26:53,741 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:26:53,742 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:26:53,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:26:53,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:26:53,744 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:26:53,745 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:26:53,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:26:53,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:26:53,750 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:26:53,750 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:26:53,750 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:26:53,751 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:26:53,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:26:53,751 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:26:53,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:26:53,758 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:26:53,790 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:26:53,790 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:26:53,791 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:26:53,792 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:26:53,793 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:26:53,793 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:26:53,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:26:53,794 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:26:53,794 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:26:53,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:26:53,795 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:26:53,795 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:26:53,795 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:26:53,796 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:26:53,796 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:26:53,796 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:26:53,796 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:26:53,797 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:26:53,797 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:26:53,797 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:26:53,797 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:26:53,797 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:26:53,798 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:26:53,798 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:26:53,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:26:53,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:26:53,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:26:53,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:26:53,799 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:26:53,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:26:53,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:26:53,800 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:26:53,800 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:26:53,800 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:26:53,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 753355d7d8c08568df49ed9a7977f84d185e0dbf04984bcb7908b11aa84a04b9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:26:54,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:26:54,130 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:26:54,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:26:54,133 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:26:54,133 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:26:54,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-09-01 01:26:55,297 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:26:55,483 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:26:55,484 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-09-01 01:26:55,490 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58a5e70d/9fb82260b36d4f17a928396c246afc04/FLAG8eaea8e67 [2023-09-01 01:26:55,500 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58a5e70d/9fb82260b36d4f17a928396c246afc04 [2023-09-01 01:26:55,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:26:55,503 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:26:55,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:26:55,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:26:55,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:26:55,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f179e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55, skipping insertion in model container [2023-09-01 01:26:55,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:26:55,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:26:55,668 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/bench-exp3x3.wvr.c[2625,2638] [2023-09-01 01:26:55,672 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:26:55,681 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:26:55,703 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/bench-exp3x3.wvr.c[2625,2638] [2023-09-01 01:26:55,704 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:26:55,721 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:26:55,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55 WrapperNode [2023-09-01 01:26:55,722 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:26:55,723 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:26:55,723 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:26:55,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:26:55,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,761 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,792 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-09-01 01:26:55,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:26:55,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:26:55,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:26:55,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:26:55,801 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,814 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,815 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,839 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:26:55,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:26:55,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:26:55,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:26:55,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (1/1) ... [2023-09-01 01:26:55,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:26:55,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:26:55,882 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) [2023-09-01 01:26:55,912 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 [2023-09-01 01:26:55,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:26:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 01:26:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 01:26:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 01:26:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 01:26:55,927 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 01:26:55,927 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 01:26:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 01:26:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 01:26:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 01:26:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-09-01 01:26:55,928 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-09-01 01:26:55,928 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-09-01 01:26:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-09-01 01:26:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:26:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 01:26:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:26:55,929 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:26:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 01:26:55,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:26:55,931 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:26:56,097 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:26:56,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:26:56,436 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:26:56,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:26:56,444 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-09-01 01:26:56,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:26:56 BoogieIcfgContainer [2023-09-01 01:26:56,446 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:26:56,448 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:26:56,448 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:26:56,451 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:26:56,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:26:55" (1/3) ... [2023-09-01 01:26:56,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d8532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:26:56, skipping insertion in model container [2023-09-01 01:26:56,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:26:55" (2/3) ... [2023-09-01 01:26:56,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0d8532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:26:56, skipping insertion in model container [2023-09-01 01:26:56,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:26:56" (3/3) ... [2023-09-01 01:26:56,453 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-09-01 01:26:56,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:26:56,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-09-01 01:26:56,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:26:56,607 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 01:26:56,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 197 transitions, 442 flow [2023-09-01 01:26:56,751 INFO L130 PetriNetUnfolder]: 14/191 cut-off events. [2023-09-01 01:26:56,751 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 01:26:56,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216 conditions, 191 events. 14/191 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 133 event pairs, 0 based on Foata normal form. 0/151 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-09-01 01:26:56,758 INFO L82 GeneralOperation]: Start removeDead. Operand has 202 places, 197 transitions, 442 flow [2023-09-01 01:26:56,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 187 transitions, 410 flow [2023-09-01 01:26:56,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:26:56,789 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 187 transitions, 410 flow [2023-09-01 01:26:56,795 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 187 transitions, 410 flow [2023-09-01 01:26:56,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 187 transitions, 410 flow [2023-09-01 01:26:56,851 INFO L130 PetriNetUnfolder]: 14/187 cut-off events. [2023-09-01 01:26:56,851 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 01:26:56,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 187 events. 14/187 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 132 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 135. Up to 2 conditions per place. [2023-09-01 01:26:56,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 3780 [2023-09-01 01:27:03,958 INFO L134 LiptonReduction]: Checked pairs total: 4791 [2023-09-01 01:27:03,959 INFO L136 LiptonReduction]: Total number of compositions: 178 [2023-09-01 01:27:03,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:27:03,976 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;@1906b430, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:27:03,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 32 error locations. [2023-09-01 01:27:03,977 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 01:27:03,978 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:27:03,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:03,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:27:03,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:03,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:03,983 INFO L85 PathProgramCache]: Analyzing trace with hash 702, now seen corresponding path program 1 times [2023-09-01 01:27:03,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:03,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523710589] [2023-09-01 01:27:03,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:03,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:04,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:04,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:04,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:04,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523710589] [2023-09-01 01:27:04,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523710589] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:04,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:04,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:27:04,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645985897] [2023-09-01 01:27:04,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:04,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:27:04,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:04,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:27:04,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:27:04,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 375 [2023-09-01 01:27:04,120 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 62 transitions, 160 flow. Second operand has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:04,120 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:04,120 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 375 [2023-09-01 01:27:04,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:04,498 INFO L130 PetriNetUnfolder]: 3537/4292 cut-off events. [2023-09-01 01:27:04,499 INFO L131 PetriNetUnfolder]: For 101/101 co-relation queries the response was YES. [2023-09-01 01:27:04,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8781 conditions, 4292 events. 3537/4292 cut-off events. For 101/101 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 11039 event pairs, 1737 based on Foata normal form. 0/2116 useless extension candidates. Maximal degree in co-relation 6140. Up to 4293 conditions per place. [2023-09-01 01:27:04,537 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 59 selfloop transitions, 0 changer transitions 0/59 dead transitions. [2023-09-01 01:27:04,537 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 59 transitions, 272 flow [2023-09-01 01:27:04,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:27:04,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:27:04,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 414 transitions. [2023-09-01 01:27:04,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-09-01 01:27:04,558 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 414 transitions. [2023-09-01 01:27:04,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 414 transitions. [2023-09-01 01:27:04,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:04,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 414 transitions. [2023-09-01 01:27:04,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 207.0) internal successors, (414), 2 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:04,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:04,598 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:04,600 INFO L175 Difference]: Start difference. First operand has 75 places, 62 transitions, 160 flow. Second operand 2 states and 414 transitions. [2023-09-01 01:27:04,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 59 transitions, 272 flow [2023-09-01 01:27:04,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 248 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-09-01 01:27:04,629 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 130 flow [2023-09-01 01:27:04,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=130, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-09-01 01:27:04,633 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-09-01 01:27:04,634 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 130 flow [2023-09-01 01:27:04,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 176.5) internal successors, (353), 2 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:04,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:04,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:27:04,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 01:27:04,638 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:04,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash 689090, now seen corresponding path program 1 times [2023-09-01 01:27:04,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:04,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875390593] [2023-09-01 01:27:04,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:04,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:05,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:05,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875390593] [2023-09-01 01:27:05,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875390593] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:05,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:05,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:05,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526971010] [2023-09-01 01:27:05,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:05,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:05,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:05,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:05,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:05,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-09-01 01:27:05,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:05,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:05,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-09-01 01:27:05,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:05,743 INFO L130 PetriNetUnfolder]: 3375/4096 cut-off events. [2023-09-01 01:27:05,744 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:05,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8258 conditions, 4096 events. 3375/4096 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10445 event pairs, 1656 based on Foata normal form. 0/2035 useless extension candidates. Maximal degree in co-relation 8255. Up to 4096 conditions per place. [2023-09-01 01:27:05,763 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 56 selfloop transitions, 1 changer transitions 0/57 dead transitions. [2023-09-01 01:27:05,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 57 transitions, 240 flow [2023-09-01 01:27:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:05,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:05,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-09-01 01:27:05,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084444444444445 [2023-09-01 01:27:05,766 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-09-01 01:27:05,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-09-01 01:27:05,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:05,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-09-01 01:27:05,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:05,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:05,782 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:05,782 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 130 flow. Second operand 3 states and 572 transitions. [2023-09-01 01:27:05,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 57 transitions, 240 flow [2023-09-01 01:27:05,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 57 transitions, 240 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:27:05,785 INFO L231 Difference]: Finished difference. Result has 61 places, 57 transitions, 128 flow [2023-09-01 01:27:05,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=57} [2023-09-01 01:27:05,787 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-09-01 01:27:05,787 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 57 transitions, 128 flow [2023-09-01 01:27:05,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:05,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:05,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:27:05,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 01:27:05,788 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:05,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:05,791 INFO L85 PathProgramCache]: Analyzing trace with hash 689091, now seen corresponding path program 1 times [2023-09-01 01:27:05,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:05,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340512579] [2023-09-01 01:27:05,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:06,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:06,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340512579] [2023-09-01 01:27:06,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340512579] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:06,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:06,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043771058] [2023-09-01 01:27:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:06,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:06,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:06,194 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-09-01 01:27:06,195 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 57 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,195 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:06,195 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-09-01 01:27:06,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:06,466 INFO L130 PetriNetUnfolder]: 3213/3900 cut-off events. [2023-09-01 01:27:06,467 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:06,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7868 conditions, 3900 events. 3213/3900 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9865 event pairs, 1575 based on Foata normal form. 0/1954 useless extension candidates. Maximal degree in co-relation 7864. Up to 3900 conditions per place. [2023-09-01 01:27:06,486 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 54 selfloop transitions, 1 changer transitions 0/55 dead transitions. [2023-09-01 01:27:06,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 234 flow [2023-09-01 01:27:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:06,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-09-01 01:27:06,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-09-01 01:27:06,489 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-09-01 01:27:06,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-09-01 01:27:06,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:06,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-09-01 01:27:06,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,492 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,493 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,493 INFO L175 Difference]: Start difference. First operand has 61 places, 57 transitions, 128 flow. Second operand 3 states and 546 transitions. [2023-09-01 01:27:06,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 234 flow [2023-09-01 01:27:06,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 233 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:06,496 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 125 flow [2023-09-01 01:27:06,496 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-09-01 01:27:06,498 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -15 predicate places. [2023-09-01 01:27:06,500 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 125 flow [2023-09-01 01:27:06,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:06,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:27:06,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 01:27:06,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:06,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:06,502 INFO L85 PathProgramCache]: Analyzing trace with hash 662230138, now seen corresponding path program 1 times [2023-09-01 01:27:06,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:06,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159580706] [2023-09-01 01:27:06,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:06,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:06,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:06,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:06,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159580706] [2023-09-01 01:27:06,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159580706] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:06,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:06,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:06,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299790904] [2023-09-01 01:27:06,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:06,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:06,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:06,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-09-01 01:27:06,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:06,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:06,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-09-01 01:27:06,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:07,047 INFO L130 PetriNetUnfolder]: 3141/3808 cut-off events. [2023-09-01 01:27:07,048 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:07,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7685 conditions, 3808 events. 3141/3808 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9580 event pairs, 1539 based on Foata normal form. 0/1918 useless extension candidates. Maximal degree in co-relation 7681. Up to 3808 conditions per place. [2023-09-01 01:27:07,065 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 52 selfloop transitions, 1 changer transitions 0/53 dead transitions. [2023-09-01 01:27:07,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 53 transitions, 227 flow [2023-09-01 01:27:07,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:07,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:07,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 544 transitions. [2023-09-01 01:27:07,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355555555555557 [2023-09-01 01:27:07,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 544 transitions. [2023-09-01 01:27:07,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 544 transitions. [2023-09-01 01:27:07,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:07,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 544 transitions. [2023-09-01 01:27:07,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 181.33333333333334) internal successors, (544), 3 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,073 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,073 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 125 flow. Second operand 3 states and 544 transitions. [2023-09-01 01:27:07,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 53 transitions, 227 flow [2023-09-01 01:27:07,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 53 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:07,075 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 122 flow [2023-09-01 01:27:07,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2023-09-01 01:27:07,076 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-09-01 01:27:07,076 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 122 flow [2023-09-01 01:27:07,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:07,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:27:07,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 01:27:07,077 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:07,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:07,077 INFO L85 PathProgramCache]: Analyzing trace with hash 662230136, now seen corresponding path program 1 times [2023-09-01 01:27:07,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:07,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592047492] [2023-09-01 01:27:07,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:07,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:07,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:07,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:07,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:07,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592047492] [2023-09-01 01:27:07,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592047492] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:07,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:07,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:07,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136571292] [2023-09-01 01:27:07,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:07,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:07,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:07,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:07,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:07,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-09-01 01:27:07,283 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:07,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-09-01 01:27:07,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:07,531 INFO L130 PetriNetUnfolder]: 3069/3716 cut-off events. [2023-09-01 01:27:07,531 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:07,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7502 conditions, 3716 events. 3069/3716 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9294 event pairs, 1503 based on Foata normal form. 0/1882 useless extension candidates. Maximal degree in co-relation 7498. Up to 3716 conditions per place. [2023-09-01 01:27:07,551 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 50 selfloop transitions, 1 changer transitions 0/51 dead transitions. [2023-09-01 01:27:07,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 51 transitions, 220 flow [2023-09-01 01:27:07,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:07,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:07,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-09-01 01:27:07,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5031111111111111 [2023-09-01 01:27:07,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-09-01 01:27:07,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-09-01 01:27:07,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:07,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-09-01 01:27:07,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,559 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 122 flow. Second operand 3 states and 566 transitions. [2023-09-01 01:27:07,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 51 transitions, 220 flow [2023-09-01 01:27:07,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 51 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:07,561 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 119 flow [2023-09-01 01:27:07,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=119, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-09-01 01:27:07,562 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -17 predicate places. [2023-09-01 01:27:07,562 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 119 flow [2023-09-01 01:27:07,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:07,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:07,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 01:27:07,563 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:07,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:07,564 INFO L85 PathProgramCache]: Analyzing trace with hash 748017327, now seen corresponding path program 1 times [2023-09-01 01:27:07,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:07,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76711095] [2023-09-01 01:27:07,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:07,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76711095] [2023-09-01 01:27:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76711095] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:07,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:07,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:07,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956944805] [2023-09-01 01:27:07,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:07,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:07,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:07,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:07,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:07,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-09-01 01:27:07,784 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 119 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:07,785 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:07,785 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-09-01 01:27:07,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:08,018 INFO L130 PetriNetUnfolder]: 3021/3652 cut-off events. [2023-09-01 01:27:08,018 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:08,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7375 conditions, 3652 events. 3021/3652 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9119 event pairs, 1479 based on Foata normal form. 0/1858 useless extension candidates. Maximal degree in co-relation 7371. Up to 3652 conditions per place. [2023-09-01 01:27:08,031 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 48 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2023-09-01 01:27:08,031 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 49 transitions, 213 flow [2023-09-01 01:27:08,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:08,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:08,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 564 transitions. [2023-09-01 01:27:08,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5013333333333333 [2023-09-01 01:27:08,034 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 564 transitions. [2023-09-01 01:27:08,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 564 transitions. [2023-09-01 01:27:08,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:08,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 564 transitions. [2023-09-01 01:27:08,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,039 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 119 flow. Second operand 3 states and 564 transitions. [2023-09-01 01:27:08,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 49 transitions, 213 flow [2023-09-01 01:27:08,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 49 transitions, 212 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:08,040 INFO L231 Difference]: Finished difference. Result has 57 places, 49 transitions, 116 flow [2023-09-01 01:27:08,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=49} [2023-09-01 01:27:08,041 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -18 predicate places. [2023-09-01 01:27:08,041 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 49 transitions, 116 flow [2023-09-01 01:27:08,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:08,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:08,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 01:27:08,042 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:08,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:08,043 INFO L85 PathProgramCache]: Analyzing trace with hash 748017328, now seen corresponding path program 1 times [2023-09-01 01:27:08,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:08,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900275441] [2023-09-01 01:27:08,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:08,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:08,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:08,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900275441] [2023-09-01 01:27:08,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900275441] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:08,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:08,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:08,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505577958] [2023-09-01 01:27:08,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:08,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:08,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:08,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:08,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:08,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-09-01 01:27:08,266 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,266 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:08,267 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-09-01 01:27:08,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:08,476 INFO L130 PetriNetUnfolder]: 2973/3588 cut-off events. [2023-09-01 01:27:08,476 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:08,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7248 conditions, 3588 events. 2973/3588 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8926 event pairs, 1455 based on Foata normal form. 0/1834 useless extension candidates. Maximal degree in co-relation 7244. Up to 3588 conditions per place. [2023-09-01 01:27:08,489 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-09-01 01:27:08,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 47 transitions, 206 flow [2023-09-01 01:27:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:08,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:08,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-09-01 01:27:08,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4782222222222222 [2023-09-01 01:27:08,491 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-09-01 01:27:08,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-09-01 01:27:08,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:08,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-09-01 01:27:08,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,495 INFO L175 Difference]: Start difference. First operand has 57 places, 49 transitions, 116 flow. Second operand 3 states and 538 transitions. [2023-09-01 01:27:08,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 47 transitions, 206 flow [2023-09-01 01:27:08,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 47 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:08,496 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 113 flow [2023-09-01 01:27:08,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=113, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-09-01 01:27:08,497 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -19 predicate places. [2023-09-01 01:27:08,497 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 113 flow [2023-09-01 01:27:08,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:08,498 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:08,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 01:27:08,498 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:08,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:08,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1585127522, now seen corresponding path program 1 times [2023-09-01 01:27:08,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:08,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338990178] [2023-09-01 01:27:08,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:08,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:08,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:08,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:08,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338990178] [2023-09-01 01:27:08,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338990178] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:08,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:08,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:08,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338065471] [2023-09-01 01:27:08,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:08,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:08,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:08,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-09-01 01:27:08,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,621 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:08,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-09-01 01:27:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:08,811 INFO L130 PetriNetUnfolder]: 2901/3496 cut-off events. [2023-09-01 01:27:08,811 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:08,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 3496 events. 2901/3496 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8666 event pairs, 1419 based on Foata normal form. 0/1798 useless extension candidates. Maximal degree in co-relation 7061. Up to 3496 conditions per place. [2023-09-01 01:27:08,826 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 44 selfloop transitions, 1 changer transitions 0/45 dead transitions. [2023-09-01 01:27:08,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 45 transitions, 199 flow [2023-09-01 01:27:08,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:08,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:08,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-09-01 01:27:08,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47644444444444445 [2023-09-01 01:27:08,829 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-09-01 01:27:08,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-09-01 01:27:08,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:08,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-09-01 01:27:08,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,833 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 113 flow. Second operand 3 states and 536 transitions. [2023-09-01 01:27:08,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 45 transitions, 199 flow [2023-09-01 01:27:08,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:08,834 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 110 flow [2023-09-01 01:27:08,834 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2023-09-01 01:27:08,835 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -20 predicate places. [2023-09-01 01:27:08,835 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 110 flow [2023-09-01 01:27:08,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:08,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:08,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:08,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 01:27:08,836 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:08,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:08,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1585127521, now seen corresponding path program 1 times [2023-09-01 01:27:08,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:08,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957866022] [2023-09-01 01:27:08,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:08,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:08,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957866022] [2023-09-01 01:27:08,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957866022] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:08,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:08,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:08,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712601817] [2023-09-01 01:27:08,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:08,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:08,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:08,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:08,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:09,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-09-01 01:27:09,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,039 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:09,039 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-09-01 01:27:09,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:09,224 INFO L130 PetriNetUnfolder]: 2829/3404 cut-off events. [2023-09-01 01:27:09,224 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:09,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6882 conditions, 3404 events. 2829/3404 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 8377 event pairs, 1383 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 6878. Up to 3404 conditions per place. [2023-09-01 01:27:09,239 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 42 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-09-01 01:27:09,240 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 43 transitions, 192 flow [2023-09-01 01:27:09,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:09,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:09,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 558 transitions. [2023-09-01 01:27:09,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2023-09-01 01:27:09,242 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 558 transitions. [2023-09-01 01:27:09,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 558 transitions. [2023-09-01 01:27:09,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:09,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 558 transitions. [2023-09-01 01:27:09,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,246 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,246 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 110 flow. Second operand 3 states and 558 transitions. [2023-09-01 01:27:09,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 43 transitions, 192 flow [2023-09-01 01:27:09,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 191 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:09,248 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 107 flow [2023-09-01 01:27:09,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-09-01 01:27:09,249 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-09-01 01:27:09,249 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 107 flow [2023-09-01 01:27:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:09,249 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:09,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 01:27:09,250 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:09,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:09,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1405827802, now seen corresponding path program 1 times [2023-09-01 01:27:09,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:09,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96011701] [2023-09-01 01:27:09,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:09,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:09,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:09,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:09,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96011701] [2023-09-01 01:27:09,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96011701] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:09,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:09,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:09,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099916436] [2023-09-01 01:27:09,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:09,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:09,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:09,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:09,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:09,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 375 [2023-09-01 01:27:09,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:09,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 375 [2023-09-01 01:27:09,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:09,552 INFO L130 PetriNetUnfolder]: 2667/3208 cut-off events. [2023-09-01 01:27:09,553 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:09,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6491 conditions, 3208 events. 2667/3208 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 7778 event pairs, 1302 based on Foata normal form. 0/1681 useless extension candidates. Maximal degree in co-relation 6487. Up to 3208 conditions per place. [2023-09-01 01:27:09,564 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 40 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-09-01 01:27:09,565 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 185 flow [2023-09-01 01:27:09,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:09,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 532 transitions. [2023-09-01 01:27:09,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4728888888888889 [2023-09-01 01:27:09,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 532 transitions. [2023-09-01 01:27:09,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 532 transitions. [2023-09-01 01:27:09,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:09,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 532 transitions. [2023-09-01 01:27:09,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.33333333333334) internal successors, (532), 3 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,571 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,571 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 107 flow. Second operand 3 states and 532 transitions. [2023-09-01 01:27:09,571 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 185 flow [2023-09-01 01:27:09,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 184 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:09,572 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 104 flow [2023-09-01 01:27:09,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-09-01 01:27:09,573 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -22 predicate places. [2023-09-01 01:27:09,573 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 104 flow [2023-09-01 01:27:09,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:09,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:09,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 01:27:09,574 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:09,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:09,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1405827801, now seen corresponding path program 1 times [2023-09-01 01:27:09,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:09,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163557719] [2023-09-01 01:27:09,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:09,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:09,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:09,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:09,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163557719] [2023-09-01 01:27:09,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163557719] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:09,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656086318] [2023-09-01 01:27:09,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:09,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:09,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 375 [2023-09-01 01:27:09,699 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:09,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 375 [2023-09-01 01:27:09,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:09,866 INFO L130 PetriNetUnfolder]: 2505/3012 cut-off events. [2023-09-01 01:27:09,866 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:09,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6100 conditions, 3012 events. 2505/3012 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7211 event pairs, 1221 based on Foata normal form. 0/1600 useless extension candidates. Maximal degree in co-relation 6096. Up to 3012 conditions per place. [2023-09-01 01:27:09,880 INFO L137 encePairwiseOnDemand]: 372/375 looper letters, 38 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-09-01 01:27:09,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 178 flow [2023-09-01 01:27:09,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:09,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:09,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-09-01 01:27:09,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49244444444444446 [2023-09-01 01:27:09,883 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-09-01 01:27:09,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-09-01 01:27:09,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:09,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-09-01 01:27:09,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,886 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,886 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 104 flow. Second operand 3 states and 554 transitions. [2023-09-01 01:27:09,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 178 flow [2023-09-01 01:27:09,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:09,888 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 101 flow [2023-09-01 01:27:09,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-09-01 01:27:09,888 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-09-01 01:27:09,889 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 101 flow [2023-09-01 01:27:09,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:09,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:09,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:09,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 01:27:09,889 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:09,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:09,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1914195271, now seen corresponding path program 1 times [2023-09-01 01:27:09,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:09,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894518443] [2023-09-01 01:27:09,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:09,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:10,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:10,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:10,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894518443] [2023-09-01 01:27:10,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894518443] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:10,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:10,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 01:27:10,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557626729] [2023-09-01 01:27:10,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:10,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 01:27:10,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:10,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 01:27:10,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-09-01 01:27:10,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 375 [2023-09-01 01:27:10,821 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 101 flow. Second operand has 7 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:10,821 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:10,821 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 375 [2023-09-01 01:27:10,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:11,003 INFO L130 PetriNetUnfolder]: 2121/2564 cut-off events. [2023-09-01 01:27:11,003 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:11,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5205 conditions, 2564 events. 2121/2564 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5934 event pairs, 1029 based on Foata normal form. 0/1408 useless extension candidates. Maximal degree in co-relation 5201. Up to 2564 conditions per place. [2023-09-01 01:27:11,016 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-09-01 01:27:11,017 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 38 transitions, 175 flow [2023-09-01 01:27:11,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 01:27:11,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432 [2023-09-01 01:27:11,019 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 01:27:11,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 01:27:11,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:11,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 01:27:11,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,023 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,023 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 101 flow. Second operand 3 states and 486 transitions. [2023-09-01 01:27:11,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 38 transitions, 175 flow [2023-09-01 01:27:11,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 38 transitions, 174 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:11,024 INFO L231 Difference]: Finished difference. Result has 52 places, 38 transitions, 100 flow [2023-09-01 01:27:11,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=38} [2023-09-01 01:27:11,026 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-09-01 01:27:11,026 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 38 transitions, 100 flow [2023-09-01 01:27:11,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 150.85714285714286) internal successors, (1056), 7 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:11,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:11,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 01:27:11,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:11,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:11,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1914195270, now seen corresponding path program 1 times [2023-09-01 01:27:11,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:11,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546714779] [2023-09-01 01:27:11,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:11,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:11,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:11,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546714779] [2023-09-01 01:27:11,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546714779] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:11,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:11,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 01:27:11,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246141877] [2023-09-01 01:27:11,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:11,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 01:27:11,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:11,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 01:27:11,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-09-01 01:27:11,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 375 [2023-09-01 01:27:11,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 38 transitions, 100 flow. Second operand has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:11,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 375 [2023-09-01 01:27:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:11,590 INFO L130 PetriNetUnfolder]: 1737/2116 cut-off events. [2023-09-01 01:27:11,591 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:11,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4310 conditions, 2116 events. 1737/2116 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 4759 event pairs, 837 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 4306. Up to 2116 conditions per place. [2023-09-01 01:27:11,599 INFO L137 encePairwiseOnDemand]: 373/375 looper letters, 36 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-09-01 01:27:11,599 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 37 transitions, 172 flow [2023-09-01 01:27:11,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:11,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:11,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-09-01 01:27:11,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151111111111111 [2023-09-01 01:27:11,601 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-09-01 01:27:11,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-09-01 01:27:11,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:11,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-09-01 01:27:11,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,605 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,605 INFO L175 Difference]: Start difference. First operand has 52 places, 38 transitions, 100 flow. Second operand 3 states and 467 transitions. [2023-09-01 01:27:11,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 37 transitions, 172 flow [2023-09-01 01:27:11,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 37 transitions, 171 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:11,606 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 99 flow [2023-09-01 01:27:11,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-09-01 01:27:11,607 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -23 predicate places. [2023-09-01 01:27:11,607 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 99 flow [2023-09-01 01:27:11,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 144.625) internal successors, (1157), 8 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:11,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:11,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:11,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 01:27:11,608 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:11,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:11,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1925165654, now seen corresponding path program 1 times [2023-09-01 01:27:11,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:11,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653276931] [2023-09-01 01:27:11,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:11,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:11,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:11,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:11,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653276931] [2023-09-01 01:27:11,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653276931] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:11,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:11,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:27:11,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782410805] [2023-09-01 01:27:11,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:11,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:27:11,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:11,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:27:11,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:27:12,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 375 [2023-09-01 01:27:12,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:12,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 375 [2023-09-01 01:27:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:12,378 INFO L130 PetriNetUnfolder]: 3473/4229 cut-off events. [2023-09-01 01:27:12,378 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 01:27:12,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8599 conditions, 4229 events. 3473/4229 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11643 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 8595. Up to 3015 conditions per place. [2023-09-01 01:27:12,401 INFO L137 encePairwiseOnDemand]: 367/375 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-09-01 01:27:12,401 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 71 transitions, 320 flow [2023-09-01 01:27:12,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:27:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:27:12,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 546 transitions. [2023-09-01 01:27:12,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48533333333333334 [2023-09-01 01:27:12,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 546 transitions. [2023-09-01 01:27:12,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 546 transitions. [2023-09-01 01:27:12,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:12,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 546 transitions. [2023-09-01 01:27:12,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,407 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,407 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 99 flow. Second operand 3 states and 546 transitions. [2023-09-01 01:27:12,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 71 transitions, 320 flow [2023-09-01 01:27:12,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 71 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:12,410 INFO L231 Difference]: Finished difference. Result has 54 places, 43 transitions, 145 flow [2023-09-01 01:27:12,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=145, PETRI_PLACES=54, PETRI_TRANSITIONS=43} [2023-09-01 01:27:12,411 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -21 predicate places. [2023-09-01 01:27:12,411 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 43 transitions, 145 flow [2023-09-01 01:27:12,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:12,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:12,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 01:27:12,412 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:12,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:12,413 INFO L85 PathProgramCache]: Analyzing trace with hash 239588318, now seen corresponding path program 1 times [2023-09-01 01:27:12,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:12,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668386411] [2023-09-01 01:27:12,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:12,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:12,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:12,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:12,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:12,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668386411] [2023-09-01 01:27:12,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668386411] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:12,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:12,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:12,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596452052] [2023-09-01 01:27:12,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:12,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:12,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:12,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:12,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:12,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:12,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 43 transitions, 145 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:12,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:12,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:12,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:13,191 INFO L130 PetriNetUnfolder]: 5067/6189 cut-off events. [2023-09-01 01:27:13,192 INFO L131 PetriNetUnfolder]: For 2240/2240 co-relation queries the response was YES. [2023-09-01 01:27:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15985 conditions, 6189 events. 5067/6189 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19210 event pairs, 259 based on Foata normal form. 122/6311 useless extension candidates. Maximal degree in co-relation 15980. Up to 3157 conditions per place. [2023-09-01 01:27:13,229 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 116 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-09-01 01:27:13,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 126 transitions, 633 flow [2023-09-01 01:27:13,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-09-01 01:27:13,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992 [2023-09-01 01:27:13,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-09-01 01:27:13,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-09-01 01:27:13,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:13,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-09-01 01:27:13,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 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) [2023-09-01 01:27:13,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:13,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:13,240 INFO L175 Difference]: Start difference. First operand has 54 places, 43 transitions, 145 flow. Second operand 5 states and 936 transitions. [2023-09-01 01:27:13,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 126 transitions, 633 flow [2023-09-01 01:27:13,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 126 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:13,244 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 203 flow [2023-09-01 01:27:13,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=203, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-09-01 01:27:13,246 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -16 predicate places. [2023-09-01 01:27:13,246 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 203 flow [2023-09-01 01:27:13,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:13,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:13,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:13,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 01:27:13,247 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:13,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:13,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1889108753, now seen corresponding path program 1 times [2023-09-01 01:27:13,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:13,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765931864] [2023-09-01 01:27:13,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:13,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:13,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:13,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765931864] [2023-09-01 01:27:13,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765931864] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:13,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:13,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:13,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623284612] [2023-09-01 01:27:13,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:13,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:13,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:13,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:13,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:13,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:13,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 203 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:13,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:13,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:13,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:13,996 INFO L130 PetriNetUnfolder]: 4881/6003 cut-off events. [2023-09-01 01:27:13,997 INFO L131 PetriNetUnfolder]: For 4584/4584 co-relation queries the response was YES. [2023-09-01 01:27:14,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16730 conditions, 6003 events. 4881/6003 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 18836 event pairs, 259 based on Foata normal form. 186/6189 useless extension candidates. Maximal degree in co-relation 16723. Up to 3157 conditions per place. [2023-09-01 01:27:14,032 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-09-01 01:27:14,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 654 flow [2023-09-01 01:27:14,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:14,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:14,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 935 transitions. [2023-09-01 01:27:14,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49866666666666665 [2023-09-01 01:27:14,036 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 935 transitions. [2023-09-01 01:27:14,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 935 transitions. [2023-09-01 01:27:14,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:14,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 935 transitions. [2023-09-01 01:27:14,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:14,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:14,041 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:14,041 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 203 flow. Second operand 5 states and 935 transitions. [2023-09-01 01:27:14,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 654 flow [2023-09-01 01:27:14,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 124 transitions, 654 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:27:14,050 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 217 flow [2023-09-01 01:27:14,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-09-01 01:27:14,051 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-09-01 01:27:14,051 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 217 flow [2023-09-01 01:27:14,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:14,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:14,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:14,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 01:27:14,052 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:14,052 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:14,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2041789992, now seen corresponding path program 2 times [2023-09-01 01:27:14,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:14,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190124573] [2023-09-01 01:27:14,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:14,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:14,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:14,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:14,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190124573] [2023-09-01 01:27:14,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190124573] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 01:27:14,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1166386732] [2023-09-01 01:27:14,215 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:27:14,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:14,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:27:14,221 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) [2023-09-01 01:27:14,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 01:27:14,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:27:14,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:27:14,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 01:27:14,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:27:14,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:14,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:27:14,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:14,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1166386732] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:27:14,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 01:27:14,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 01:27:14,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989634465] [2023-09-01 01:27:14,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 01:27:14,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:27:14,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:14,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:27:14,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:27:14,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:14,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 217 flow. Second operand has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:14,855 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:14,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:14,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:15,415 INFO L130 PetriNetUnfolder]: 5649/6927 cut-off events. [2023-09-01 01:27:15,416 INFO L131 PetriNetUnfolder]: For 8468/8468 co-relation queries the response was YES. [2023-09-01 01:27:15,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20577 conditions, 6927 events. 5649/6927 cut-off events. For 8468/8468 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21185 event pairs, 1803 based on Foata normal form. 156/7083 useless extension candidates. Maximal degree in co-relation 20569. Up to 3643 conditions per place. [2023-09-01 01:27:15,463 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 114 selfloop transitions, 8 changer transitions 0/122 dead transitions. [2023-09-01 01:27:15,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 122 transitions, 674 flow [2023-09-01 01:27:15,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:15,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 936 transitions. [2023-09-01 01:27:15,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4992 [2023-09-01 01:27:15,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 936 transitions. [2023-09-01 01:27:15,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 936 transitions. [2023-09-01 01:27:15,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:15,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 936 transitions. [2023-09-01 01:27:15,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.2) internal successors, (936), 5 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) [2023-09-01 01:27:15,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:15,472 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:15,472 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 217 flow. Second operand 5 states and 936 transitions. [2023-09-01 01:27:15,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 122 transitions, 674 flow [2023-09-01 01:27:15,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 122 transitions, 667 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:15,479 INFO L231 Difference]: Finished difference. Result has 69 places, 52 transitions, 260 flow [2023-09-01 01:27:15,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=260, PETRI_PLACES=69, PETRI_TRANSITIONS=52} [2023-09-01 01:27:15,479 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-09-01 01:27:15,480 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 52 transitions, 260 flow [2023-09-01 01:27:15,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:15,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:15,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:15,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 01:27:15,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 01:27:15,688 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:15,689 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:15,689 INFO L85 PathProgramCache]: Analyzing trace with hash -531288503, now seen corresponding path program 1 times [2023-09-01 01:27:15,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:15,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694317501] [2023-09-01 01:27:15,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:15,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:15,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:15,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694317501] [2023-09-01 01:27:15,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694317501] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 01:27:15,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484954420] [2023-09-01 01:27:15,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:15,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:15,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:27:15,858 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) [2023-09-01 01:27:15,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 01:27:16,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:16,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 01:27:16,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:27:16,286 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:16,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:27:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:16,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484954420] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:27:16,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 01:27:16,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 01:27:16,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934733342] [2023-09-01 01:27:16,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 01:27:16,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:27:16,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:27:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:27:16,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:16,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 52 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:16,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:16,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:16,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:17,647 INFO L130 PetriNetUnfolder]: 13057/16015 cut-off events. [2023-09-01 01:27:17,647 INFO L131 PetriNetUnfolder]: For 28097/28097 co-relation queries the response was YES. [2023-09-01 01:27:17,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51310 conditions, 16015 events. 13057/16015 cut-off events. For 28097/28097 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 57620 event pairs, 2873 based on Foata normal form. 408/16423 useless extension candidates. Maximal degree in co-relation 51299. Up to 6947 conditions per place. [2023-09-01 01:27:17,768 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 150 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2023-09-01 01:27:17,768 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 158 transitions, 1094 flow [2023-09-01 01:27:17,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 938 transitions. [2023-09-01 01:27:17,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5002666666666666 [2023-09-01 01:27:17,771 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 938 transitions. [2023-09-01 01:27:17,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 938 transitions. [2023-09-01 01:27:17,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:17,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 938 transitions. [2023-09-01 01:27:17,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 187.6) internal successors, (938), 5 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:17,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:17,776 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:17,776 INFO L175 Difference]: Start difference. First operand has 69 places, 52 transitions, 260 flow. Second operand 5 states and 938 transitions. [2023-09-01 01:27:17,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 158 transitions, 1094 flow [2023-09-01 01:27:17,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 158 transitions, 1067 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:17,798 INFO L231 Difference]: Finished difference. Result has 75 places, 57 transitions, 306 flow [2023-09-01 01:27:17,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=306, PETRI_PLACES=75, PETRI_TRANSITIONS=57} [2023-09-01 01:27:17,798 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-09-01 01:27:17,798 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 57 transitions, 306 flow [2023-09-01 01:27:17,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 171.5) internal successors, (1029), 6 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:17,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:17,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:17,811 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 01:27:18,005 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,SelfDestructingSolverStorable17 [2023-09-01 01:27:18,005 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:18,006 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:18,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1330698981, now seen corresponding path program 2 times [2023-09-01 01:27:18,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:18,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695155037] [2023-09-01 01:27:18,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:18,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:18,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:18,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:18,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695155037] [2023-09-01 01:27:18,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695155037] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:18,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:18,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:18,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514748768] [2023-09-01 01:27:18,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:18,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:18,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:18,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:18,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:18,280 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:18,281 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 57 transitions, 306 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:18,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:18,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:18,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:19,249 INFO L130 PetriNetUnfolder]: 11213/13735 cut-off events. [2023-09-01 01:27:19,250 INFO L131 PetriNetUnfolder]: For 26985/26985 co-relation queries the response was YES. [2023-09-01 01:27:19,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50244 conditions, 13735 events. 11213/13735 cut-off events. For 26985/26985 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 49284 event pairs, 471 based on Foata normal form. 268/14003 useless extension candidates. Maximal degree in co-relation 50229. Up to 5849 conditions per place. [2023-09-01 01:27:19,339 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 150 selfloop transitions, 11 changer transitions 0/161 dead transitions. [2023-09-01 01:27:19,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 161 transitions, 1160 flow [2023-09-01 01:27:19,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:19,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:19,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-09-01 01:27:19,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706666666666666 [2023-09-01 01:27:19,343 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-09-01 01:27:19,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-09-01 01:27:19,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:19,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-09-01 01:27:19,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:19,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:19,347 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:19,347 INFO L175 Difference]: Start difference. First operand has 75 places, 57 transitions, 306 flow. Second operand 5 states and 932 transitions. [2023-09-01 01:27:19,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 161 transitions, 1160 flow [2023-09-01 01:27:19,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 161 transitions, 1160 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:27:19,418 INFO L231 Difference]: Finished difference. Result has 80 places, 62 transitions, 367 flow [2023-09-01 01:27:19,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=367, PETRI_PLACES=80, PETRI_TRANSITIONS=62} [2023-09-01 01:27:19,418 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-09-01 01:27:19,419 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 62 transitions, 367 flow [2023-09-01 01:27:19,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:19,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:19,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:19,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 01:27:19,420 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:19,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:19,421 INFO L85 PathProgramCache]: Analyzing trace with hash 101620716, now seen corresponding path program 1 times [2023-09-01 01:27:19,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:19,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880469317] [2023-09-01 01:27:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:19,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:19,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:19,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:19,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880469317] [2023-09-01 01:27:19,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880469317] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 01:27:19,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632224233] [2023-09-01 01:27:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:19,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:19,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:27:19,577 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) [2023-09-01 01:27:19,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 01:27:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:19,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 01:27:19,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:27:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:19,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:27:19,893 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:19,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632224233] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:27:19,893 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 01:27:19,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 01:27:19,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38630971] [2023-09-01 01:27:19,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 01:27:19,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:27:19,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:19,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:27:19,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:27:19,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:19,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 62 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:19,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:19,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:19,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:22,660 INFO L130 PetriNetUnfolder]: 24977/30573 cut-off events. [2023-09-01 01:27:22,660 INFO L131 PetriNetUnfolder]: For 83473/83473 co-relation queries the response was YES. [2023-09-01 01:27:22,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120244 conditions, 30573 events. 24977/30573 cut-off events. For 83473/83473 co-relation queries the response was YES. Maximal size of possible extension queue 815. Compared 119072 event pairs, 4643 based on Foata normal form. 744/31317 useless extension candidates. Maximal degree in co-relation 120227. Up to 13750 conditions per place. [2023-09-01 01:27:22,896 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-09-01 01:27:22,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 187 transitions, 1485 flow [2023-09-01 01:27:22,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 930 transitions. [2023-09-01 01:27:22,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.496 [2023-09-01 01:27:22,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 930 transitions. [2023-09-01 01:27:22,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 930 transitions. [2023-09-01 01:27:22,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:22,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 930 transitions. [2023-09-01 01:27:22,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:22,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:22,906 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:22,906 INFO L175 Difference]: Start difference. First operand has 80 places, 62 transitions, 367 flow. Second operand 5 states and 930 transitions. [2023-09-01 01:27:22,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 187 transitions, 1485 flow [2023-09-01 01:27:22,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 187 transitions, 1445 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:22,966 INFO L231 Difference]: Finished difference. Result has 86 places, 67 transitions, 409 flow [2023-09-01 01:27:22,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=86, PETRI_TRANSITIONS=67} [2023-09-01 01:27:22,966 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 11 predicate places. [2023-09-01 01:27:22,966 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 67 transitions, 409 flow [2023-09-01 01:27:22,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 172.16666666666666) internal successors, (1033), 6 states have internal predecessors, (1033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:22,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:22,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:22,976 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 01:27:23,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:23,174 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:23,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:23,174 INFO L85 PathProgramCache]: Analyzing trace with hash 177155077, now seen corresponding path program 1 times [2023-09-01 01:27:23,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:23,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614582160] [2023-09-01 01:27:23,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:23,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:23,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:23,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:23,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614582160] [2023-09-01 01:27:23,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614582160] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:23,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:23,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:23,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250156856] [2023-09-01 01:27:23,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:23,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:23,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:23,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:23,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:23,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 67 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:23,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:23,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:23,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:25,655 INFO L130 PetriNetUnfolder]: 24421/30017 cut-off events. [2023-09-01 01:27:25,655 INFO L131 PetriNetUnfolder]: For 83252/83252 co-relation queries the response was YES. [2023-09-01 01:27:25,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129152 conditions, 30017 events. 24421/30017 cut-off events. For 83252/83252 co-relation queries the response was YES. Maximal size of possible extension queue 813. Compared 123314 event pairs, 1147 based on Foata normal form. 556/30573 useless extension candidates. Maximal degree in co-relation 129131. Up to 13317 conditions per place. [2023-09-01 01:27:25,975 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 171 selfloop transitions, 8 changer transitions 0/179 dead transitions. [2023-09-01 01:27:25,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 179 transitions, 1399 flow [2023-09-01 01:27:25,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:25,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 931 transitions. [2023-09-01 01:27:25,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965333333333333 [2023-09-01 01:27:25,978 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 931 transitions. [2023-09-01 01:27:25,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 931 transitions. [2023-09-01 01:27:25,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:25,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 931 transitions. [2023-09-01 01:27:25,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.2) internal successors, (931), 5 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:25,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:25,983 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:25,984 INFO L175 Difference]: Start difference. First operand has 86 places, 67 transitions, 409 flow. Second operand 5 states and 931 transitions. [2023-09-01 01:27:25,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 179 transitions, 1399 flow [2023-09-01 01:27:26,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 179 transitions, 1399 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:27:26,220 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 425 flow [2023-09-01 01:27:26,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=393, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=425, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2023-09-01 01:27:26,222 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 16 predicate places. [2023-09-01 01:27:26,222 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 425 flow [2023-09-01 01:27:26,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:26,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:26,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:26,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 01:27:26,223 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:26,223 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:26,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1816048060, now seen corresponding path program 2 times [2023-09-01 01:27:26,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:26,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568339861] [2023-09-01 01:27:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:26,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:26,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:26,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568339861] [2023-09-01 01:27:26,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568339861] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:26,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:26,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:26,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490405558] [2023-09-01 01:27:26,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:26,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:26,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:26,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:26,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:26,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:26,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 425 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:26,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:26,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:26,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:28,363 INFO L130 PetriNetUnfolder]: 21381/26225 cut-off events. [2023-09-01 01:27:28,363 INFO L131 PetriNetUnfolder]: For 88092/88092 co-relation queries the response was YES. [2023-09-01 01:27:28,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116759 conditions, 26225 events. 21381/26225 cut-off events. For 88092/88092 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101291 event pairs, 1383 based on Foata normal form. 368/26593 useless extension candidates. Maximal degree in co-relation 116737. Up to 11386 conditions per place. [2023-09-01 01:27:28,514 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 182 selfloop transitions, 11 changer transitions 0/193 dead transitions. [2023-09-01 01:27:28,514 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 193 transitions, 1632 flow [2023-09-01 01:27:28,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:28,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:28,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-09-01 01:27:28,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493333333333334 [2023-09-01 01:27:28,518 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-09-01 01:27:28,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-09-01 01:27:28,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:28,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-09-01 01:27:28,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:28,523 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:28,523 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 425 flow. Second operand 5 states and 928 transitions. [2023-09-01 01:27:28,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 193 transitions, 1632 flow [2023-09-01 01:27:28,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 193 transitions, 1595 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:28,766 INFO L231 Difference]: Finished difference. Result has 95 places, 71 transitions, 475 flow [2023-09-01 01:27:28,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=475, PETRI_PLACES=95, PETRI_TRANSITIONS=71} [2023-09-01 01:27:28,766 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 20 predicate places. [2023-09-01 01:27:28,766 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 71 transitions, 475 flow [2023-09-01 01:27:28,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:28,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:28,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:28,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 01:27:28,767 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:28,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:28,767 INFO L85 PathProgramCache]: Analyzing trace with hash 403887824, now seen corresponding path program 1 times [2023-09-01 01:27:28,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:28,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998913981] [2023-09-01 01:27:28,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:28,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:28,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:28,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:28,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:28,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998913981] [2023-09-01 01:27:28,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998913981] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:28,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:28,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:28,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782701189] [2023-09-01 01:27:28,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:28,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:28,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:28,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:28,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:28,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:28,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 71 transitions, 475 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:28,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:28,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:28,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:30,935 INFO L130 PetriNetUnfolder]: 21005/25849 cut-off events. [2023-09-01 01:27:30,935 INFO L131 PetriNetUnfolder]: For 84905/84905 co-relation queries the response was YES. [2023-09-01 01:27:31,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120017 conditions, 25849 events. 21005/25849 cut-off events. For 84905/84905 co-relation queries the response was YES. Maximal size of possible extension queue 681. Compared 101379 event pairs, 1383 based on Foata normal form. 376/26225 useless extension candidates. Maximal degree in co-relation 119993. Up to 11497 conditions per place. [2023-09-01 01:27:31,256 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 183 selfloop transitions, 8 changer transitions 0/191 dead transitions. [2023-09-01 01:27:31,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 191 transitions, 1608 flow [2023-09-01 01:27:31,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:31,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:31,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 927 transitions. [2023-09-01 01:27:31,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4944 [2023-09-01 01:27:31,263 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 927 transitions. [2023-09-01 01:27:31,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 927 transitions. [2023-09-01 01:27:31,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:31,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 927 transitions. [2023-09-01 01:27:31,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.4) internal successors, (927), 5 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:31,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:31,275 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:31,276 INFO L175 Difference]: Start difference. First operand has 95 places, 71 transitions, 475 flow. Second operand 5 states and 927 transitions. [2023-09-01 01:27:31,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 191 transitions, 1608 flow [2023-09-01 01:27:31,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 191 transitions, 1597 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:31,505 INFO L231 Difference]: Finished difference. Result has 99 places, 70 transitions, 478 flow [2023-09-01 01:27:31,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=446, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=478, PETRI_PLACES=99, PETRI_TRANSITIONS=70} [2023-09-01 01:27:31,505 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 24 predicate places. [2023-09-01 01:27:31,506 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 70 transitions, 478 flow [2023-09-01 01:27:31,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:31,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:31,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:31,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 01:27:31,506 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:31,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:31,507 INFO L85 PathProgramCache]: Analyzing trace with hash 986963724, now seen corresponding path program 2 times [2023-09-01 01:27:31,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:31,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697830610] [2023-09-01 01:27:31,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:31,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:31,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:31,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697830610] [2023-09-01 01:27:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697830610] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847502439] [2023-09-01 01:27:31,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:31,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:31,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:31,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:31,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:31,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:31,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 70 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:31,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:31,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:31,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:33,779 INFO L130 PetriNetUnfolder]: 24413/29993 cut-off events. [2023-09-01 01:27:33,779 INFO L131 PetriNetUnfolder]: For 100335/100335 co-relation queries the response was YES. [2023-09-01 01:27:33,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141555 conditions, 29993 events. 24413/29993 cut-off events. For 100335/100335 co-relation queries the response was YES. Maximal size of possible extension queue 758. Compared 116774 event pairs, 4471 based on Foata normal form. 736/30729 useless extension candidates. Maximal degree in co-relation 141530. Up to 16033 conditions per place. [2023-09-01 01:27:34,064 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 177 selfloop transitions, 8 changer transitions 0/185 dead transitions. [2023-09-01 01:27:34,064 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 185 transitions, 1572 flow [2023-09-01 01:27:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:34,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 924 transitions. [2023-09-01 01:27:34,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4928 [2023-09-01 01:27:34,067 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 924 transitions. [2023-09-01 01:27:34,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 924 transitions. [2023-09-01 01:27:34,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:34,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 924 transitions. [2023-09-01 01:27:34,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 184.8) internal successors, (924), 5 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:34,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:34,073 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:34,073 INFO L175 Difference]: Start difference. First operand has 99 places, 70 transitions, 478 flow. Second operand 5 states and 924 transitions. [2023-09-01 01:27:34,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 185 transitions, 1572 flow [2023-09-01 01:27:34,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 185 transitions, 1559 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-09-01 01:27:34,300 INFO L231 Difference]: Finished difference. Result has 104 places, 73 transitions, 518 flow [2023-09-01 01:27:34,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=518, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2023-09-01 01:27:34,301 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 29 predicate places. [2023-09-01 01:27:34,301 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 518 flow [2023-09-01 01:27:34,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:34,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:34,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:34,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 01:27:34,302 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:34,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:34,303 INFO L85 PathProgramCache]: Analyzing trace with hash 715762403, now seen corresponding path program 2 times [2023-09-01 01:27:34,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:34,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058169132] [2023-09-01 01:27:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:34,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:34,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:34,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:34,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058169132] [2023-09-01 01:27:34,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058169132] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:27:34,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:27:34,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:27:34,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016076676] [2023-09-01 01:27:34,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:27:34,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:27:34,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:34,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:27:34,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:27:34,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:34,506 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 518 flow. Second operand has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:34,506 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:34,506 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:34,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:37,331 INFO L130 PetriNetUnfolder]: 29277/35873 cut-off events. [2023-09-01 01:27:37,331 INFO L131 PetriNetUnfolder]: For 127692/127692 co-relation queries the response was YES. [2023-09-01 01:27:37,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174642 conditions, 35873 events. 29277/35873 cut-off events. For 127692/127692 co-relation queries the response was YES. Maximal size of possible extension queue 868. Compared 145071 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 174614. Up to 20069 conditions per place. [2023-09-01 01:27:37,719 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-09-01 01:27:37,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 201 transitions, 1784 flow [2023-09-01 01:27:37,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:37,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:37,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 928 transitions. [2023-09-01 01:27:37,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49493333333333334 [2023-09-01 01:27:37,723 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 928 transitions. [2023-09-01 01:27:37,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 928 transitions. [2023-09-01 01:27:37,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:37,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 928 transitions. [2023-09-01 01:27:37,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.6) internal successors, (928), 5 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:37,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:37,728 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:37,729 INFO L175 Difference]: Start difference. First operand has 104 places, 73 transitions, 518 flow. Second operand 5 states and 928 transitions. [2023-09-01 01:27:37,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 201 transitions, 1784 flow [2023-09-01 01:27:38,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 201 transitions, 1706 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-09-01 01:27:38,101 INFO L231 Difference]: Finished difference. Result has 108 places, 76 transitions, 545 flow [2023-09-01 01:27:38,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=545, PETRI_PLACES=108, PETRI_TRANSITIONS=76} [2023-09-01 01:27:38,101 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 33 predicate places. [2023-09-01 01:27:38,101 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 76 transitions, 545 flow [2023-09-01 01:27:38,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:38,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:38,102 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:38,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 01:27:38,102 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:38,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:38,102 INFO L85 PathProgramCache]: Analyzing trace with hash -26381283, now seen corresponding path program 2 times [2023-09-01 01:27:38,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:38,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038792570] [2023-09-01 01:27:38,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:38,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:38,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:38,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:38,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038792570] [2023-09-01 01:27:38,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038792570] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 01:27:38,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145629409] [2023-09-01 01:27:38,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 01:27:38,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:38,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:27:38,264 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) [2023-09-01 01:27:38,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 01:27:38,479 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 01:27:38,479 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 01:27:38,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 7 conjunts are in the unsatisfiable core [2023-09-01 01:27:38,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:27:38,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:38,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:27:38,629 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:38,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145629409] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 01:27:38,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 01:27:38,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-09-01 01:27:38,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361292975] [2023-09-01 01:27:38,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 01:27:38,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 01:27:38,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:27:38,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 01:27:38,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 01:27:38,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 375 [2023-09-01 01:27:38,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 76 transitions, 545 flow. Second operand has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:38,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:27:38,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 375 [2023-09-01 01:27:38,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:27:41,934 INFO L130 PetriNetUnfolder]: 33421/40853 cut-off events. [2023-09-01 01:27:41,935 INFO L131 PetriNetUnfolder]: For 168727/168727 co-relation queries the response was YES. [2023-09-01 01:27:42,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204056 conditions, 40853 events. 33421/40853 cut-off events. For 168727/168727 co-relation queries the response was YES. Maximal size of possible extension queue 982. Compared 162586 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 204026. Up to 23061 conditions per place. [2023-09-01 01:27:42,321 INFO L137 encePairwiseOnDemand]: 370/375 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-09-01 01:27:42,322 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 217 transitions, 1917 flow [2023-09-01 01:27:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 01:27:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 01:27:42,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-09-01 01:27:42,325 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49706666666666666 [2023-09-01 01:27:42,325 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-09-01 01:27:42,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-09-01 01:27:42,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:27:42,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-09-01 01:27:42,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:42,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:42,330 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 375.0) internal successors, (2250), 6 states have internal predecessors, (2250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:42,331 INFO L175 Difference]: Start difference. First operand has 108 places, 76 transitions, 545 flow. Second operand 5 states and 932 transitions. [2023-09-01 01:27:42,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 217 transitions, 1917 flow [2023-09-01 01:27:42,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 217 transitions, 1839 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-09-01 01:27:42,786 INFO L231 Difference]: Finished difference. Result has 112 places, 79 transitions, 578 flow [2023-09-01 01:27:42,786 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=112, PETRI_TRANSITIONS=79} [2023-09-01 01:27:42,787 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 37 predicate places. [2023-09-01 01:27:42,787 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 79 transitions, 578 flow [2023-09-01 01:27:42,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 170.83333333333334) internal successors, (1025), 6 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:27:42,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:27:42,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:27:42,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 01:27:42,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 01:27:42,989 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 29 more)] === [2023-09-01 01:27:42,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:27:42,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1123184957, now seen corresponding path program 1 times [2023-09-01 01:27:42,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:27:42,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750469846] [2023-09-01 01:27:42,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:42,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:27:43,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:43,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:27:43,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:27:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750469846] [2023-09-01 01:27:43,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750469846] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 01:27:43,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763792554] [2023-09-01 01:27:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:27:43,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 01:27:43,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:27:43,869 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) [2023-09-01 01:27:43,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 01:27:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:27:44,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 18 conjunts are in the unsatisfiable core [2023-09-01 01:27:44,147 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 01:28:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:28:08,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 01:31:31,303 WARN L222 SmtUtils]: Spent 3.26m on a formula simplification. DAG size of input: 3055 DAG size of output: 3017 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Killed by 15