./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i --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/goblint-regression/09-regions_04-list2_nr.i -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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --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 00:08:38,599 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:08:38,601 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:08:38,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:08:38,642 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:08:38,645 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:08:38,647 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:08:38,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:08:38,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:08:38,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:08:38,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:08:38,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:08:38,660 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:08:38,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:08:38,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:08:38,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:08:38,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:08:38,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:08:38,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:08:38,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:08:38,678 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:08:38,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:08:38,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:08:38,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:08:38,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:08:38,699 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:08:38,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:08:38,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:08:38,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:08:38,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:08:38,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:08:38,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:08:38,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:08:38,703 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:08:38,704 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:08:38,704 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:08:38,705 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:08:38,705 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:08:38,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:08:38,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:08:38,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:08:38,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:08:38,747 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:08:38,747 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:08:38,748 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:08:38,749 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:08:38,750 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:08:38,750 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:08:38,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:08:38,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:08:38,751 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:08:38,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:08:38,752 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:08:38,752 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:08:38,753 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:08:38,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:08:38,754 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:08:38,754 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:08:38,754 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:08:38,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:08:38,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:08:38,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:08:38,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:08:38,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:08:38,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:08:38,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:08:38,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:08:38,756 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:08:38,756 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:08:38,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:08:38,757 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:08:38,757 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:08:39,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:08:39,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:08:39,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:08:39,111 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:08:39,111 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:08:39,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-09-01 00:08:40,404 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:08:40,755 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:08:40,759 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-09-01 00:08:40,779 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b1ac242/032b6c874a2a48a29078982bb9adb183/FLAGc476eb6a8 [2023-09-01 00:08:40,793 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54b1ac242/032b6c874a2a48a29078982bb9adb183 [2023-09-01 00:08:40,796 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:08:40,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:08:40,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:40,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:08:40,807 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:08:40,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:40" (1/1) ... [2023-09-01 00:08:40,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51ae9445 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:40, skipping insertion in model container [2023-09-01 00:08:40,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:08:40" (1/1) ... [2023-09-01 00:08:40,817 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:08:40,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:08:41,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:41,389 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:08:41,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:08:41,567 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:08:41,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41 WrapperNode [2023-09-01 00:08:41,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:08:41,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:08:41,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:08:41,570 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:08:41,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,647 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-09-01 00:08:41,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:08:41,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:08:41,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:08:41,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:08:41,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,670 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,679 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,691 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,695 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:08:41,696 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:08:41,696 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:08:41,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:08:41,697 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (1/1) ... [2023-09-01 00:08:41,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:08:41,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:08:41,758 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 00:08:41,767 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 00:08:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:08:41,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 00:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:08:41,795 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:08:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:08:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 00:08:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:08:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:08:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:08:41,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:08:41,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:08:41,798 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 00:08:41,991 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:08:41,993 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:08:42,351 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:08:42,359 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:08:42,359 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:08:42,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:42 BoogieIcfgContainer [2023-09-01 00:08:42,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:08:42,363 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:08:42,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:08:42,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:08:42,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:08:40" (1/3) ... [2023-09-01 00:08:42,367 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1001bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:08:42, skipping insertion in model container [2023-09-01 00:08:42,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:08:41" (2/3) ... [2023-09-01 00:08:42,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1001bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:08:42, skipping insertion in model container [2023-09-01 00:08:42,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:42" (3/3) ... [2023-09-01 00:08:42,369 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-09-01 00:08:42,394 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:08:42,394 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-09-01 00:08:42,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:08:42,489 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:08:42,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 331 flow [2023-09-01 00:08:42,577 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-09-01 00:08:42,581 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:42,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:08:42,585 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 163 transitions, 331 flow [2023-09-01 00:08:42,595 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 162 transitions, 327 flow [2023-09-01 00:08:42,599 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:08:42,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 162 transitions, 327 flow [2023-09-01 00:08:42,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 162 transitions, 327 flow [2023-09-01 00:08:42,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 162 transitions, 327 flow [2023-09-01 00:08:42,662 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-09-01 00:08:42,667 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:08:42,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:08:42,673 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-09-01 00:09:07,509 WARN L222 SmtUtils]: Spent 7.77s on a formula simplification. DAG size of input: 210 DAG size of output: 203 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:09:18,447 WARN L222 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 210 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:09:42,457 WARN L222 SmtUtils]: Spent 20.18s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:09:52,068 WARN L222 SmtUtils]: Spent 9.61s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:10:04,582 WARN L222 SmtUtils]: Spent 12.51s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:10:10,445 WARN L222 SmtUtils]: Spent 5.86s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:10:16,463 WARN L222 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:10:24,903 WARN L222 SmtUtils]: Spent 5.86s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:11:57,480 WARN L222 SmtUtils]: Spent 1.45m on a formula simplification. DAG size of input: 345 DAG size of output: 333 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:12:25,030 WARN L222 SmtUtils]: Spent 27.54s on a formula simplification that was a NOOP. DAG size: 302 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:13:37,720 WARN L222 SmtUtils]: Spent 1.21m on a formula simplification. DAG size of input: 345 DAG size of output: 327 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:13:48,689 WARN L222 SmtUtils]: Spent 10.96s on a formula simplification that was a NOOP. DAG size: 293 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:13:48,700 INFO L134 LiptonReduction]: Checked pairs total: 13335 [2023-09-01 00:13:48,700 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 00:13:48,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 00:13:48,715 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;@2c47f6f4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:13:48,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-09-01 00:13:48,717 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 00:13:48,718 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:13:48,718 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:48,718 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 00:13:48,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:48,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:48,723 INFO L85 PathProgramCache]: Analyzing trace with hash 586, now seen corresponding path program 1 times [2023-09-01 00:13:48,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:48,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271215427] [2023-09-01 00:13:48,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:48,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:48,820 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 00:13:48,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:48,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271215427] [2023-09-01 00:13:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271215427] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:48,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:48,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 00:13:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963909915] [2023-09-01 00:13:48,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 00:13:48,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:48,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 00:13:48,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 00:13:48,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 384 [2023-09-01 00:13:48,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 00:13:48,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:48,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 384 [2023-09-01 00:13:48,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:49,172 INFO L130 PetriNetUnfolder]: 192/480 cut-off events. [2023-09-01 00:13:49,172 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:13:49,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 480 events. 192/480 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2573 event pairs, 192 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 890. Up to 415 conditions per place. [2023-09-01 00:13:49,177 INFO L137 encePairwiseOnDemand]: 360/384 looper letters, 30 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-09-01 00:13:49,177 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 141 flow [2023-09-01 00:13:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 00:13:49,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 00:13:49,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 378 transitions. [2023-09-01 00:13:49,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2023-09-01 00:13:49,196 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 378 transitions. [2023-09-01 00:13:49,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 378 transitions. [2023-09-01 00:13:49,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:49,201 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 378 transitions. [2023-09-01 00:13:49,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 0 states have call successors, (0), 0 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 00:13:49,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 00:13:49,210 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 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 00:13:49,211 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 129 flow. Second operand 2 states and 378 transitions. [2023-09-01 00:13:49,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 141 flow [2023-09-01 00:13:49,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:49,216 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 80 flow [2023-09-01 00:13:49,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-09-01 00:13:49,224 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-09-01 00:13:49,224 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 80 flow [2023-09-01 00:13:49,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 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 00:13:49,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:49,225 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:13:49,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:13:49,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:49,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:49,228 INFO L85 PathProgramCache]: Analyzing trace with hash 604794, now seen corresponding path program 1 times [2023-09-01 00:13:49,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:49,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60436101] [2023-09-01 00:13:49,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:49,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:49,821 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 00:13:49,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:49,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60436101] [2023-09-01 00:13:49,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60436101] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:49,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:49,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:49,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24222321] [2023-09-01 00:13:49,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:49,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:49,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:49,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:49,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:49,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-09-01 00:13:49,949 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 00:13:49,949 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:49,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-09-01 00:13:49,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:50,428 INFO L130 PetriNetUnfolder]: 165/419 cut-off events. [2023-09-01 00:13:50,428 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:13:50,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 419 events. 165/419 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2224 event pairs, 165 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 779. Up to 358 conditions per place. [2023-09-01 00:13:50,430 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 27 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-09-01 00:13:50,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 132 flow [2023-09-01 00:13:50,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:50,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-09-01 00:13:50,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-09-01 00:13:50,433 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-09-01 00:13:50,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-09-01 00:13:50,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:50,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-09-01 00:13:50,435 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 00:13:50,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:50,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:50,438 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 80 flow. Second operand 3 states and 486 transitions. [2023-09-01 00:13:50,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 132 flow [2023-09-01 00:13:50,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 00:13:50,439 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 78 flow [2023-09-01 00:13:50,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, 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=78, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-09-01 00:13:50,440 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-09-01 00:13:50,440 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 78 flow [2023-09-01 00:13:50,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 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 00:13:50,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:50,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 00:13:50,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:13:50,441 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:50,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:50,442 INFO L85 PathProgramCache]: Analyzing trace with hash 604796, now seen corresponding path program 1 times [2023-09-01 00:13:50,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182083817] [2023-09-01 00:13:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:50,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:50,673 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 00:13:50,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:50,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182083817] [2023-09-01 00:13:50,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182083817] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:50,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:50,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:50,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990520726] [2023-09-01 00:13:50,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:50,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:50,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:50,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-09-01 00:13:50,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 00:13:50,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:50,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-09-01 00:13:50,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:50,971 INFO L130 PetriNetUnfolder]: 164/457 cut-off events. [2023-09-01 00:13:50,971 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:13:50,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 457 events. 164/457 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2539 event pairs, 144 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2023-09-01 00:13:50,974 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 36 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-09-01 00:13:50,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 182 flow [2023-09-01 00:13:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-09-01 00:13:50,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357638888888889 [2023-09-01 00:13:50,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-09-01 00:13:50,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-09-01 00:13:50,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:50,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-09-01 00:13:50,978 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 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 00:13:50,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:50,981 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:50,981 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 78 flow. Second operand 3 states and 502 transitions. [2023-09-01 00:13:50,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 182 flow [2023-09-01 00:13:50,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:50,982 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 105 flow [2023-09-01 00:13:50,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-09-01 00:13:50,983 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-09-01 00:13:50,983 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 105 flow [2023-09-01 00:13:50,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 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 00:13:50,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:50,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:13:50,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:13:50,984 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:50,985 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash 18746787, now seen corresponding path program 1 times [2023-09-01 00:13:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35542833] [2023-09-01 00:13:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:50,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:52,433 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 00:13:52,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:52,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35542833] [2023-09-01 00:13:52,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35542833] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:52,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:52,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:52,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175403793] [2023-09-01 00:13:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:52,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:52,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:52,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:52,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:52,577 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-09-01 00:13:52,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 00:13:52,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:52,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-09-01 00:13:52,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:52,857 INFO L130 PetriNetUnfolder]: 137/402 cut-off events. [2023-09-01 00:13:52,858 INFO L131 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2023-09-01 00:13:52,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 402 events. 137/402 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2294 event pairs, 33 based on Foata normal form. 14/282 useless extension candidates. Maximal degree in co-relation 782. Up to 248 conditions per place. [2023-09-01 00:13:52,860 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-09-01 00:13:52,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 207 flow [2023-09-01 00:13:52,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:52,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:52,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-09-01 00:13:52,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053819444444444 [2023-09-01 00:13:52,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-09-01 00:13:52,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-09-01 00:13:52,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:52,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-09-01 00:13:52,864 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 00:13:52,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:52,867 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:52,867 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 105 flow. Second operand 3 states and 467 transitions. [2023-09-01 00:13:52,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 207 flow [2023-09-01 00:13:52,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:13:52,868 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 95 flow [2023-09-01 00:13:52,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-09-01 00:13:52,869 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-09-01 00:13:52,869 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 95 flow [2023-09-01 00:13:52,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 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 00:13:52,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:52,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-09-01 00:13:52,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:13:52,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:52,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 18747251, now seen corresponding path program 1 times [2023-09-01 00:13:52,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:52,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754626142] [2023-09-01 00:13:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:52,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:52,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:53,507 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 00:13:53,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:53,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754626142] [2023-09-01 00:13:53,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754626142] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:53,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:53,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:53,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932970807] [2023-09-01 00:13:53,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:53,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:53,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:53,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:53,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:53,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-09-01 00:13:53,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 00:13:53,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:53,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-09-01 00:13:53,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:53,747 INFO L130 PetriNetUnfolder]: 134/388 cut-off events. [2023-09-01 00:13:53,747 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-09-01 00:13:53,748 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 388 events. 134/388 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2184 event pairs, 48 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 774. Up to 261 conditions per place. [2023-09-01 00:13:53,749 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-09-01 00:13:53,749 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 214 flow [2023-09-01 00:13:53,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:53,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-09-01 00:13:53,751 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-09-01 00:13:53,752 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-09-01 00:13:53,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-09-01 00:13:53,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:53,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-09-01 00:13:53,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 00:13:53,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:53,756 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:53,756 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 95 flow. Second operand 3 states and 480 transitions. [2023-09-01 00:13:53,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 214 flow [2023-09-01 00:13:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:13:53,758 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 122 flow [2023-09-01 00:13:53,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-09-01 00:13:53,759 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2023-09-01 00:13:53,759 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 122 flow [2023-09-01 00:13:53,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 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 00:13:53,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:53,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 00:13:53,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:13:53,760 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:53,760 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:53,761 INFO L85 PathProgramCache]: Analyzing trace with hash 581147541, now seen corresponding path program 1 times [2023-09-01 00:13:53,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:53,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284510041] [2023-09-01 00:13:53,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:53,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:53,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:54,327 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 00:13:54,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:54,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284510041] [2023-09-01 00:13:54,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284510041] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:54,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:54,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 00:13:54,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344424425] [2023-09-01 00:13:54,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:54,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 00:13:54,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:54,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 00:13:54,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 00:13:54,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 384 [2023-09-01 00:13:54,513 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 00:13:54,513 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:54,513 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 384 [2023-09-01 00:13:54,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:54,999 INFO L130 PetriNetUnfolder]: 144/409 cut-off events. [2023-09-01 00:13:55,000 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-09-01 00:13:55,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 409 events. 144/409 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2318 event pairs, 38 based on Foata normal form. 15/306 useless extension candidates. Maximal degree in co-relation 891. Up to 267 conditions per place. [2023-09-01 00:13:55,002 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 49 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2023-09-01 00:13:55,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 301 flow [2023-09-01 00:13:55,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:13:55,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:13:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-09-01 00:13:55,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39895833333333336 [2023-09-01 00:13:55,005 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-09-01 00:13:55,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-09-01 00:13:55,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:55,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-09-01 00:13:55,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 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 00:13:55,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:13:55,012 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:13:55,012 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 122 flow. Second operand 5 states and 766 transitions. [2023-09-01 00:13:55,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 301 flow [2023-09-01 00:13:55,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:55,016 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 179 flow [2023-09-01 00:13:55,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-09-01 00:13:55,018 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -15 predicate places. [2023-09-01 00:13:55,018 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 179 flow [2023-09-01 00:13:55,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 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 00:13:55,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:55,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:55,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:13:55,019 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:55,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 150858139, now seen corresponding path program 1 times [2023-09-01 00:13:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:55,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565125941] [2023-09-01 00:13:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:55,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:55,100 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 00:13:55,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:55,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565125941] [2023-09-01 00:13:55,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565125941] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:55,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:55,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:55,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745675271] [2023-09-01 00:13:55,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:55,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:55,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:55,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:55,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:55,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-09-01 00:13:55,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 00:13:55,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:55,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-09-01 00:13:55,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:55,469 INFO L130 PetriNetUnfolder]: 133/379 cut-off events. [2023-09-01 00:13:55,469 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2023-09-01 00:13:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 379 events. 133/379 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2066 event pairs, 115 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 896. Up to 274 conditions per place. [2023-09-01 00:13:55,471 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 34 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2023-09-01 00:13:55,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 281 flow [2023-09-01 00:13:55,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:55,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:55,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-09-01 00:13:55,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331597222222222 [2023-09-01 00:13:55,474 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-09-01 00:13:55,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-09-01 00:13:55,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:55,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-09-01 00:13:55,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 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 00:13:55,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:55,477 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:55,477 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 179 flow. Second operand 3 states and 499 transitions. [2023-09-01 00:13:55,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 281 flow [2023-09-01 00:13:55,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 271 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:55,481 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 213 flow [2023-09-01 00:13:55,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-09-01 00:13:55,482 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2023-09-01 00:13:55,482 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 213 flow [2023-09-01 00:13:55,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 00:13:55,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:55,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:55,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:13:55,483 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:55,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:55,484 INFO L85 PathProgramCache]: Analyzing trace with hash 150858140, now seen corresponding path program 1 times [2023-09-01 00:13:55,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:55,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33644565] [2023-09-01 00:13:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:55,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:55,541 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 00:13:55,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:55,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33644565] [2023-09-01 00:13:55,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33644565] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:55,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:55,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:55,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696320957] [2023-09-01 00:13:55,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:55,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:55,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:55,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:55,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:55,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-09-01 00:13:55,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 00:13:55,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:55,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-09-01 00:13:55,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:55,863 INFO L130 PetriNetUnfolder]: 100/316 cut-off events. [2023-09-01 00:13:55,863 INFO L131 PetriNetUnfolder]: For 152/153 co-relation queries the response was YES. [2023-09-01 00:13:55,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 316 events. 100/316 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1686 event pairs, 96 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 826. Up to 255 conditions per place. [2023-09-01 00:13:55,865 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 30 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 00:13:55,865 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 271 flow [2023-09-01 00:13:55,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-09-01 00:13:55,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175347222222222 [2023-09-01 00:13:55,867 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-09-01 00:13:55,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-09-01 00:13:55,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:55,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-09-01 00:13:55,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 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 00:13:55,872 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:55,872 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:55,873 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 213 flow. Second operand 3 states and 481 transitions. [2023-09-01 00:13:55,873 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 271 flow [2023-09-01 00:13:55,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 00:13:55,876 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 185 flow [2023-09-01 00:13:55,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-09-01 00:13:55,878 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -16 predicate places. [2023-09-01 00:13:55,879 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 185 flow [2023-09-01 00:13:55,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 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 00:13:55,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:55,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:55,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:13:55,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:55,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:55,881 INFO L85 PathProgramCache]: Analyzing trace with hash -44451740, now seen corresponding path program 1 times [2023-09-01 00:13:55,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:55,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63659637] [2023-09-01 00:13:55,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:55,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:55,978 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 00:13:55,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:55,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63659637] [2023-09-01 00:13:55,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63659637] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:55,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:55,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:13:55,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323370044] [2023-09-01 00:13:55,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:55,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:55,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:55,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:55,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:55,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 384 [2023-09-01 00:13:55,999 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 00:13:55,999 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:55,999 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 384 [2023-09-01 00:13:55,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:56,417 INFO L130 PetriNetUnfolder]: 91/316 cut-off events. [2023-09-01 00:13:56,418 INFO L131 PetriNetUnfolder]: For 86/91 co-relation queries the response was YES. [2023-09-01 00:13:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 316 events. 91/316 cut-off events. For 86/91 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1939 event pairs, 36 based on Foata normal form. 6/247 useless extension candidates. Maximal degree in co-relation 853. Up to 158 conditions per place. [2023-09-01 00:13:56,420 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 51 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-09-01 00:13:56,420 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 419 flow [2023-09-01 00:13:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:56,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:56,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-09-01 00:13:56,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418402777777778 [2023-09-01 00:13:56,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-09-01 00:13:56,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-09-01 00:13:56,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:56,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-09-01 00:13:56,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 00:13:56,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:56,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:56,426 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 185 flow. Second operand 3 states and 509 transitions. [2023-09-01 00:13:56,426 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 419 flow [2023-09-01 00:13:56,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:56,429 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 218 flow [2023-09-01 00:13:56,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-09-01 00:13:56,429 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2023-09-01 00:13:56,429 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 218 flow [2023-09-01 00:13:56,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 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 00:13:56,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:56,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:56,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:13:56,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:56,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:56,431 INFO L85 PathProgramCache]: Analyzing trace with hash 381630198, now seen corresponding path program 1 times [2023-09-01 00:13:56,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:56,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897069949] [2023-09-01 00:13:56,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:56,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:56,842 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 00:13:56,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:56,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897069949] [2023-09-01 00:13:56,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897069949] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:56,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:56,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:56,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541012930] [2023-09-01 00:13:56,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:56,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:56,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:56,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-09-01 00:13:56,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 00:13:56,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:56,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-09-01 00:13:56,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:57,250 INFO L130 PetriNetUnfolder]: 88/308 cut-off events. [2023-09-01 00:13:57,250 INFO L131 PetriNetUnfolder]: For 142/147 co-relation queries the response was YES. [2023-09-01 00:13:57,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 308 events. 88/308 cut-off events. For 142/147 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1856 event pairs, 47 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 922. Up to 202 conditions per place. [2023-09-01 00:13:57,252 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-09-01 00:13:57,252 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 331 flow [2023-09-01 00:13:57,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:57,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-09-01 00:13:57,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2023-09-01 00:13:57,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-09-01 00:13:57,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-09-01 00:13:57,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:57,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-09-01 00:13:57,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 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 00:13:57,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:57,257 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:57,257 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 218 flow. Second operand 3 states and 471 transitions. [2023-09-01 00:13:57,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 331 flow [2023-09-01 00:13:57,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 00:13:57,259 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 226 flow [2023-09-01 00:13:57,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-09-01 00:13:57,260 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -12 predicate places. [2023-09-01 00:13:57,260 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 226 flow [2023-09-01 00:13:57,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 00:13:57,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:57,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:57,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:13:57,260 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:57,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:57,261 INFO L85 PathProgramCache]: Analyzing trace with hash 381630197, now seen corresponding path program 1 times [2023-09-01 00:13:57,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:57,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614288017] [2023-09-01 00:13:57,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:57,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:57,475 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 00:13:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:57,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614288017] [2023-09-01 00:13:57,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614288017] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:57,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 00:13:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835539569] [2023-09-01 00:13:57,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:57,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 00:13:57,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:57,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 00:13:57,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 00:13:57,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-09-01 00:13:57,565 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 00:13:57,565 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:57,565 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-09-01 00:13:57,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:57,861 INFO L130 PetriNetUnfolder]: 85/298 cut-off events. [2023-09-01 00:13:57,862 INFO L131 PetriNetUnfolder]: For 143/149 co-relation queries the response was YES. [2023-09-01 00:13:57,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 298 events. 85/298 cut-off events. For 143/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1796 event pairs, 49 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 915. Up to 225 conditions per place. [2023-09-01 00:13:57,864 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-09-01 00:13:57,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 338 flow [2023-09-01 00:13:57,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 00:13:57,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 00:13:57,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-09-01 00:13:57,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105902777777778 [2023-09-01 00:13:57,866 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-09-01 00:13:57,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-09-01 00:13:57,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:57,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-09-01 00:13:57,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 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 00:13:57,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:57,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 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 00:13:57,870 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 226 flow. Second operand 3 states and 473 transitions. [2023-09-01 00:13:57,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 338 flow [2023-09-01 00:13:57,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:13:57,872 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 238 flow [2023-09-01 00:13:57,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-09-01 00:13:57,873 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2023-09-01 00:13:57,873 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 238 flow [2023-09-01 00:13:57,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 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 00:13:57,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:57,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:13:57,874 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:57,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:57,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1378222278, now seen corresponding path program 1 times [2023-09-01 00:13:57,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:57,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034945036] [2023-09-01 00:13:57,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:57,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:57,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:58,642 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 00:13:58,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:58,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034945036] [2023-09-01 00:13:58,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034945036] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:58,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:58,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 00:13:58,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986387504] [2023-09-01 00:13:58,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:58,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 00:13:58,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:58,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 00:13:58,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 00:13:58,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-09-01 00:13:58,800 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 00:13:58,800 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:13:58,800 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-09-01 00:13:58,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:13:59,208 INFO L130 PetriNetUnfolder]: 73/266 cut-off events. [2023-09-01 00:13:59,209 INFO L131 PetriNetUnfolder]: For 133/138 co-relation queries the response was YES. [2023-09-01 00:13:59,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 266 events. 73/266 cut-off events. For 133/138 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1524 event pairs, 23 based on Foata normal form. 18/235 useless extension candidates. Maximal degree in co-relation 856. Up to 103 conditions per place. [2023-09-01 00:13:59,210 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 47 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2023-09-01 00:13:59,210 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 412 flow [2023-09-01 00:13:59,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:13:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:13:59,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-09-01 00:13:59,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39479166666666665 [2023-09-01 00:13:59,213 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-09-01 00:13:59,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-09-01 00:13:59,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:13:59,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-09-01 00:13:59,215 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 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 00:13:59,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:13:59,217 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:13:59,218 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 238 flow. Second operand 5 states and 758 transitions. [2023-09-01 00:13:59,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 412 flow [2023-09-01 00:13:59,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 00:13:59,220 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 238 flow [2023-09-01 00:13:59,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-09-01 00:13:59,221 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-09-01 00:13:59,221 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 238 flow [2023-09-01 00:13:59,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 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 00:13:59,221 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:13:59,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:13:59,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:13:59,222 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:13:59,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:13:59,222 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220133, now seen corresponding path program 1 times [2023-09-01 00:13:59,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:13:59,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129152952] [2023-09-01 00:13:59,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:13:59,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:13:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:13:59,823 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 00:13:59,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:13:59,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129152952] [2023-09-01 00:13:59,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129152952] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:13:59,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:13:59,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 00:13:59,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070065547] [2023-09-01 00:13:59,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:13:59,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:13:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:13:59,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:13:59,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:14:00,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 384 [2023-09-01 00:14:00,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 00:14:00,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:14:00,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 384 [2023-09-01 00:14:00,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:14:00,395 INFO L130 PetriNetUnfolder]: 70/288 cut-off events. [2023-09-01 00:14:00,396 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-09-01 00:14:00,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 288 events. 70/288 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1720 event pairs, 26 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 949. Up to 98 conditions per place. [2023-09-01 00:14:00,398 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 40 selfloop transitions, 16 changer transitions 1/63 dead transitions. [2023-09-01 00:14:00,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 423 flow [2023-09-01 00:14:00,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 00:14:00,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 00:14:00,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2023-09-01 00:14:00,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810763888888889 [2023-09-01 00:14:00,401 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2023-09-01 00:14:00,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2023-09-01 00:14:00,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:14:00,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2023-09-01 00:14:00,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 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 00:14:00,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 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 00:14:00,406 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 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 00:14:00,407 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 238 flow. Second operand 6 states and 878 transitions. [2023-09-01 00:14:00,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 423 flow [2023-09-01 00:14:00,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 407 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 00:14:00,410 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 278 flow [2023-09-01 00:14:00,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-09-01 00:14:00,410 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-09-01 00:14:00,410 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 278 flow [2023-09-01 00:14:00,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 00:14:00,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:14:00,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:14:00,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:14:00,411 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:14:00,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:14:00,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220132, now seen corresponding path program 1 times [2023-09-01 00:14:00,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:14:00,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183977044] [2023-09-01 00:14:00,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:14:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:14:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:14:00,955 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 00:14:00,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:14:00,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183977044] [2023-09-01 00:14:00,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183977044] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:14:00,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:14:00,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 00:14:00,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477919139] [2023-09-01 00:14:00,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:14:00,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:14:00,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:14:00,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:14:00,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:14:01,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-09-01 00:14:01,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 00:14:01,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:14:01,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-09-01 00:14:01,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:14:01,785 INFO L130 PetriNetUnfolder]: 65/280 cut-off events. [2023-09-01 00:14:01,786 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-09-01 00:14:01,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 280 events. 65/280 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1674 event pairs, 32 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 980. Up to 123 conditions per place. [2023-09-01 00:14:01,793 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 38 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-09-01 00:14:01,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 404 flow [2023-09-01 00:14:01,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 00:14:01,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 00:14:01,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-09-01 00:14:01,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37604166666666666 [2023-09-01 00:14:01,796 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-09-01 00:14:01,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-09-01 00:14:01,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:14:01,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-09-01 00:14:01,800 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 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 00:14:01,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:14:01,803 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 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 00:14:01,803 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 278 flow. Second operand 5 states and 722 transitions. [2023-09-01 00:14:01,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 404 flow [2023-09-01 00:14:01,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 388 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 00:14:01,806 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 290 flow [2023-09-01 00:14:01,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-09-01 00:14:01,807 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2023-09-01 00:14:01,807 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 290 flow [2023-09-01 00:14:01,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 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 00:14:01,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:14:01,808 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:14:01,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 00:14:01,809 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:14:01,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:14:01,809 INFO L85 PathProgramCache]: Analyzing trace with hash 224780215, now seen corresponding path program 1 times [2023-09-01 00:14:01,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:14:01,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693537724] [2023-09-01 00:14:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:14:01,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:14:01,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 00:14:02,405 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 00:14:02,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 00:14:02,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693537724] [2023-09-01 00:14:02,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693537724] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 00:14:02,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 00:14:02,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 00:14:02,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475085895] [2023-09-01 00:14:02,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 00:14:02,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 00:14:02,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 00:14:02,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 00:14:02,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-09-01 00:14:02,635 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-09-01 00:14:02,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 00:14:02,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 00:14:02,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-09-01 00:14:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 00:14:03,265 INFO L130 PetriNetUnfolder]: 67/263 cut-off events. [2023-09-01 00:14:03,266 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2023-09-01 00:14:03,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 263 events. 67/263 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1467 event pairs, 9 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 1017. Up to 148 conditions per place. [2023-09-01 00:14:03,268 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 55 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-09-01 00:14:03,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 549 flow [2023-09-01 00:14:03,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 00:14:03,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 00:14:03,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2023-09-01 00:14:03,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3820684523809524 [2023-09-01 00:14:03,271 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2023-09-01 00:14:03,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2023-09-01 00:14:03,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 00:14:03,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2023-09-01 00:14:03,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 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 00:14:03,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 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 00:14:03,277 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 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 00:14:03,278 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 290 flow. Second operand 7 states and 1027 transitions. [2023-09-01 00:14:03,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 549 flow [2023-09-01 00:14:03,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-09-01 00:14:03,281 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 378 flow [2023-09-01 00:14:03,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-09-01 00:14:03,281 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-09-01 00:14:03,282 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 378 flow [2023-09-01 00:14:03,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 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 00:14:03,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:14:03,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:14:03,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 00:14:03,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-09-01 00:14:03,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:14:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1674345171, now seen corresponding path program 1 times [2023-09-01 00:14:03,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:14:03,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167635909] [2023-09-01 00:14:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:14:03,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:14:03,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:14:03,319 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:14:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:14:03,355 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:14:03,355 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:14:03,356 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (55 of 56 remaining) [2023-09-01 00:14:03,357 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 56 remaining) [2023-09-01 00:14:03,358 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 56 remaining) [2023-09-01 00:14:03,359 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 56 remaining) [2023-09-01 00:14:03,360 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 56 remaining) [2023-09-01 00:14:03,361 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 56 remaining) [2023-09-01 00:14:03,362 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 56 remaining) [2023-09-01 00:14:03,363 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 56 remaining) [2023-09-01 00:14:03,364 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 56 remaining) [2023-09-01 00:14:03,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 56 remaining) [2023-09-01 00:14:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 56 remaining) [2023-09-01 00:14:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 56 remaining) [2023-09-01 00:14:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 56 remaining) [2023-09-01 00:14:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 56 remaining) [2023-09-01 00:14:03,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 56 remaining) [2023-09-01 00:14:03,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 00:14:03,367 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:14:03,372 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 00:14:03,372 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 00:14:03,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 12:14:03 BasicIcfg [2023-09-01 00:14:03,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 00:14:03,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 00:14:03,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 00:14:03,413 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 00:14:03,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:08:42" (3/4) ... [2023-09-01 00:14:03,415 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-09-01 00:14:03,415 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 00:14:03,416 INFO L158 Benchmark]: Toolchain (without parser) took 322619.17ms. Allocated memory was 81.8MB in the beginning and 327.2MB in the end (delta: 245.4MB). Free memory was 57.5MB in the beginning and 264.4MB in the end (delta: -206.9MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,416 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:14:03,417 INFO L158 Benchmark]: CACSL2BoogieTranslator took 770.93ms. Allocated memory is still 81.8MB. Free memory was 57.3MB in the beginning and 39.9MB in the end (delta: 17.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,417 INFO L158 Benchmark]: Boogie Procedure Inliner took 78.67ms. Allocated memory is still 81.8MB. Free memory was 39.9MB in the beginning and 37.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,417 INFO L158 Benchmark]: Boogie Preprocessor took 45.76ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 35.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,417 INFO L158 Benchmark]: RCFGBuilder took 665.96ms. Allocated memory is still 81.8MB. Free memory was 35.4MB in the beginning and 35.2MB in the end (delta: 150.7kB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,418 INFO L158 Benchmark]: TraceAbstraction took 321048.84ms. Allocated memory was 81.8MB in the beginning and 327.2MB in the end (delta: 245.4MB). Free memory was 34.7MB in the beginning and 264.4MB in the end (delta: -229.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. [2023-09-01 00:14:03,418 INFO L158 Benchmark]: Witness Printer took 2.94ms. Allocated memory is still 327.2MB. Free memory is still 264.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 00:14:03,419 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 770.93ms. Allocated memory is still 81.8MB. Free memory was 57.3MB in the beginning and 39.9MB in the end (delta: 17.4MB). Peak memory consumption was 23.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 78.67ms. Allocated memory is still 81.8MB. Free memory was 39.9MB in the beginning and 37.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 45.76ms. Allocated memory is still 81.8MB. Free memory was 37.1MB in the beginning and 35.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 665.96ms. Allocated memory is still 81.8MB. Free memory was 35.4MB in the beginning and 35.2MB in the end (delta: 150.7kB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * TraceAbstraction took 321048.84ms. Allocated memory was 81.8MB in the beginning and 327.2MB in the end (delta: 245.4MB). Free memory was 34.7MB in the beginning and 264.4MB in the end (delta: -229.7MB). Peak memory consumption was 14.0MB. Max. memory is 16.1GB. * Witness Printer took 2.94ms. Allocated memory is still 327.2MB. Free memory is still 264.4MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 306.1s, 166 PlacesBefore, 67 PlacesAfterwards, 162 TransitionsBefore, 63 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 9 FixpointIterations, 157 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 221 TotalNumberOfCompositions, 13335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5821, independent: 5252, independent conditional: 0, independent unconditional: 5252, dependent: 569, dependent conditional: 0, dependent unconditional: 569, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1468, independent conditional: 0, independent unconditional: 1468, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5821, independent: 3784, independent conditional: 0, independent unconditional: 3784, dependent: 493, dependent conditional: 0, dependent unconditional: 493, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 255, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={6:0}] [L1256] EXPR 0 A->next VAL [A->next={-3:0}, A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next VAL [A={-2:0}, A_mutex={1:0}, B->next={-4:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, \result=0, arg={0:0}, p={-4:0}, t1={6:0}] [L1263] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 201 locations, 56 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 320.9s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 306.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2617 SdHoareTripleChecker+Valid, 6.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3267 IncrementalHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 150 mSDtfsCounter, 3267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=15, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.3s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-09-01 00:14:03,460 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/goblint-regression/09-regions_04-list2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --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 00:14:05,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:14:05,289 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:14:05,313 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:14:05,313 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:14:05,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:14:05,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:14:05,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:14:05,322 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:14:05,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:14:05,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:14:05,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:14:05,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:14:05,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:14:05,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:14:05,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:14:05,339 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:14:05,340 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:14:05,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:14:05,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:14:05,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:14:05,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:14:05,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:14:05,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:14:05,353 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:14:05,353 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:14:05,354 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:14:05,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:14:05,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:14:05,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:14:05,356 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:14:05,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:14:05,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:14:05,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:14:05,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:14:05,359 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:14:05,359 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:14:05,360 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:14:05,360 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:14:05,361 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:14:05,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:14:05,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-09-01 00:14:05,386 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:14:05,387 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:14:05,387 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:14:05,387 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:14:05,388 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:14:05,388 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:14:05,389 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:14:05,389 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:14:05,389 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:14:05,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:14:05,390 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:14:05,390 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:14:05,391 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:14:05,391 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:14:05,391 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:14:05,391 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:14:05,391 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:14:05,392 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:14:05,392 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:14:05,392 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:14:05,392 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-09-01 00:14:05,392 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-09-01 00:14:05,393 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:14:05,393 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:14:05,393 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:14:05,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:14:05,394 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:14:05,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:14:05,394 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:14:05,394 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:14:05,394 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-09-01 00:14:05,395 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-09-01 00:14:05,395 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:14:05,395 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:14:05,395 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:14:05,396 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-09-01 00:14:05,396 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:14:05,396 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:14:05,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:14:05,718 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:14:05,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:14:05,721 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:14:05,722 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:14:05,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-09-01 00:14:06,838 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:14:07,185 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:14:07,188 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-09-01 00:14:07,206 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47e469b9/b1e244ae04bf4de38558cc3180eb9fe8/FLAG9543116ea [2023-09-01 00:14:07,222 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f47e469b9/b1e244ae04bf4de38558cc3180eb9fe8 [2023-09-01 00:14:07,224 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:14:07,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:14:07,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:14:07,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:14:07,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:14:07,233 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3862c02f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07, skipping insertion in model container [2023-09-01 00:14:07,235 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,241 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:14:07,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:14:07,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:14:07,814 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:14:07,847 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:14:07,916 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:14:07,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07 WrapperNode [2023-09-01 00:14:07,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:14:07,917 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:14:07,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:14:07,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:14:07,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,982 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2023-09-01 00:14:07,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:14:07,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:14:07,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:14:07,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:14:07,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,998 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:07,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,009 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:14:08,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:14:08,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:14:08,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:14:08,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (1/1) ... [2023-09-01 00:14:08,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:14:08,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:14:08,055 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 00:14:08,057 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 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-09-01 00:14:08,082 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:14:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 00:14:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:14:08,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-09-01 00:14:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:14:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:14:08,089 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:14:08,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:14:08,090 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 00:14:08,218 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:14:08,220 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:14:08,773 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:14:08,780 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:14:08,780 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 00:14:08,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:08 BoogieIcfgContainer [2023-09-01 00:14:08,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:14:08,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:14:08,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:14:08,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:14:08,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:14:07" (1/3) ... [2023-09-01 00:14:08,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41029ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:08, skipping insertion in model container [2023-09-01 00:14:08,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:07" (2/3) ... [2023-09-01 00:14:08,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41029ec2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:08, skipping insertion in model container [2023-09-01 00:14:08,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:08" (3/3) ... [2023-09-01 00:14:08,788 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-09-01 00:14:08,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:14:08,802 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-09-01 00:14:08,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:14:08,863 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 00:14:08,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 164 transitions, 333 flow [2023-09-01 00:14:08,970 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-09-01 00:14:08,970 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:14:08,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:14:08,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 164 transitions, 333 flow [2023-09-01 00:14:08,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 163 transitions, 329 flow [2023-09-01 00:14:08,980 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:14:08,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 163 transitions, 329 flow [2023-09-01 00:14:08,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 163 transitions, 329 flow [2023-09-01 00:14:08,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 329 flow [2023-09-01 00:14:09,022 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-09-01 00:14:09,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:14:09,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-09-01 00:14:09,024 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-09-01 00:15:02,445 WARN L222 SmtUtils]: Spent 12.23s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:15:20,128 WARN L222 SmtUtils]: Spent 12.88s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:15:25,253 WARN L222 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 96 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:16:29,127 WARN L222 SmtUtils]: Spent 1.06m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:16:57,002 WARN L222 SmtUtils]: Spent 27.87s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:18:03,195 WARN L222 SmtUtils]: Spent 1.10m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:18:29,212 WARN L222 SmtUtils]: Spent 26.01s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:19:11,504 WARN L222 SmtUtils]: Spent 18.85s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:19:25,287 WARN L222 SmtUtils]: Spent 13.78s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:19:41,354 WARN L222 SmtUtils]: Spent 16.07s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:19:57,205 WARN L222 SmtUtils]: Spent 15.85s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:20:03,167 WARN L222 SmtUtils]: Spent 5.96s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:20:08,590 WARN L222 SmtUtils]: Spent 5.42s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:20:29,557 WARN L222 SmtUtils]: Spent 11.88s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-09-01 00:20:46,652 WARN L222 SmtUtils]: Spent 12.52s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15