./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:44:23,608 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:44:23,610 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:44:23,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:44:23,644 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:44:23,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:44:23,648 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:44:23,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:44:23,651 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:44:23,654 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:44:23,655 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:44:23,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:44:23,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:44:23,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:44:23,659 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:44:23,662 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:44:23,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:44:23,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:44:23,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:44:23,667 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:44:23,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:44:23,670 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:44:23,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:44:23,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:44:23,679 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:44:23,682 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:44:23,682 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:44:23,683 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:44:23,683 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:44:23,684 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:44:23,684 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:44:23,686 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:44:23,687 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:44:23,688 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:44:23,689 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:44:23,689 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:44:23,690 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:44:23,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:44:23,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:44:23,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:44:23,691 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:44:23,692 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:44:23,717 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:44:23,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:44:23,718 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:44:23,718 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:44:23,719 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:44:23,719 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:44:23,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:44:23,720 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:44:23,720 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:44:23,720 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:44:23,721 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:44:23,721 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:44:23,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:44:23,721 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:44:23,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:44:23,722 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:44:23,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:44:23,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:44:23,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:44:23,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:44:23,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:44:23,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:44:23,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:44:23,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:44:23,724 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:44:23,724 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:44:23,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:44:23,724 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:44:23,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8e3c959108026afa89c4d07543133cda81a16d409ef9b7609f190c1caa51d799 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:44:23,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:44:24,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:44:24,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:44:24,022 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:44:24,022 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:44:24,023 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-30 05:44:25,365 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:44:25,572 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:44:25,573 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-08-30 05:44:25,580 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fc7b900/43b2a054d80242d38eb336f0a2dc79c0/FLAGc0e2725b4 [2023-08-30 05:44:25,591 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/18fc7b900/43b2a054d80242d38eb336f0a2dc79c0 [2023-08-30 05:44:25,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:44:25,594 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:44:25,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:44:25,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:44:25,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:44:25,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe654ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25, skipping insertion in model container [2023-08-30 05:44:25,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,603 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:44:25,614 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:44:25,729 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-30 05:44:25,733 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:44:25,745 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:44:25,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c[2410,2423] [2023-08-30 05:44:25,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:44:25,766 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:44:25,766 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:44:25,771 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:44:25,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25 WrapperNode [2023-08-30 05:44:25,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:44:25,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:44:25,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:44:25,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:44:25,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,798 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-08-30 05:44:25,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:44:25,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:44:25,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:44:25,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:44:25,807 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,808 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,833 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:44:25,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:44:25,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:44:25,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:44:25,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (1/1) ... [2023-08-30 05:44:25,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:44:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:25,903 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:44:25,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:44:25,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:44:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:44:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:44:25,961 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:44:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:44:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:44:25,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:44:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:44:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:44:25,964 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:44:26,049 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:44:26,050 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:44:26,307 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:44:26,324 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:44:26,324 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 05:44:26,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:44:26 BoogieIcfgContainer [2023-08-30 05:44:26,326 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:44:26,327 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:44:26,327 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:44:26,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:44:26,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:44:25" (1/3) ... [2023-08-30 05:44:26,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f462ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:44:26, skipping insertion in model container [2023-08-30 05:44:26,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:44:25" (2/3) ... [2023-08-30 05:44:26,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f462ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:44:26, skipping insertion in model container [2023-08-30 05:44:26,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:44:26" (3/3) ... [2023-08-30 05:44:26,331 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-08-30 05:44:26,343 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:44:26,347 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 05:44:26,347 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:44:26,416 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 05:44:26,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 104 transitions, 224 flow [2023-08-30 05:44:26,507 INFO L130 PetriNetUnfolder]: 11/102 cut-off events. [2023-08-30 05:44:26,508 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:44:26,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 11/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 131 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-30 05:44:26,513 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 104 transitions, 224 flow [2023-08-30 05:44:26,516 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 98 transitions, 208 flow [2023-08-30 05:44:26,519 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:44:26,526 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 98 transitions, 208 flow [2023-08-30 05:44:26,528 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 98 transitions, 208 flow [2023-08-30 05:44:26,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 98 transitions, 208 flow [2023-08-30 05:44:26,552 INFO L130 PetriNetUnfolder]: 11/98 cut-off events. [2023-08-30 05:44:26,552 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 05:44:26,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107 conditions, 98 events. 11/98 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 54. Up to 4 conditions per place. [2023-08-30 05:44:26,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 1476 [2023-08-30 05:44:29,071 INFO L134 LiptonReduction]: Checked pairs total: 1479 [2023-08-30 05:44:29,071 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-30 05:44:29,082 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:44:29,086 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;@763c0c22, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:44:29,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 05:44:29,088 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:44:29,089 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:44:29,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:44:29,090 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,093 INFO L85 PathProgramCache]: Analyzing trace with hash 430, now seen corresponding path program 1 times [2023-08-30 05:44:29,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417715937] [2023-08-30 05:44:29,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:29,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:29,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417715937] [2023-08-30 05:44:29,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417715937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:29,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:29,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:44:29,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827567216] [2023-08-30 05:44:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:44:29,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:44:29,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:44:29,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 205 [2023-08-30 05:44:29,201 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 22 transitions, 56 flow. Second operand has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,201 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:29,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 205 [2023-08-30 05:44:29,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:29,242 INFO L130 PetriNetUnfolder]: 45/80 cut-off events. [2023-08-30 05:44:29,242 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-30 05:44:29,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 80 events. 45/80 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 159 event pairs, 21 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 124. Up to 81 conditions per place. [2023-08-30 05:44:29,244 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2023-08-30 05:44:29,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 19 transitions, 88 flow [2023-08-30 05:44:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:44:29,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:44:29,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 210 transitions. [2023-08-30 05:44:29,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5121951219512195 [2023-08-30 05:44:29,254 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 210 transitions. [2023-08-30 05:44:29,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 210 transitions. [2023-08-30 05:44:29,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:29,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 210 transitions. [2023-08-30 05:44:29,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,262 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 205.0) internal successors, (615), 3 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,263 INFO L175 Difference]: Start difference. First operand has 27 places, 22 transitions, 56 flow. Second operand 2 states and 210 transitions. [2023-08-30 05:44:29,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 19 transitions, 88 flow [2023-08-30 05:44:29,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 80 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 05:44:29,266 INFO L231 Difference]: Finished difference. Result has 21 places, 19 transitions, 42 flow [2023-08-30 05:44:29,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=19} [2023-08-30 05:44:29,270 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-30 05:44:29,270 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 19 transitions, 42 flow [2023-08-30 05:44:29,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 94.5) internal successors, (189), 2 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:44:29,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:44:29,271 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,272 INFO L85 PathProgramCache]: Analyzing trace with hash 421854, now seen corresponding path program 1 times [2023-08-30 05:44:29,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585180820] [2023-08-30 05:44:29,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:29,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585180820] [2023-08-30 05:44:29,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585180820] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:29,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:29,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:29,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800523396] [2023-08-30 05:44:29,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:29,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:29,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:29,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 205 [2023-08-30 05:44:29,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 19 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:29,455 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 205 [2023-08-30 05:44:29,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:29,494 INFO L130 PetriNetUnfolder]: 41/72 cut-off events. [2023-08-30 05:44:29,495 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:44:29,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 72 events. 41/72 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 131 event pairs, 19 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 147. Up to 72 conditions per place. [2023-08-30 05:44:29,496 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:44:29,496 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 17 transitions, 72 flow [2023-08-30 05:44:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:29,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:29,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2023-08-30 05:44:29,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46504065040650405 [2023-08-30 05:44:29,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2023-08-30 05:44:29,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2023-08-30 05:44:29,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:29,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2023-08-30 05:44:29,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,508 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,508 INFO L175 Difference]: Start difference. First operand has 21 places, 19 transitions, 42 flow. Second operand 3 states and 286 transitions. [2023-08-30 05:44:29,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 17 transitions, 72 flow [2023-08-30 05:44:29,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 17 transitions, 72 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:44:29,510 INFO L231 Difference]: Finished difference. Result has 21 places, 17 transitions, 40 flow [2023-08-30 05:44:29,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=17} [2023-08-30 05:44:29,511 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -6 predicate places. [2023-08-30 05:44:29,511 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 17 transitions, 40 flow [2023-08-30 05:44:29,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:44:29,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:44:29,512 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash 421855, now seen corresponding path program 1 times [2023-08-30 05:44:29,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429929192] [2023-08-30 05:44:29,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:29,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:29,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429929192] [2023-08-30 05:44:29,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429929192] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:29,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:29,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:44:29,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733806455] [2023-08-30 05:44:29,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:29,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:29,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:29,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 205 [2023-08-30 05:44:29,589 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 17 transitions, 40 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:29,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 205 [2023-08-30 05:44:29,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:29,609 INFO L130 PetriNetUnfolder]: 37/64 cut-off events. [2023-08-30 05:44:29,609 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:44:29,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 64 events. 37/64 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 108 event pairs, 17 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 132. Up to 64 conditions per place. [2023-08-30 05:44:29,610 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 14 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-08-30 05:44:29,610 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 15 transitions, 66 flow [2023-08-30 05:44:29,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:29,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:29,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-30 05:44:29,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227642276422763 [2023-08-30 05:44:29,612 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-30 05:44:29,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-30 05:44:29,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:29,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-30 05:44:29,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,614 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,614 INFO L175 Difference]: Start difference. First operand has 21 places, 17 transitions, 40 flow. Second operand 3 states and 272 transitions. [2023-08-30 05:44:29,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 15 transitions, 66 flow [2023-08-30 05:44:29,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 15 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:29,615 INFO L231 Difference]: Finished difference. Result has 20 places, 15 transitions, 37 flow [2023-08-30 05:44:29,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=35, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=37, PETRI_PLACES=20, PETRI_TRANSITIONS=15} [2023-08-30 05:44:29,616 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:44:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 15 transitions, 37 flow [2023-08-30 05:44:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:44:29,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:44:29,617 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,617 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash 405413125, now seen corresponding path program 1 times [2023-08-30 05:44:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239598433] [2023-08-30 05:44:29,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:29,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239598433] [2023-08-30 05:44:29,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239598433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:29,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:29,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:44:29,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021328022] [2023-08-30 05:44:29,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:44:29,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:44:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:44:29,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 205 [2023-08-30 05:44:29,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 37 flow. Second operand has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:29,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 205 [2023-08-30 05:44:29,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:29,758 INFO L130 PetriNetUnfolder]: 29/52 cut-off events. [2023-08-30 05:44:29,759 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:44:29,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113 conditions, 52 events. 29/52 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 77 event pairs, 13 based on Foata normal form. 0/32 useless extension candidates. Maximal degree in co-relation 109. Up to 52 conditions per place. [2023-08-30 05:44:29,759 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 13 selfloop transitions, 1 changer transitions 0/14 dead transitions. [2023-08-30 05:44:29,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 14 transitions, 63 flow [2023-08-30 05:44:29,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:29,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 258 transitions. [2023-08-30 05:44:29,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4195121951219512 [2023-08-30 05:44:29,761 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 258 transitions. [2023-08-30 05:44:29,761 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 258 transitions. [2023-08-30 05:44:29,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:29,762 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 258 transitions. [2023-08-30 05:44:29,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,765 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 37 flow. Second operand 3 states and 258 transitions. [2023-08-30 05:44:29,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 14 transitions, 63 flow [2023-08-30 05:44:29,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 14 transitions, 62 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:29,765 INFO L231 Difference]: Finished difference. Result has 20 places, 14 transitions, 36 flow [2023-08-30 05:44:29,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=36, PETRI_PLACES=20, PETRI_TRANSITIONS=14} [2023-08-30 05:44:29,766 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:44:29,766 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 14 transitions, 36 flow [2023-08-30 05:44:29,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.25) internal successors, (329), 4 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:44:29,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:44:29,768 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,768 INFO L85 PathProgramCache]: Analyzing trace with hash 405413126, now seen corresponding path program 1 times [2023-08-30 05:44:29,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066937765] [2023-08-30 05:44:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:29,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:29,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:29,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066937765] [2023-08-30 05:44:29,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066937765] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:29,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:29,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:44:29,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658726782] [2023-08-30 05:44:29,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:29,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:44:29,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:29,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:44:29,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:44:29,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 205 [2023-08-30 05:44:29,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 14 transitions, 36 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:29,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 205 [2023-08-30 05:44:29,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:29,929 INFO L130 PetriNetUnfolder]: 21/40 cut-off events. [2023-08-30 05:44:29,930 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-30 05:44:29,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 40 events. 21/40 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 45 event pairs, 9 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 86. Up to 40 conditions per place. [2023-08-30 05:44:29,930 INFO L137 encePairwiseOnDemand]: 203/205 looper letters, 12 selfloop transitions, 1 changer transitions 0/13 dead transitions. [2023-08-30 05:44:29,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 13 transitions, 60 flow [2023-08-30 05:44:29,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:29,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:29,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-30 05:44:29,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44715447154471544 [2023-08-30 05:44:29,932 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-30 05:44:29,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-30 05:44:29,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:29,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-30 05:44:29,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,935 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,935 INFO L175 Difference]: Start difference. First operand has 20 places, 14 transitions, 36 flow. Second operand 3 states and 275 transitions. [2023-08-30 05:44:29,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 13 transitions, 60 flow [2023-08-30 05:44:29,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 13 transitions, 59 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:29,936 INFO L231 Difference]: Finished difference. Result has 20 places, 13 transitions, 35 flow [2023-08-30 05:44:29,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=33, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=35, PETRI_PLACES=20, PETRI_TRANSITIONS=13} [2023-08-30 05:44:29,937 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -7 predicate places. [2023-08-30 05:44:29,937 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 13 transitions, 35 flow [2023-08-30 05:44:29,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:29,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:29,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:29,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:44:29,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:29,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:29,939 INFO L85 PathProgramCache]: Analyzing trace with hash -883757984, now seen corresponding path program 1 times [2023-08-30 05:44:29,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:29,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387565052] [2023-08-30 05:44:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:29,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:30,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:30,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:30,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387565052] [2023-08-30 05:44:30,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387565052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:30,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:30,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:44:30,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882417702] [2023-08-30 05:44:30,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:30,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:30,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:30,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:30,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-08-30 05:44:30,019 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 13 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:30,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-08-30 05:44:30,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:30,045 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-08-30 05:44:30,046 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:44:30,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 54 events. 29/54 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 92 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 116. Up to 45 conditions per place. [2023-08-30 05:44:30,048 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-08-30 05:44:30,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 86 flow [2023-08-30 05:44:30,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:30,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-30 05:44:30,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-08-30 05:44:30,050 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,051 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:30,051 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,054 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,054 INFO L175 Difference]: Start difference. First operand has 20 places, 13 transitions, 35 flow. Second operand 3 states and 290 transitions. [2023-08-30 05:44:30,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 19 transitions, 86 flow [2023-08-30 05:44:30,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 19 transitions, 85 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:30,055 INFO L231 Difference]: Finished difference. Result has 22 places, 14 transitions, 46 flow [2023-08-30 05:44:30,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=22, PETRI_TRANSITIONS=14} [2023-08-30 05:44:30,058 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -5 predicate places. [2023-08-30 05:44:30,058 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 14 transitions, 46 flow [2023-08-30 05:44:30,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:30,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:30,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:44:30,061 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:30,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:30,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1529812726, now seen corresponding path program 1 times [2023-08-30 05:44:30,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:30,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247537473] [2023-08-30 05:44:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:30,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:30,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247537473] [2023-08-30 05:44:30,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247537473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:44:30,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:44:30,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:44:30,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721263085] [2023-08-30 05:44:30,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:44:30,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:44:30,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:44:30,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:44:30,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 205 [2023-08-30 05:44:30,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 14 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:30,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 205 [2023-08-30 05:44:30,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:30,167 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-08-30 05:44:30,167 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 05:44:30,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 135 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 187. Up to 49 conditions per place. [2023-08-30 05:44:30,168 INFO L137 encePairwiseOnDemand]: 202/205 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-08-30 05:44:30,168 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 21 transitions, 110 flow [2023-08-30 05:44:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:44:30,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:44:30,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 290 transitions. [2023-08-30 05:44:30,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715447154471545 [2023-08-30 05:44:30,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:30,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 290 transitions. [2023-08-30 05:44:30,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.66666666666667) internal successors, (290), 3 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,173 INFO L175 Difference]: Start difference. First operand has 22 places, 14 transitions, 46 flow. Second operand 3 states and 290 transitions. [2023-08-30 05:44:30,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 21 transitions, 110 flow [2023-08-30 05:44:30,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:30,174 INFO L231 Difference]: Finished difference. Result has 24 places, 15 transitions, 56 flow [2023-08-30 05:44:30,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=24, PETRI_TRANSITIONS=15} [2023-08-30 05:44:30,175 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -3 predicate places. [2023-08-30 05:44:30,175 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 15 transitions, 56 flow [2023-08-30 05:44:30,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:30,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:30,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:30,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:44:30,176 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:30,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:30,177 INFO L85 PathProgramCache]: Analyzing trace with hash -605431645, now seen corresponding path program 1 times [2023-08-30 05:44:30,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:30,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223355411] [2023-08-30 05:44:30,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:30,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:30,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:30,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223355411] [2023-08-30 05:44:30,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223355411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:30,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2034801332] [2023-08-30 05:44:30,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:30,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:30,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:30,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:30,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:44:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:30,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:44:30,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:30,549 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:30,550 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2034801332] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:30,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 9 [2023-08-30 05:44:30,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205354092] [2023-08-30 05:44:30,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:30,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 05:44:30,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:30,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 05:44:30,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2023-08-30 05:44:31,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 205 [2023-08-30 05:44:31,045 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 15 transitions, 56 flow. Second operand has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:31,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:31,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 205 [2023-08-30 05:44:31,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:31,191 INFO L130 PetriNetUnfolder]: 75/134 cut-off events. [2023-08-30 05:44:31,191 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-30 05:44:31,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 134 events. 75/134 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 336 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 381. Up to 53 conditions per place. [2023-08-30 05:44:31,194 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 44 selfloop transitions, 23 changer transitions 0/67 dead transitions. [2023-08-30 05:44:31,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 353 flow [2023-08-30 05:44:31,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-30 05:44:31,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-30 05:44:31,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1155 transitions. [2023-08-30 05:44:31,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375609756097561 [2023-08-30 05:44:31,197 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1155 transitions. [2023-08-30 05:44:31,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1155 transitions. [2023-08-30 05:44:31,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:31,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1155 transitions. [2023-08-30 05:44:31,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.0) internal successors, (1155), 15 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:31,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:31,203 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 205.0) internal successors, (3280), 16 states have internal predecessors, (3280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:31,203 INFO L175 Difference]: Start difference. First operand has 24 places, 15 transitions, 56 flow. Second operand 15 states and 1155 transitions. [2023-08-30 05:44:31,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 353 flow [2023-08-30 05:44:31,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 349 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:44:31,206 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 235 flow [2023-08-30 05:44:31,206 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=235, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-30 05:44:31,208 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-08-30 05:44:31,208 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 235 flow [2023-08-30 05:44:31,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 75.5) internal successors, (755), 10 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:31,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:31,209 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:31,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:31,414 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:31,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:31,415 INFO L85 PathProgramCache]: Analyzing trace with hash 222277116, now seen corresponding path program 2 times [2023-08-30 05:44:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:31,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35584411] [2023-08-30 05:44:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:31,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:31,974 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:31,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:31,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35584411] [2023-08-30 05:44:31,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35584411] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:31,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802142560] [2023-08-30 05:44:31,975 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:44:31,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:31,975 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:31,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:32,025 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:44:32,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:44:32,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:32,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 05:44:32,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:32,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:32,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:32,984 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:32,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802142560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:32,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:32,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-08-30 05:44:32,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635798211] [2023-08-30 05:44:32,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:32,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 05:44:32,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 05:44:32,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2023-08-30 05:44:33,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-30 05:44:33,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 235 flow. Second operand has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:33,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:33,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-30 05:44:33,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:33,797 INFO L130 PetriNetUnfolder]: 255/462 cut-off events. [2023-08-30 05:44:33,798 INFO L131 PetriNetUnfolder]: For 1074/1074 co-relation queries the response was YES. [2023-08-30 05:44:33,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1991 conditions, 462 events. 255/462 cut-off events. For 1074/1074 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1890 event pairs, 0 based on Foata normal form. 12/438 useless extension candidates. Maximal degree in co-relation 1980. Up to 179 conditions per place. [2023-08-30 05:44:33,801 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 68 selfloop transitions, 82 changer transitions 33/183 dead transitions. [2023-08-30 05:44:33,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 183 transitions, 1499 flow [2023-08-30 05:44:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-30 05:44:33,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-30 05:44:33,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1614 transitions. [2023-08-30 05:44:33,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3578713968957871 [2023-08-30 05:44:33,805 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1614 transitions. [2023-08-30 05:44:33,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1614 transitions. [2023-08-30 05:44:33,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:33,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1614 transitions. [2023-08-30 05:44:33,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 73.36363636363636) internal successors, (1614), 22 states have internal predecessors, (1614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:33,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:33,816 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 205.0) internal successors, (4715), 23 states have internal predecessors, (4715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:33,817 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 235 flow. Second operand 22 states and 1614 transitions. [2023-08-30 05:44:33,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 183 transitions, 1499 flow [2023-08-30 05:44:33,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 183 transitions, 1295 flow, removed 93 selfloop flow, removed 3 redundant places. [2023-08-30 05:44:33,827 INFO L231 Difference]: Finished difference. Result has 68 places, 104 transitions, 914 flow [2023-08-30 05:44:33,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=914, PETRI_PLACES=68, PETRI_TRANSITIONS=104} [2023-08-30 05:44:33,828 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 41 predicate places. [2023-08-30 05:44:33,828 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 104 transitions, 914 flow [2023-08-30 05:44:33,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 69.29411764705883) internal successors, (1178), 17 states have internal predecessors, (1178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:33,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:33,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:33,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:34,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-08-30 05:44:34,037 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:34,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:34,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1421857516, now seen corresponding path program 3 times [2023-08-30 05:44:34,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:34,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412054721] [2023-08-30 05:44:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:34,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:34,651 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:34,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412054721] [2023-08-30 05:44:34,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412054721] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:34,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016762090] [2023-08-30 05:44:34,651 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:44:34,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:34,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:34,665 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:34,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:44:34,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:44:34,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:34,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 05:44:34,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:34,895 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:34,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:35,386 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:35,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2016762090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:35,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:35,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-08-30 05:44:35,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721421751] [2023-08-30 05:44:35,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:35,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:44:35,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:35,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:44:35,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:44:35,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-30 05:44:35,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 104 transitions, 914 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:35,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:35,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-30 05:44:35,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:36,291 INFO L130 PetriNetUnfolder]: 546/935 cut-off events. [2023-08-30 05:44:36,291 INFO L131 PetriNetUnfolder]: For 2954/2954 co-relation queries the response was YES. [2023-08-30 05:44:36,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4698 conditions, 935 events. 546/935 cut-off events. For 2954/2954 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4398 event pairs, 0 based on Foata normal form. 14/901 useless extension candidates. Maximal degree in co-relation 4680. Up to 325 conditions per place. [2023-08-30 05:44:36,298 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 95 selfloop transitions, 198 changer transitions 32/325 dead transitions. [2023-08-30 05:44:36,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 325 transitions, 3545 flow [2023-08-30 05:44:36,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 05:44:36,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 05:44:36,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1662 transitions. [2023-08-30 05:44:36,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35249204665959705 [2023-08-30 05:44:36,302 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1662 transitions. [2023-08-30 05:44:36,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1662 transitions. [2023-08-30 05:44:36,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:36,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1662 transitions. [2023-08-30 05:44:36,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 72.26086956521739) internal successors, (1662), 23 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:36,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:36,310 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 205.0) internal successors, (4920), 24 states have internal predecessors, (4920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:36,310 INFO L175 Difference]: Start difference. First operand has 68 places, 104 transitions, 914 flow. Second operand 23 states and 1662 transitions. [2023-08-30 05:44:36,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 325 transitions, 3545 flow [2023-08-30 05:44:36,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 325 transitions, 2529 flow, removed 500 selfloop flow, removed 4 redundant places. [2023-08-30 05:44:36,333 INFO L231 Difference]: Finished difference. Result has 94 places, 240 transitions, 2201 flow [2023-08-30 05:44:36,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=638, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2201, PETRI_PLACES=94, PETRI_TRANSITIONS=240} [2023-08-30 05:44:36,334 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 67 predicate places. [2023-08-30 05:44:36,334 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 240 transitions, 2201 flow [2023-08-30 05:44:36,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:36,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:36,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:36,349 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:36,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:36,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash 953327124, now seen corresponding path program 4 times [2023-08-30 05:44:36,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:36,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052198916] [2023-08-30 05:44:36,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:36,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052198916] [2023-08-30 05:44:36,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052198916] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116039239] [2023-08-30 05:44:36,987 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:44:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:36,988 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:37,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:44:37,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:44:37,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:37,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 05:44:37,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:37,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:37,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:37,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116039239] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:37,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:37,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-30 05:44:37,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329515353] [2023-08-30 05:44:37,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:37,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:44:37,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:44:37,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:44:38,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 205 [2023-08-30 05:44:38,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 240 transitions, 2201 flow. Second operand has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:38,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:38,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 205 [2023-08-30 05:44:38,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:39,853 INFO L130 PetriNetUnfolder]: 1013/1690 cut-off events. [2023-08-30 05:44:39,853 INFO L131 PetriNetUnfolder]: For 2794/2794 co-relation queries the response was YES. [2023-08-30 05:44:39,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8287 conditions, 1690 events. 1013/1690 cut-off events. For 2794/2794 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8775 event pairs, 4 based on Foata normal form. 49/1739 useless extension candidates. Maximal degree in co-relation 8262. Up to 409 conditions per place. [2023-08-30 05:44:39,863 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 121 selfloop transitions, 414 changer transitions 38/573 dead transitions. [2023-08-30 05:44:39,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 573 transitions, 6044 flow [2023-08-30 05:44:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 05:44:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 05:44:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2622 transitions. [2023-08-30 05:44:39,869 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35528455284552846 [2023-08-30 05:44:39,869 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2622 transitions. [2023-08-30 05:44:39,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2622 transitions. [2023-08-30 05:44:39,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:39,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2622 transitions. [2023-08-30 05:44:39,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 72.83333333333333) internal successors, (2622), 36 states have internal predecessors, (2622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:39,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:39,883 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 205.0) internal successors, (7585), 37 states have internal predecessors, (7585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:39,883 INFO L175 Difference]: Start difference. First operand has 94 places, 240 transitions, 2201 flow. Second operand 36 states and 2622 transitions. [2023-08-30 05:44:39,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 573 transitions, 6044 flow [2023-08-30 05:44:39,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 573 transitions, 5700 flow, removed 166 selfloop flow, removed 4 redundant places. [2023-08-30 05:44:39,930 INFO L231 Difference]: Finished difference. Result has 137 places, 483 transitions, 5623 flow [2023-08-30 05:44:39,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=1884, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=188, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=5623, PETRI_PLACES=137, PETRI_TRANSITIONS=483} [2023-08-30 05:44:39,930 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 110 predicate places. [2023-08-30 05:44:39,931 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 483 transitions, 5623 flow [2023-08-30 05:44:39,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 70.22222222222223) internal successors, (1264), 18 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:39,931 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:39,931 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:39,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:40,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:40,139 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:40,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:40,140 INFO L85 PathProgramCache]: Analyzing trace with hash 609636454, now seen corresponding path program 5 times [2023-08-30 05:44:40,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:40,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670759070] [2023-08-30 05:44:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:40,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:40,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:40,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670759070] [2023-08-30 05:44:40,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670759070] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:40,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175181194] [2023-08-30 05:44:40,580 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:44:40,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:40,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:40,581 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:40,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:44:40,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:44:40,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:40,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 18 conjunts are in the unsatisfiable core [2023-08-30 05:44:40,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:40,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:41,240 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:41,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175181194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:41,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:41,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 5] total 16 [2023-08-30 05:44:41,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290035255] [2023-08-30 05:44:41,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:41,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-30 05:44:41,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:41,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-30 05:44:41,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2023-08-30 05:44:41,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-30 05:44:41,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 483 transitions, 5623 flow. Second operand has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:41,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:41,332 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-30 05:44:41,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:42,318 INFO L130 PetriNetUnfolder]: 1459/2409 cut-off events. [2023-08-30 05:44:42,318 INFO L131 PetriNetUnfolder]: For 5100/5100 co-relation queries the response was YES. [2023-08-30 05:44:42,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14274 conditions, 2409 events. 1459/2409 cut-off events. For 5100/5100 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13200 event pairs, 21 based on Foata normal form. 10/2419 useless extension candidates. Maximal degree in co-relation 14235. Up to 639 conditions per place. [2023-08-30 05:44:42,338 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 230 selfloop transitions, 523 changer transitions 85/838 dead transitions. [2023-08-30 05:44:42,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 838 transitions, 11093 flow [2023-08-30 05:44:42,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-08-30 05:44:42,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-08-30 05:44:42,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1731 transitions. [2023-08-30 05:44:42,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3518292682926829 [2023-08-30 05:44:42,342 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1731 transitions. [2023-08-30 05:44:42,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1731 transitions. [2023-08-30 05:44:42,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:42,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1731 transitions. [2023-08-30 05:44:42,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 72.125) internal successors, (1731), 24 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:42,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:42,353 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 205.0) internal successors, (5125), 25 states have internal predecessors, (5125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:42,353 INFO L175 Difference]: Start difference. First operand has 137 places, 483 transitions, 5623 flow. Second operand 24 states and 1731 transitions. [2023-08-30 05:44:42,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 838 transitions, 11093 flow [2023-08-30 05:44:42,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 838 transitions, 10377 flow, removed 276 selfloop flow, removed 11 redundant places. [2023-08-30 05:44:42,493 INFO L231 Difference]: Finished difference. Result has 155 places, 701 transitions, 9679 flow [2023-08-30 05:44:42,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=5161, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=483, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=309, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9679, PETRI_PLACES=155, PETRI_TRANSITIONS=701} [2023-08-30 05:44:42,494 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 128 predicate places. [2023-08-30 05:44:42,494 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 701 transitions, 9679 flow [2023-08-30 05:44:42,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 69.05555555555556) internal successors, (1243), 18 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:42,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:42,495 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:42,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:42,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-30 05:44:42,700 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:42,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash -754462680, now seen corresponding path program 6 times [2023-08-30 05:44:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:42,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489457227] [2023-08-30 05:44:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 05:44:43,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489457227] [2023-08-30 05:44:43,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489457227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:43,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722505367] [2023-08-30 05:44:43,043 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:44:43,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:43,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:43,044 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:43,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:44:43,105 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-30 05:44:43,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:43,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:44:43,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:43,174 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:43,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:43,371 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-30 05:44:43,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722505367] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:43,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:43,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 4] total 12 [2023-08-30 05:44:43,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251618866] [2023-08-30 05:44:43,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:43,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 05:44:43,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:43,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 05:44:43,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-08-30 05:44:43,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 205 [2023-08-30 05:44:43,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 701 transitions, 9679 flow. Second operand has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:43,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:43,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 205 [2023-08-30 05:44:43,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:43,786 INFO L130 PetriNetUnfolder]: 1187/2006 cut-off events. [2023-08-30 05:44:43,786 INFO L131 PetriNetUnfolder]: For 6237/6237 co-relation queries the response was YES. [2023-08-30 05:44:43,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13022 conditions, 2006 events. 1187/2006 cut-off events. For 6237/6237 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10957 event pairs, 42 based on Foata normal form. 154/2160 useless extension candidates. Maximal degree in co-relation 12979. Up to 719 conditions per place. [2023-08-30 05:44:43,808 INFO L137 encePairwiseOnDemand]: 201/205 looper letters, 293 selfloop transitions, 373 changer transitions 3/669 dead transitions. [2023-08-30 05:44:43,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 669 transitions, 10242 flow [2023-08-30 05:44:43,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:44:43,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:44:43,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 730 transitions. [2023-08-30 05:44:43,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956639566395664 [2023-08-30 05:44:43,809 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 730 transitions. [2023-08-30 05:44:43,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 730 transitions. [2023-08-30 05:44:43,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:43,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 730 transitions. [2023-08-30 05:44:43,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:43,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:43,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 205.0) internal successors, (2050), 10 states have internal predecessors, (2050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:43,813 INFO L175 Difference]: Start difference. First operand has 155 places, 701 transitions, 9679 flow. Second operand 9 states and 730 transitions. [2023-08-30 05:44:43,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 669 transitions, 10242 flow [2023-08-30 05:44:43,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 669 transitions, 9771 flow, removed 90 selfloop flow, removed 7 redundant places. [2023-08-30 05:44:43,974 INFO L231 Difference]: Finished difference. Result has 154 places, 642 transitions, 8912 flow [2023-08-30 05:44:43,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=8055, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=630, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=358, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=8912, PETRI_PLACES=154, PETRI_TRANSITIONS=642} [2023-08-30 05:44:43,975 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 127 predicate places. [2023-08-30 05:44:43,975 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 642 transitions, 8912 flow [2023-08-30 05:44:43,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:43,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:43,976 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:43,983 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:44,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:44,183 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:44,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:44,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1390838903, now seen corresponding path program 7 times [2023-08-30 05:44:44,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:44,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686868270] [2023-08-30 05:44:44,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:44,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:44,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686868270] [2023-08-30 05:44:44,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686868270] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:44,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561526971] [2023-08-30 05:44:44,494 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:44:44,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:44,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:44,495 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:44,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:44:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:44,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-30 05:44:44,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:44,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:44,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:44,889 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:44,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561526971] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:44,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:44,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 14 [2023-08-30 05:44:44,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468105459] [2023-08-30 05:44:44,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:44,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:44:44,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:44,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:44:44,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:44:44,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 205 [2023-08-30 05:44:44,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 642 transitions, 8912 flow. Second operand has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:44,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:44,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 205 [2023-08-30 05:44:44,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:45,294 INFO L130 PetriNetUnfolder]: 949/1616 cut-off events. [2023-08-30 05:44:45,294 INFO L131 PetriNetUnfolder]: For 4475/4475 co-relation queries the response was YES. [2023-08-30 05:44:45,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10520 conditions, 1616 events. 949/1616 cut-off events. For 4475/4475 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 8356 event pairs, 4 based on Foata normal form. 196/1810 useless extension candidates. Maximal degree in co-relation 10483. Up to 575 conditions per place. [2023-08-30 05:44:45,311 INFO L137 encePairwiseOnDemand]: 200/205 looper letters, 288 selfloop transitions, 226 changer transitions 46/560 dead transitions. [2023-08-30 05:44:45,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 560 transitions, 8592 flow [2023-08-30 05:44:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:44:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:44:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 622 transitions. [2023-08-30 05:44:45,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37926829268292683 [2023-08-30 05:44:45,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 622 transitions. [2023-08-30 05:44:45,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 622 transitions. [2023-08-30 05:44:45,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:45,313 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 622 transitions. [2023-08-30 05:44:45,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.75) internal successors, (622), 8 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:45,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:45,325 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 205.0) internal successors, (1845), 9 states have internal predecessors, (1845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:45,325 INFO L175 Difference]: Start difference. First operand has 154 places, 642 transitions, 8912 flow. Second operand 8 states and 622 transitions. [2023-08-30 05:44:45,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 560 transitions, 8592 flow [2023-08-30 05:44:45,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 560 transitions, 8177 flow, removed 66 selfloop flow, removed 9 redundant places. [2023-08-30 05:44:45,427 INFO L231 Difference]: Finished difference. Result has 149 places, 473 transitions, 6695 flow [2023-08-30 05:44:45,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6451, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6695, PETRI_PLACES=149, PETRI_TRANSITIONS=473} [2023-08-30 05:44:45,428 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 122 predicate places. [2023-08-30 05:44:45,428 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 473 transitions, 6695 flow [2023-08-30 05:44:45,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 75.66666666666667) internal successors, (1135), 15 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:45,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:44:45,429 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:45,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:45,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:45,636 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 05:44:45,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:44:45,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1578425142, now seen corresponding path program 8 times [2023-08-30 05:44:45,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:44:45,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069240849] [2023-08-30 05:44:45,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:44:45,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:44:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:44:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:46,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:44:46,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069240849] [2023-08-30 05:44:46,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069240849] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:44:46,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209375430] [2023-08-30 05:44:46,304 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:44:46,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:44:46,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:44:46,305 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:44:46,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:44:46,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:44:46,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:44:46,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-30 05:44:46,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:44:46,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:44:46,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:44:47,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-30 05:44:47,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209375430] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:44:47,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:44:47,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 6] total 20 [2023-08-30 05:44:47,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795360334] [2023-08-30 05:44:47,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:44:47,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-30 05:44:47,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:44:47,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-30 05:44:47,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-08-30 05:44:47,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 205 [2023-08-30 05:44:47,286 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 473 transitions, 6695 flow. Second operand has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:47,286 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:44:47,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 205 [2023-08-30 05:44:47,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:44:48,093 INFO L130 PetriNetUnfolder]: 831/1394 cut-off events. [2023-08-30 05:44:48,094 INFO L131 PetriNetUnfolder]: For 3643/3643 co-relation queries the response was YES. [2023-08-30 05:44:48,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9523 conditions, 1394 events. 831/1394 cut-off events. For 3643/3643 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6783 event pairs, 12 based on Foata normal form. 6/1400 useless extension candidates. Maximal degree in co-relation 9489. Up to 527 conditions per place. [2023-08-30 05:44:48,100 INFO L137 encePairwiseOnDemand]: 199/205 looper letters, 0 selfloop transitions, 0 changer transitions 531/531 dead transitions. [2023-08-30 05:44:48,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 531 transitions, 8291 flow [2023-08-30 05:44:48,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 05:44:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 05:44:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1202 transitions. [2023-08-30 05:44:48,103 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3449067431850789 [2023-08-30 05:44:48,103 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1202 transitions. [2023-08-30 05:44:48,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1202 transitions. [2023-08-30 05:44:48,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:44:48,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1202 transitions. [2023-08-30 05:44:48,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 70.70588235294117) internal successors, (1202), 17 states have internal predecessors, (1202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:48,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:48,109 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 205.0) internal successors, (3690), 18 states have internal predecessors, (3690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:48,109 INFO L175 Difference]: Start difference. First operand has 149 places, 473 transitions, 6695 flow. Second operand 17 states and 1202 transitions. [2023-08-30 05:44:48,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 531 transitions, 8291 flow [2023-08-30 05:44:48,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 531 transitions, 8033 flow, removed 46 selfloop flow, removed 8 redundant places. [2023-08-30 05:44:48,166 INFO L231 Difference]: Finished difference. Result has 151 places, 0 transitions, 0 flow [2023-08-30 05:44:48,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=6439, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=472, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=0, PETRI_PLACES=151, PETRI_TRANSITIONS=0} [2023-08-30 05:44:48,167 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 124 predicate places. [2023-08-30 05:44:48,167 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 0 transitions, 0 flow [2023-08-30 05:44:48,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 68.95454545454545) internal successors, (1517), 22 states have internal predecessors, (1517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:44:48,169 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 05:44:48,170 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 05:44:48,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 05:44:48,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 05:44:48,171 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 05:44:48,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:44:48,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 05:44:48,395 INFO L445 BasicCegarLoop]: Path program histogram: [8, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:44:48,399 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:44:48,400 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:44:48,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:44:48 BasicIcfg [2023-08-30 05:44:48,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:44:48,403 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:44:48,403 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:44:48,403 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:44:48,403 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:44:26" (3/4) ... [2023-08-30 05:44:48,405 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:44:48,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:44:48,410 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:44:48,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 05:44:48,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:44:48,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:44:48,414 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:44:48,436 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:44:48,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:44:48,437 INFO L158 Benchmark]: Toolchain (without parser) took 22842.83ms. Allocated memory was 90.2MB in the beginning and 541.1MB in the end (delta: 450.9MB). Free memory was 68.2MB in the beginning and 441.7MB in the end (delta: -373.5MB). Peak memory consumption was 80.5MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,437 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 65.0MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:44:48,437 INFO L158 Benchmark]: CACSL2BoogieTranslator took 176.98ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 57.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,437 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.97ms. Allocated memory is still 90.2MB. Free memory was 57.1MB in the beginning and 55.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,438 INFO L158 Benchmark]: Boogie Preprocessor took 40.09ms. Allocated memory is still 90.2MB. Free memory was 55.4MB in the beginning and 54.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:44:48,438 INFO L158 Benchmark]: RCFGBuilder took 485.12ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 62.1MB in the end (delta: -8.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,438 INFO L158 Benchmark]: TraceAbstraction took 22075.37ms. Allocated memory was 90.2MB in the beginning and 541.1MB in the end (delta: 450.9MB). Free memory was 61.5MB in the beginning and 444.2MB in the end (delta: -382.6MB). Peak memory consumption was 330.2MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,439 INFO L158 Benchmark]: Witness Printer took 33.65ms. Allocated memory is still 541.1MB. Free memory was 444.2MB in the beginning and 441.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:44:48,440 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 65.0MB. Free memory is still 42.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 176.98ms. Allocated memory is still 90.2MB. Free memory was 67.9MB in the beginning and 57.1MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.97ms. Allocated memory is still 90.2MB. Free memory was 57.1MB in the beginning and 55.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.09ms. Allocated memory is still 90.2MB. Free memory was 55.4MB in the beginning and 54.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 485.12ms. Allocated memory is still 90.2MB. Free memory was 54.1MB in the beginning and 62.1MB in the end (delta: -8.0MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * TraceAbstraction took 22075.37ms. Allocated memory was 90.2MB in the beginning and 541.1MB in the end (delta: 450.9MB). Free memory was 61.5MB in the beginning and 444.2MB in the end (delta: -382.6MB). Peak memory consumption was 330.2MB. Max. memory is 16.1GB. * Witness Printer took 33.65ms. Allocated memory is still 541.1MB. Free memory was 444.2MB in the beginning and 441.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 94 PlacesBefore, 27 PlacesAfterwards, 98 TransitionsBefore, 22 TransitionsAfterwards, 1476 CoEnabledTransitionPairs, 6 FixpointIterations, 42 TrivialSequentialCompositions, 42 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 101 TotalNumberOfCompositions, 1479 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1423, independent: 1417, independent conditional: 0, independent unconditional: 1417, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 763, independent: 759, independent conditional: 0, independent unconditional: 759, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1423, independent: 658, independent conditional: 0, independent unconditional: 658, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 763, unknown conditional: 0, unknown unconditional: 763] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 101]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 85]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 124 locations, 12 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: 22.0s, OverallIterations: 15, TraceHistogramMax: 4, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 7.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1537 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1307 mSDsluCounter, 877 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 852 mSDsCounter, 438 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3546 IncrementalHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 438 mSolverCounterUnsat, 25 mSDtfsCounter, 3546 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 149 SyntacticMatches, 13 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1745 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9679occurred in iteration=12, InterpolantAutomatonStates: 174, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 375 ConstructedInterpolants, 0 QuantifiedInterpolants, 4477 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1018 ConjunctsInSsa, 125 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 19/172 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 05:44:48,455 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 Writing output log to file Ultimate.log Result: TRUE