./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.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 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:26:19,546 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:26:19,547 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:26:19,588 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:26:19,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:26:19,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:26:19,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:26:19,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:26:19,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:26:19,603 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:26:19,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:26:19,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:26:19,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:26:19,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:26:19,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:26:19,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:26:19,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:26:19,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:26:19,620 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:26:19,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:26:19,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:26:19,634 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:26:19,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:26:19,636 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:26:19,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:26:19,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:26:19,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:26:19,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:26:19,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:26:19,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:26:19,649 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:26:19,650 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:26:19,651 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:26:19,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:26:19,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:26:19,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:26:19,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:26:19,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:26:19,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:26:19,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:26:19,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:26:19,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:26:19,700 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:26:19,700 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:26:19,701 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:26:19,701 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:26:19,702 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:26:19,702 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:26:19,703 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:26:19,703 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:26:19,703 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:26:19,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:26:19,705 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:26:19,705 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:26:19,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:26:19,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:26:19,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:26:19,706 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:26:19,707 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:26:19,707 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:26:19,707 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:26:19,707 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:26:19,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:26:19,708 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:26:19,708 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:26:19,708 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:26:19,708 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:26:19,709 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:26:19,709 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:26:19,709 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:26:19,709 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:26:19,709 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:26:20,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:26:20,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:26:20,068 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:26:20,069 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:26:20,070 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:26:20,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-09-01 02:26:21,235 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:26:21,419 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:26:21,419 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-09-01 02:26:21,426 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d493df6c2/ce9f5cd4ab014b39852c1b674dbf379d/FLAG31ffa9900 [2023-09-01 02:26:21,439 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d493df6c2/ce9f5cd4ab014b39852c1b674dbf379d [2023-09-01 02:26:21,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:26:21,442 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:26:21,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:26:21,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:26:21,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:26:21,447 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78326192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21, skipping insertion in model container [2023-09-01 02:26:21,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:26:21,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:26:21,661 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-5.wvr.c[3027,3040] [2023-09-01 02:26:21,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:26:21,681 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:26:21,723 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-5.wvr.c[3027,3040] [2023-09-01 02:26:21,726 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:26:21,735 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:26:21,736 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:26:21,741 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:26:21,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21 WrapperNode [2023-09-01 02:26:21,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:26:21,744 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:26:21,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:26:21,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:26:21,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,769 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,800 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2023-09-01 02:26:21,801 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:26:21,801 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:26:21,802 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:26:21,802 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:26:21,810 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,822 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,843 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:26:21,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:26:21,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:26:21,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:26:21,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (1/1) ... [2023-09-01 02:26:21,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:26:21,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:21,884 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:26:21,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:26:21,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:26:21,934 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:26:21,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:26:21,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:26:21,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:26:21,935 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:26:21,935 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:26:21,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:26:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:26:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:26:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:26:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:26:21,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:26:21,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:26:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:26:21,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:26:21,938 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:26:22,023 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:26:22,025 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:26:22,407 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:26:22,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:26:22,501 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 02:26:22,504 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:26:22 BoogieIcfgContainer [2023-09-01 02:26:22,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:26:22,506 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:26:22,506 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:26:22,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:26:22,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:26:21" (1/3) ... [2023-09-01 02:26:22,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4229b5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:26:22, skipping insertion in model container [2023-09-01 02:26:22,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:26:21" (2/3) ... [2023-09-01 02:26:22,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4229b5a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:26:22, skipping insertion in model container [2023-09-01 02:26:22,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:26:22" (3/3) ... [2023-09-01 02:26:22,511 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-09-01 02:26:22,525 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:26:22,525 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 02:26:22,526 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:26:22,607 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 02:26:22,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2023-09-01 02:26:22,700 INFO L130 PetriNetUnfolder]: 7/122 cut-off events. [2023-09-01 02:26:22,702 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:26:22,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 7/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-09-01 02:26:22,710 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 125 transitions, 274 flow [2023-09-01 02:26:22,716 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 118 transitions, 254 flow [2023-09-01 02:26:22,720 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:26:22,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 118 transitions, 254 flow [2023-09-01 02:26:22,735 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 118 transitions, 254 flow [2023-09-01 02:26:22,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 118 transitions, 254 flow [2023-09-01 02:26:22,766 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-09-01 02:26:22,767 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:26:22,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 7/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-09-01 02:26:22,771 INFO L119 LiptonReduction]: Number of co-enabled transitions 1742 [2023-09-01 02:26:26,851 INFO L134 LiptonReduction]: Checked pairs total: 2832 [2023-09-01 02:26:26,851 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-09-01 02:26:26,861 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:26:26,866 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;@72780ce3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:26:26,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 02:26:26,869 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-09-01 02:26:26,869 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:26,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:26,870 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:26:26,870 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:26,874 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:26,874 INFO L85 PathProgramCache]: Analyzing trace with hash 532, now seen corresponding path program 1 times [2023-09-01 02:26:26,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:26,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140641926] [2023-09-01 02:26:26,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:26,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:26,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140641926] [2023-09-01 02:26:26,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140641926] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:26,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:26,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:26:26,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662849488] [2023-09-01 02:26:26,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:26,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:26:26,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:27,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:26:27,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:26:27,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-09-01 02:26:27,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:27,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-09-01 02:26:27,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:27,168 INFO L130 PetriNetUnfolder]: 207/366 cut-off events. [2023-09-01 02:26:27,169 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 02:26:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 366 events. 207/366 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1741 event pairs, 203 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 612. Up to 359 conditions per place. [2023-09-01 02:26:27,174 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-09-01 02:26:27,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 138 flow [2023-09-01 02:26:27,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:26:27,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:26:27,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2023-09-01 02:26:27,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524896265560166 [2023-09-01 02:26:27,192 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2023-09-01 02:26:27,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2023-09-01 02:26:27,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:27,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2023-09-01 02:26:27,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,206 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,208 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 253 transitions. [2023-09-01 02:26:27,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 138 flow [2023-09-01 02:26:27,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:26:27,214 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2023-09-01 02:26:27,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-09-01 02:26:27,219 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:26:27,219 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2023-09-01 02:26:27,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,220 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:27,221 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:26:27,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:26:27,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:27,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:27,232 INFO L85 PathProgramCache]: Analyzing trace with hash 525433, now seen corresponding path program 1 times [2023-09-01 02:26:27,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:27,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107719366] [2023-09-01 02:26:27,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:27,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:27,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:27,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:27,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107719366] [2023-09-01 02:26:27,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107719366] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:27,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:27,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:26:27,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523765946] [2023-09-01 02:26:27,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:27,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:26:27,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:27,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:26:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:26:27,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-09-01 02:26:27,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:27,700 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-09-01 02:26:27,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:27,774 INFO L130 PetriNetUnfolder]: 198/348 cut-off events. [2023-09-01 02:26:27,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:27,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 348 events. 198/348 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1630 event pairs, 194 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 701. Up to 340 conditions per place. [2023-09-01 02:26:27,777 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-09-01 02:26:27,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 118 flow [2023-09-01 02:26:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-09-01 02:26:27,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578146611341632 [2023-09-01 02:26:27,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-09-01 02:26:27,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-09-01 02:26:27,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:27,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-09-01 02:26:27,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,787 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 331 transitions. [2023-09-01 02:26:27,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 118 flow [2023-09-01 02:26:27,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:26:27,789 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2023-09-01 02:26:27,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-09-01 02:26:27,790 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:26:27,790 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2023-09-01 02:26:27,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:27,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:26:27,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:26:27,801 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:27,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:27,803 INFO L85 PathProgramCache]: Analyzing trace with hash 525435, now seen corresponding path program 1 times [2023-09-01 02:26:27,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171225231] [2023-09-01 02:26:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:27,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:27,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:27,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:27,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171225231] [2023-09-01 02:26:27,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171225231] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:27,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:27,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:26:27,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535851645] [2023-09-01 02:26:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:26:27,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:26:27,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:26:27,992 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 241 [2023-09-01 02:26:27,992 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:27,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:27,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 241 [2023-09-01 02:26:27,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:28,054 INFO L130 PetriNetUnfolder]: 189/330 cut-off events. [2023-09-01 02:26:28,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:28,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 330 events. 189/330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1540 event pairs, 185 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 666. Up to 322 conditions per place. [2023-09-01 02:26:28,057 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 02:26:28,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 112 flow [2023-09-01 02:26:28,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:28,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:28,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-09-01 02:26:28,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47579529737206083 [2023-09-01 02:26:28,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-09-01 02:26:28,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-09-01 02:26:28,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:28,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-09-01 02:26:28,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,067 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 344 transitions. [2023-09-01 02:26:28,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 112 flow [2023-09-01 02:26:28,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:28,069 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-09-01 02:26:28,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-09-01 02:26:28,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-09-01 02:26:28,073 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-09-01 02:26:28,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,073 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:28,073 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:26:28,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:26:28,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:28,074 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:28,074 INFO L85 PathProgramCache]: Analyzing trace with hash 504954454, now seen corresponding path program 1 times [2023-09-01 02:26:28,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:28,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077921035] [2023-09-01 02:26:28,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:28,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:28,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:28,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:28,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:28,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077921035] [2023-09-01 02:26:28,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077921035] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:28,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:28,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:26:28,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142251772] [2023-09-01 02:26:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:28,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:26:28,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:26:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:26:28,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-09-01 02:26:28,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:28,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-09-01 02:26:28,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:28,226 INFO L130 PetriNetUnfolder]: 176/306 cut-off events. [2023-09-01 02:26:28,227 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:28,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 306 events. 176/306 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1401 event pairs, 172 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 619. Up to 298 conditions per place. [2023-09-01 02:26:28,229 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 02:26:28,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 105 flow [2023-09-01 02:26:28,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:28,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-09-01 02:26:28,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45228215767634855 [2023-09-01 02:26:28,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-09-01 02:26:28,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-09-01 02:26:28,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:28,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-09-01 02:26:28,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,234 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 327 transitions. [2023-09-01 02:26:28,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 105 flow [2023-09-01 02:26:28,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:28,236 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2023-09-01 02:26:28,236 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-09-01 02:26:28,237 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-09-01 02:26:28,237 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2023-09-01 02:26:28,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:28,237 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:26:28,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:26:28,238 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:28,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 504954456, now seen corresponding path program 1 times [2023-09-01 02:26:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:28,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163571689] [2023-09-01 02:26:28,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:28,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:28,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:28,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:28,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163571689] [2023-09-01 02:26:28,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163571689] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:28,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:28,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:26:28,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329997336] [2023-09-01 02:26:28,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:28,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:26:28,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:28,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:26:28,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:26:28,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 241 [2023-09-01 02:26:28,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:28,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 241 [2023-09-01 02:26:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:28,382 INFO L130 PetriNetUnfolder]: 163/282 cut-off events. [2023-09-01 02:26:28,383 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:28,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 282 events. 163/282 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1226 event pairs, 159 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 572. Up to 274 conditions per place. [2023-09-01 02:26:28,386 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 19 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 02:26:28,386 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 98 flow [2023-09-01 02:26:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:28,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-09-01 02:26:28,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702627939142462 [2023-09-01 02:26:28,388 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-09-01 02:26:28,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-09-01 02:26:28,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:28,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-09-01 02:26:28,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,391 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 340 transitions. [2023-09-01 02:26:28,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 98 flow [2023-09-01 02:26:28,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:28,393 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2023-09-01 02:26:28,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 02:26:28,395 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:26:28,396 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2023-09-01 02:26:28,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:28,396 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:28,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:26:28,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:28,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash -70060904, now seen corresponding path program 1 times [2023-09-01 02:26:28,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439991992] [2023-09-01 02:26:28,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:28,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:28,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439991992] [2023-09-01 02:26:28,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439991992] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:28,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:26:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825186253] [2023-09-01 02:26:28,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:28,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:26:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:28,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:26:28,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:26:28,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-09-01 02:26:28,486 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,486 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:28,486 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-09-01 02:26:28,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:28,528 INFO L130 PetriNetUnfolder]: 130/231 cut-off events. [2023-09-01 02:26:28,529 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:28,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 231 events. 130/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 959 event pairs, 126 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 471. Up to 223 conditions per place. [2023-09-01 02:26:28,530 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 18 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 02:26:28,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 95 flow [2023-09-01 02:26:28,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:28,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:28,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-09-01 02:26:28,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508990318118949 [2023-09-01 02:26:28,532 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-09-01 02:26:28,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-09-01 02:26:28,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:28,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-09-01 02:26:28,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,536 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,536 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 326 transitions. [2023-09-01 02:26:28,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 95 flow [2023-09-01 02:26:28,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:28,537 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2023-09-01 02:26:28,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-09-01 02:26:28,538 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:26:28,538 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2023-09-01 02:26:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:28,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:28,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:26:28,539 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:28,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:28,539 INFO L85 PathProgramCache]: Analyzing trace with hash -70060903, now seen corresponding path program 1 times [2023-09-01 02:26:28,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:28,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494428853] [2023-09-01 02:26:28,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:28,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:28,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:28,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:28,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:28,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494428853] [2023-09-01 02:26:28,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494428853] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:28,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:28,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:26:28,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579798652] [2023-09-01 02:26:28,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:28,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:26:28,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:28,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:26:28,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:26:28,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 241 [2023-09-01 02:26:28,744 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:28,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 241 [2023-09-01 02:26:28,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:28,797 INFO L130 PetriNetUnfolder]: 97/180 cut-off events. [2023-09-01 02:26:28,797 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:28,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 180 events. 97/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 696 event pairs, 93 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 370. Up to 172 conditions per place. [2023-09-01 02:26:28,799 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 17 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 02:26:28,799 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 92 flow [2023-09-01 02:26:28,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:26:28,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:26:28,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-09-01 02:26:28,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41217150760719223 [2023-09-01 02:26:28,800 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-09-01 02:26:28,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-09-01 02:26:28,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:28,801 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-09-01 02:26:28,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,804 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,804 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 298 transitions. [2023-09-01 02:26:28,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 92 flow [2023-09-01 02:26:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:28,805 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2023-09-01 02:26:28,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-09-01 02:26:28,806 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:26:28,806 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2023-09-01 02:26:28,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:28,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:28,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:28,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:26:28,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:28,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1375800109, now seen corresponding path program 1 times [2023-09-01 02:26:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918570899] [2023-09-01 02:26:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:29,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:29,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:29,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918570899] [2023-09-01 02:26:29,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918570899] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:29,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:29,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:26:29,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604738999] [2023-09-01 02:26:29,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:29,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:26:29,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:29,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:26:29,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:26:29,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-09-01 02:26:29,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:29,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-09-01 02:26:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:29,276 INFO L130 PetriNetUnfolder]: 109/187 cut-off events. [2023-09-01 02:26:29,276 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:26:29,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 187 events. 109/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 699 event pairs, 6 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 391. Up to 85 conditions per place. [2023-09-01 02:26:29,277 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-09-01 02:26:29,277 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-09-01 02:26:29,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:26:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:26:29,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-09-01 02:26:29,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47199170124481327 [2023-09-01 02:26:29,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-09-01 02:26:29,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-09-01 02:26:29,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:29,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-09-01 02:26:29,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,283 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 455 transitions. [2023-09-01 02:26:29,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-09-01 02:26:29,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:26:29,285 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2023-09-01 02:26:29,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-09-01 02:26:29,286 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:26:29,286 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2023-09-01 02:26:29,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:29,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:29,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:26:29,287 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:29,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:29,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1117417239, now seen corresponding path program 2 times [2023-09-01 02:26:29,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:29,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996124968] [2023-09-01 02:26:29,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:29,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:29,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:29,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996124968] [2023-09-01 02:26:29,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996124968] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:29,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:29,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:26:29,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240257985] [2023-09-01 02:26:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:26:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:29,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:26:29,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:26:29,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-09-01 02:26:29,624 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,625 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:29,625 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-09-01 02:26:29,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:29,713 INFO L130 PetriNetUnfolder]: 98/172 cut-off events. [2023-09-01 02:26:29,713 INFO L131 PetriNetUnfolder]: For 19/32 co-relation queries the response was YES. [2023-09-01 02:26:29,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 172 events. 98/172 cut-off events. For 19/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 487 event pairs, 9 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 386. Up to 103 conditions per place. [2023-09-01 02:26:29,715 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-09-01 02:26:29,715 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 165 flow [2023-09-01 02:26:29,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:26:29,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:26:29,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-09-01 02:26:29,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678423236514523 [2023-09-01 02:26:29,717 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-09-01 02:26:29,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-09-01 02:26:29,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:29,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-09-01 02:26:29,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,721 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 451 transitions. [2023-09-01 02:26:29,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 165 flow [2023-09-01 02:26:29,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:29,723 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-09-01 02:26:29,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-09-01 02:26:29,724 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-09-01 02:26:29,724 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-09-01 02:26:29,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:29,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:29,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:29,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:26:29,725 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:29,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:29,726 INFO L85 PathProgramCache]: Analyzing trace with hash -887585303, now seen corresponding path program 3 times [2023-09-01 02:26:29,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:29,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573964992] [2023-09-01 02:26:29,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:29,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:29,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:29,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573964992] [2023-09-01 02:26:29,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573964992] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:29,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:29,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:26:29,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530146162] [2023-09-01 02:26:29,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:29,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:26:29,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:29,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:26:29,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:26:30,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 241 [2023-09-01 02:26:30,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:30,026 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 241 [2023-09-01 02:26:30,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:30,130 INFO L130 PetriNetUnfolder]: 122/214 cut-off events. [2023-09-01 02:26:30,130 INFO L131 PetriNetUnfolder]: For 81/91 co-relation queries the response was YES. [2023-09-01 02:26:30,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 214 events. 122/214 cut-off events. For 81/91 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 649 event pairs, 13 based on Foata normal form. 18/232 useless extension candidates. Maximal degree in co-relation 526. Up to 71 conditions per place. [2023-09-01 02:26:30,132 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-09-01 02:26:30,132 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 210 flow [2023-09-01 02:26:30,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:26:30,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:26:30,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-09-01 02:26:30,134 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46224066390041496 [2023-09-01 02:26:30,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-09-01 02:26:30,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-09-01 02:26:30,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:30,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-09-01 02:26:30,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,139 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,139 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 557 transitions. [2023-09-01 02:26:30,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 210 flow [2023-09-01 02:26:30,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:26:30,141 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2023-09-01 02:26:30,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-09-01 02:26:30,142 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-09-01 02:26:30,142 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2023-09-01 02:26:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:30,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:26:30,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:30,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1479768159, now seen corresponding path program 4 times [2023-09-01 02:26:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071838542] [2023-09-01 02:26:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:30,324 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:30,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:30,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071838542] [2023-09-01 02:26:30,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071838542] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:30,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:30,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:26:30,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722013678] [2023-09-01 02:26:30,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:30,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:26:30,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:30,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:26:30,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:26:30,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 241 [2023-09-01 02:26:30,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:30,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 241 [2023-09-01 02:26:30,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:30,501 INFO L130 PetriNetUnfolder]: 213/366 cut-off events. [2023-09-01 02:26:30,501 INFO L131 PetriNetUnfolder]: For 374/387 co-relation queries the response was YES. [2023-09-01 02:26:30,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 366 events. 213/366 cut-off events. For 374/387 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1333 event pairs, 13 based on Foata normal form. 27/393 useless extension candidates. Maximal degree in co-relation 1012. Up to 202 conditions per place. [2023-09-01 02:26:30,504 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 30 selfloop transitions, 3 changer transitions 24/60 dead transitions. [2023-09-01 02:26:30,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 368 flow [2023-09-01 02:26:30,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:26:30,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:26:30,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-09-01 02:26:30,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576170717249555 [2023-09-01 02:26:30,507 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-09-01 02:26:30,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-09-01 02:26:30,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:30,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-09-01 02:26:30,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,512 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,512 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 772 transitions. [2023-09-01 02:26:30,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 368 flow [2023-09-01 02:26:30,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:26:30,515 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2023-09-01 02:26:30,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2023-09-01 02:26:30,516 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-09-01 02:26:30,516 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2023-09-01 02:26:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:30,517 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:30,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:26:30,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:30,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:30,518 INFO L85 PathProgramCache]: Analyzing trace with hash 713292988, now seen corresponding path program 1 times [2023-09-01 02:26:30,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:30,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021796953] [2023-09-01 02:26:30,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:30,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:30,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:30,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021796953] [2023-09-01 02:26:30,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021796953] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:30,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:30,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:26:30,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323495047] [2023-09-01 02:26:30,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:30,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:26:30,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:30,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:26:30,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:26:30,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-09-01 02:26:30,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:30,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:30,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-09-01 02:26:30,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:31,015 INFO L130 PetriNetUnfolder]: 246/409 cut-off events. [2023-09-01 02:26:31,015 INFO L131 PetriNetUnfolder]: For 720/720 co-relation queries the response was YES. [2023-09-01 02:26:31,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 409 events. 246/409 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1274 event pairs, 0 based on Foata normal form. 20/429 useless extension candidates. Maximal degree in co-relation 1511. Up to 137 conditions per place. [2023-09-01 02:26:31,019 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 61 selfloop transitions, 17 changer transitions 8/86 dead transitions. [2023-09-01 02:26:31,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 599 flow [2023-09-01 02:26:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:26:31,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:26:31,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 989 transitions. [2023-09-01 02:26:31,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45597049331489165 [2023-09-01 02:26:31,023 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 989 transitions. [2023-09-01 02:26:31,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 989 transitions. [2023-09-01 02:26:31,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:31,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 989 transitions. [2023-09-01 02:26:31,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.88888888888889) internal successors, (989), 9 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,030 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,030 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 9 states and 989 transitions. [2023-09-01 02:26:31,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 599 flow [2023-09-01 02:26:31,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 570 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-09-01 02:26:31,036 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 294 flow [2023-09-01 02:26:31,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-09-01 02:26:31,036 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-09-01 02:26:31,036 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 294 flow [2023-09-01 02:26:31,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,037 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:31,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:31,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:26:31,037 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:31,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash 997634328, now seen corresponding path program 2 times [2023-09-01 02:26:31,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:31,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584234263] [2023-09-01 02:26:31,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:31,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:31,262 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:31,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:31,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584234263] [2023-09-01 02:26:31,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584234263] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:31,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:31,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:26:31,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184971634] [2023-09-01 02:26:31,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:31,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:26:31,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:31,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:26:31,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:26:31,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-09-01 02:26:31,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:31,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-09-01 02:26:31,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:31,497 INFO L130 PetriNetUnfolder]: 287/537 cut-off events. [2023-09-01 02:26:31,497 INFO L131 PetriNetUnfolder]: For 2643/2670 co-relation queries the response was YES. [2023-09-01 02:26:31,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 537 events. 287/537 cut-off events. For 2643/2670 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2260 event pairs, 20 based on Foata normal form. 49/584 useless extension candidates. Maximal degree in co-relation 2440. Up to 271 conditions per place. [2023-09-01 02:26:31,502 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 41 selfloop transitions, 5 changer transitions 40/94 dead transitions. [2023-09-01 02:26:31,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 834 flow [2023-09-01 02:26:31,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:26:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:26:31,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 883 transitions. [2023-09-01 02:26:31,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579875518672199 [2023-09-01 02:26:31,505 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 883 transitions. [2023-09-01 02:26:31,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 883 transitions. [2023-09-01 02:26:31,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:31,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 883 transitions. [2023-09-01 02:26:31,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,520 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,520 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 294 flow. Second operand 8 states and 883 transitions. [2023-09-01 02:26:31,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 834 flow [2023-09-01 02:26:31,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 789 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 02:26:31,528 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 336 flow [2023-09-01 02:26:31,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2023-09-01 02:26:31,529 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-09-01 02:26:31,529 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 336 flow [2023-09-01 02:26:31,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:31,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:31,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:26:31,530 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:31,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1824714705, now seen corresponding path program 1 times [2023-09-01 02:26:31,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:31,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435556909] [2023-09-01 02:26:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:31,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:31,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:31,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:31,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435556909] [2023-09-01 02:26:31,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435556909] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:26:31,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:26:31,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:26:31,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800805753] [2023-09-01 02:26:31,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:26:31,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:26:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:31,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:26:31,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:26:31,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-09-01 02:26:31,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:31,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:31,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-09-01 02:26:31,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:32,016 INFO L130 PetriNetUnfolder]: 298/530 cut-off events. [2023-09-01 02:26:32,016 INFO L131 PetriNetUnfolder]: For 4458/4493 co-relation queries the response was YES. [2023-09-01 02:26:32,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 530 events. 298/530 cut-off events. For 4458/4493 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2080 event pairs, 25 based on Foata normal form. 49/574 useless extension candidates. Maximal degree in co-relation 2880. Up to 317 conditions per place. [2023-09-01 02:26:32,021 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 43 selfloop transitions, 5 changer transitions 30/84 dead transitions. [2023-09-01 02:26:32,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 881 flow [2023-09-01 02:26:32,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:26:32,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:26:32,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 873 transitions. [2023-09-01 02:26:32,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528008298755187 [2023-09-01 02:26:32,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 873 transitions. [2023-09-01 02:26:32,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 873 transitions. [2023-09-01 02:26:32,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:32,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 873 transitions. [2023-09-01 02:26:32,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.125) internal successors, (873), 8 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:32,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:32,031 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:32,031 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 336 flow. Second operand 8 states and 873 transitions. [2023-09-01 02:26:32,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 881 flow [2023-09-01 02:26:32,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 842 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-09-01 02:26:32,043 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 386 flow [2023-09-01 02:26:32,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2023-09-01 02:26:32,044 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-09-01 02:26:32,044 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 386 flow [2023-09-01 02:26:32,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:32,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:32,045 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:32,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:26:32,045 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:32,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:32,046 INFO L85 PathProgramCache]: Analyzing trace with hash 406016123, now seen corresponding path program 3 times [2023-09-01 02:26:32,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:32,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830669688] [2023-09-01 02:26:32,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:32,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:32,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:32,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:32,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830669688] [2023-09-01 02:26:32,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830669688] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:32,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595476273] [2023-09-01 02:26:32,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:26:32,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:32,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:32,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:26:32,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 02:26:32,428 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:26:32,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:32,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 02:26:32,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:32,699 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:32,701 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:33,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595476273] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:33,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 02:26:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782179291] [2023-09-01 02:26:33,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:26:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:26:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:26:33,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 241 [2023-09-01 02:26:33,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 386 flow. Second operand has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:33,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:33,238 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 241 [2023-09-01 02:26:33,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:34,691 INFO L130 PetriNetUnfolder]: 766/1309 cut-off events. [2023-09-01 02:26:34,692 INFO L131 PetriNetUnfolder]: For 13813/13813 co-relation queries the response was YES. [2023-09-01 02:26:34,697 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 1309 events. 766/1309 cut-off events. For 13813/13813 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5895 event pairs, 17 based on Foata normal form. 112/1421 useless extension candidates. Maximal degree in co-relation 7671. Up to 367 conditions per place. [2023-09-01 02:26:34,704 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 121 selfloop transitions, 49 changer transitions 132/302 dead transitions. [2023-09-01 02:26:34,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 302 transitions, 3484 flow [2023-09-01 02:26:34,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-09-01 02:26:34,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-09-01 02:26:34,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4363 transitions. [2023-09-01 02:26:34,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310412961865244 [2023-09-01 02:26:34,718 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4363 transitions. [2023-09-01 02:26:34,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4363 transitions. [2023-09-01 02:26:34,721 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:34,721 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4363 transitions. [2023-09-01 02:26:34,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 103.88095238095238) internal successors, (4363), 42 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:34,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 241.0) internal successors, (10363), 43 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:34,750 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 241.0) internal successors, (10363), 43 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:34,750 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 386 flow. Second operand 42 states and 4363 transitions. [2023-09-01 02:26:34,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 302 transitions, 3484 flow [2023-09-01 02:26:34,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 302 transitions, 3157 flow, removed 159 selfloop flow, removed 6 redundant places. [2023-09-01 02:26:34,779 INFO L231 Difference]: Finished difference. Result has 129 places, 80 transitions, 1067 flow [2023-09-01 02:26:34,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1067, PETRI_PLACES=129, PETRI_TRANSITIONS=80} [2023-09-01 02:26:34,780 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2023-09-01 02:26:34,780 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 80 transitions, 1067 flow [2023-09-01 02:26:34,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:34,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:34,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:34,791 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 02:26:34,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 02:26:34,988 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:34,988 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:34,989 INFO L85 PathProgramCache]: Analyzing trace with hash -516671809, now seen corresponding path program 2 times [2023-09-01 02:26:34,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:34,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434443626] [2023-09-01 02:26:34,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:34,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:35,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:35,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434443626] [2023-09-01 02:26:35,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434443626] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:35,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557054910] [2023-09-01 02:26:35,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:26:35,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:35,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:35,275 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:26:35,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 02:26:35,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:26:35,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:35,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 02:26:35,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:35,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557054910] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:35,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:35,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-09-01 02:26:35,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357973033] [2023-09-01 02:26:35,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:35,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-09-01 02:26:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:35,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-09-01 02:26:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-09-01 02:26:35,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 241 [2023-09-01 02:26:35,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 80 transitions, 1067 flow. Second operand has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:35,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:35,993 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 241 [2023-09-01 02:26:35,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:37,297 INFO L130 PetriNetUnfolder]: 977/1652 cut-off events. [2023-09-01 02:26:37,298 INFO L131 PetriNetUnfolder]: For 37620/37620 co-relation queries the response was YES. [2023-09-01 02:26:37,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11556 conditions, 1652 events. 977/1652 cut-off events. For 37620/37620 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7681 event pairs, 37 based on Foata normal form. 86/1738 useless extension candidates. Maximal degree in co-relation 11509. Up to 449 conditions per place. [2023-09-01 02:26:37,318 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 144 selfloop transitions, 59 changer transitions 103/306 dead transitions. [2023-09-01 02:26:37,319 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 306 transitions, 4197 flow [2023-09-01 02:26:37,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-09-01 02:26:37,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-09-01 02:26:37,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3943 transitions. [2023-09-01 02:26:37,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305525223848002 [2023-09-01 02:26:37,328 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3943 transitions. [2023-09-01 02:26:37,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3943 transitions. [2023-09-01 02:26:37,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:37,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3943 transitions. [2023-09-01 02:26:37,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 103.76315789473684) internal successors, (3943), 38 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:37,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 241.0) internal successors, (9399), 39 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:37,362 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 241.0) internal successors, (9399), 39 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:37,362 INFO L175 Difference]: Start difference. First operand has 129 places, 80 transitions, 1067 flow. Second operand 38 states and 3943 transitions. [2023-09-01 02:26:37,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 306 transitions, 4197 flow [2023-09-01 02:26:37,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 306 transitions, 2819 flow, removed 609 selfloop flow, removed 29 redundant places. [2023-09-01 02:26:37,425 INFO L231 Difference]: Finished difference. Result has 135 places, 116 transitions, 1169 flow [2023-09-01 02:26:37,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1169, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2023-09-01 02:26:37,426 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2023-09-01 02:26:37,426 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 1169 flow [2023-09-01 02:26:37,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:37,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:37,427 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:37,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 02:26:37,633 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,SelfDestructingSolverStorable15 [2023-09-01 02:26:37,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:37,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:37,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1756267247, now seen corresponding path program 1 times [2023-09-01 02:26:37,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:37,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217955204] [2023-09-01 02:26:37,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:37,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:37,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:37,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217955204] [2023-09-01 02:26:37,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217955204] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:37,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048422624] [2023-09-01 02:26:37,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:37,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:38,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:38,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:26:38,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 02:26:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:38,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:26:38,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:38,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:38,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:38,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048422624] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:38,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:38,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-09-01 02:26:38,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260368568] [2023-09-01 02:26:38,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:38,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:26:38,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:38,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:26:38,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:26:39,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:26:39,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 1169 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:39,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:39,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:26:39,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:40,548 INFO L130 PetriNetUnfolder]: 970/1756 cut-off events. [2023-09-01 02:26:40,548 INFO L131 PetriNetUnfolder]: For 34551/34585 co-relation queries the response was YES. [2023-09-01 02:26:40,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10881 conditions, 1756 events. 970/1756 cut-off events. For 34551/34585 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9440 event pairs, 0 based on Foata normal form. 108/1840 useless extension candidates. Maximal degree in co-relation 10835. Up to 360 conditions per place. [2023-09-01 02:26:40,564 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 131 selfloop transitions, 89 changer transitions 96/328 dead transitions. [2023-09-01 02:26:40,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 328 transitions, 3899 flow [2023-09-01 02:26:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-09-01 02:26:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-09-01 02:26:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3758 transitions. [2023-09-01 02:26:40,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331489165514062 [2023-09-01 02:26:40,582 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3758 transitions. [2023-09-01 02:26:40,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3758 transitions. [2023-09-01 02:26:40,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:40,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3758 transitions. [2023-09-01 02:26:40,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 104.38888888888889) internal successors, (3758), 36 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:40,602 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 241.0) internal successors, (8917), 37 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:40,604 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 241.0) internal successors, (8917), 37 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:40,604 INFO L175 Difference]: Start difference. First operand has 135 places, 116 transitions, 1169 flow. Second operand 36 states and 3758 transitions. [2023-09-01 02:26:40,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 328 transitions, 3899 flow [2023-09-01 02:26:40,664 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 328 transitions, 3123 flow, removed 382 selfloop flow, removed 20 redundant places. [2023-09-01 02:26:40,668 INFO L231 Difference]: Finished difference. Result has 142 places, 134 transitions, 1435 flow [2023-09-01 02:26:40,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1435, PETRI_PLACES=142, PETRI_TRANSITIONS=134} [2023-09-01 02:26:40,669 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2023-09-01 02:26:40,669 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 134 transitions, 1435 flow [2023-09-01 02:26:40,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:40,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:40,670 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:40,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-09-01 02:26:40,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:40,876 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:40,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:40,876 INFO L85 PathProgramCache]: Analyzing trace with hash 421416188, now seen corresponding path program 2 times [2023-09-01 02:26:40,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:40,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091655770] [2023-09-01 02:26:40,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:40,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:41,206 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091655770] [2023-09-01 02:26:41,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091655770] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839761763] [2023-09-01 02:26:41,207 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:26:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:41,208 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:26:41,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 02:26:41,304 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:26:41,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:41,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:26:41,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:41,492 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:42,196 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:42,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839761763] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:42,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:42,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-09-01 02:26:42,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023736302] [2023-09-01 02:26:42,197 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:42,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:26:42,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:42,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:26:42,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:26:42,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:26:42,307 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 134 transitions, 1435 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:42,307 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:42,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:26:42,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:43,800 INFO L130 PetriNetUnfolder]: 1157/2091 cut-off events. [2023-09-01 02:26:43,801 INFO L131 PetriNetUnfolder]: For 19718/19735 co-relation queries the response was YES. [2023-09-01 02:26:43,813 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11911 conditions, 2091 events. 1157/2091 cut-off events. For 19718/19735 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11101 event pairs, 20 based on Foata normal form. 99/2178 useless extension candidates. Maximal degree in co-relation 11870. Up to 390 conditions per place. [2023-09-01 02:26:43,824 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 144 selfloop transitions, 89 changer transitions 103/351 dead transitions. [2023-09-01 02:26:43,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 4013 flow [2023-09-01 02:26:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 02:26:43,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 02:26:43,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3465 transitions. [2023-09-01 02:26:43,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43568464730290457 [2023-09-01 02:26:43,830 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3465 transitions. [2023-09-01 02:26:43,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3465 transitions. [2023-09-01 02:26:43,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:43,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3465 transitions. [2023-09-01 02:26:43,836 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 105.0) internal successors, (3465), 33 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:43,844 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 241.0) internal successors, (8194), 34 states have internal predecessors, (8194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:43,846 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 241.0) internal successors, (8194), 34 states have internal predecessors, (8194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:43,846 INFO L175 Difference]: Start difference. First operand has 142 places, 134 transitions, 1435 flow. Second operand 33 states and 3465 transitions. [2023-09-01 02:26:43,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 4013 flow [2023-09-01 02:26:43,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 351 transitions, 3457 flow, removed 254 selfloop flow, removed 21 redundant places. [2023-09-01 02:26:43,911 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 1736 flow [2023-09-01 02:26:43,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1736, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2023-09-01 02:26:43,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2023-09-01 02:26:43,912 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 1736 flow [2023-09-01 02:26:43,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:43,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:43,913 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:43,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 02:26:44,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 02:26:44,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:44,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:44,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1609318232, now seen corresponding path program 3 times [2023-09-01 02:26:44,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:44,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230194427] [2023-09-01 02:26:44,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:44,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:44,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:44,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230194427] [2023-09-01 02:26:44,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230194427] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:44,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341956123] [2023-09-01 02:26:44,629 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:26:44,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:44,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:44,630 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:26:44,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 02:26:44,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 02:26:44,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:44,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 02:26:44,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:45,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:45,836 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:45,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341956123] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:45,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:45,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-09-01 02:26:45,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423573922] [2023-09-01 02:26:45,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:45,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:26:45,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:26:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:26:45,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:26:45,950 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 1736 flow. Second operand has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:45,950 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:45,950 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:26:45,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:48,093 INFO L130 PetriNetUnfolder]: 1514/2748 cut-off events. [2023-09-01 02:26:48,094 INFO L131 PetriNetUnfolder]: For 30910/30972 co-relation queries the response was YES. [2023-09-01 02:26:48,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17001 conditions, 2748 events. 1514/2748 cut-off events. For 30910/30972 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15861 event pairs, 30 based on Foata normal form. 128/2846 useless extension candidates. Maximal degree in co-relation 16961. Up to 600 conditions per place. [2023-09-01 02:26:48,123 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 203 selfloop transitions, 127 changer transitions 126/469 dead transitions. [2023-09-01 02:26:48,123 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 469 transitions, 6106 flow [2023-09-01 02:26:48,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-09-01 02:26:48,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-09-01 02:26:48,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5217 transitions. [2023-09-01 02:26:48,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43294605809128633 [2023-09-01 02:26:48,132 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 5217 transitions. [2023-09-01 02:26:48,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 5217 transitions. [2023-09-01 02:26:48,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:48,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 5217 transitions. [2023-09-01 02:26:48,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 104.34) internal successors, (5217), 50 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:48,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 241.0) internal successors, (12291), 51 states have internal predecessors, (12291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:48,158 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 241.0) internal successors, (12291), 51 states have internal predecessors, (12291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:48,159 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 1736 flow. Second operand 50 states and 5217 transitions. [2023-09-01 02:26:48,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 469 transitions, 6106 flow [2023-09-01 02:26:48,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 469 transitions, 5661 flow, removed 205 selfloop flow, removed 13 redundant places. [2023-09-01 02:26:48,300 INFO L231 Difference]: Finished difference. Result has 181 places, 212 transitions, 2733 flow [2023-09-01 02:26:48,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2733, PETRI_PLACES=181, PETRI_TRANSITIONS=212} [2023-09-01 02:26:48,301 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2023-09-01 02:26:48,301 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 212 transitions, 2733 flow [2023-09-01 02:26:48,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:48,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:48,302 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:48,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 02:26:48,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:48,503 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:48,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:48,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1715267220, now seen corresponding path program 4 times [2023-09-01 02:26:48,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:48,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131950562] [2023-09-01 02:26:48,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:48,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:48,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:49,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:49,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131950562] [2023-09-01 02:26:49,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131950562] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:49,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226614906] [2023-09-01 02:26:49,001 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:26:49,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:49,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:49,002 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) [2023-09-01 02:26:49,005 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 02:26:49,109 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:26:49,110 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:49,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 02:26:49,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:49,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:49,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:50,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:50,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226614906] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:50,205 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:50,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-09-01 02:26:50,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001923346] [2023-09-01 02:26:50,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:50,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:26:50,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:50,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:26:50,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:26:50,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:26:50,317 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 212 transitions, 2733 flow. Second operand has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:50,317 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:50,317 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:26:50,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:26:52,740 INFO L130 PetriNetUnfolder]: 2069/3829 cut-off events. [2023-09-01 02:26:52,740 INFO L131 PetriNetUnfolder]: For 54394/54415 co-relation queries the response was YES. [2023-09-01 02:26:52,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25175 conditions, 3829 events. 2069/3829 cut-off events. For 54394/54415 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23727 event pairs, 90 based on Foata normal form. 159/3966 useless extension candidates. Maximal degree in co-relation 25129. Up to 698 conditions per place. [2023-09-01 02:26:52,773 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 271 selfloop transitions, 145 changer transitions 202/643 dead transitions. [2023-09-01 02:26:52,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 643 transitions, 8527 flow [2023-09-01 02:26:52,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-09-01 02:26:52,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-09-01 02:26:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 6094 transitions. [2023-09-01 02:26:52,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359708112748605 [2023-09-01 02:26:52,781 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 6094 transitions. [2023-09-01 02:26:52,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 6094 transitions. [2023-09-01 02:26:52,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:26:52,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 6094 transitions. [2023-09-01 02:26:52,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 105.06896551724138) internal successors, (6094), 58 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:52,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:52,805 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:52,806 INFO L175 Difference]: Start difference. First operand has 181 places, 212 transitions, 2733 flow. Second operand 58 states and 6094 transitions. [2023-09-01 02:26:52,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 643 transitions, 8527 flow [2023-09-01 02:26:52,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 643 transitions, 7615 flow, removed 428 selfloop flow, removed 18 redundant places. [2023-09-01 02:26:52,960 INFO L231 Difference]: Finished difference. Result has 217 places, 277 transitions, 3739 flow [2023-09-01 02:26:52,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=3739, PETRI_PLACES=217, PETRI_TRANSITIONS=277} [2023-09-01 02:26:52,961 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2023-09-01 02:26:52,961 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 277 transitions, 3739 flow [2023-09-01 02:26:52,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:52,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:26:52,962 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:26:52,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 02:26:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:53,168 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:26:53,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:26:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash 2030745743, now seen corresponding path program 5 times [2023-09-01 02:26:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:26:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579519878] [2023-09-01 02:26:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:26:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:26:53,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:26:53,742 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:53,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:26:53,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579519878] [2023-09-01 02:26:53,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579519878] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:26:53,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281291068] [2023-09-01 02:26:53,743 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:26:53,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:26:53,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:26:53,745 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) [2023-09-01 02:26:53,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 02:26:53,847 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-09-01 02:26:53,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:26:53,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:26:53,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:26:54,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:54,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:26:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:26:55,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281291068] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:26:55,491 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:26:55,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-09-01 02:26:55,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446818641] [2023-09-01 02:26:55,491 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:26:55,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 02:26:55,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:26:55,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 02:26:55,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-09-01 02:26:55,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:26:55,637 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 277 transitions, 3739 flow. Second operand has 25 states, 25 states have (on average 100.56) internal successors, (2514), 25 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:26:55,637 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:26:55,637 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:26:55,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:00,012 INFO L130 PetriNetUnfolder]: 2806/5110 cut-off events. [2023-09-01 02:27:00,012 INFO L131 PetriNetUnfolder]: For 88284/88350 co-relation queries the response was YES. [2023-09-01 02:27:00,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36246 conditions, 5110 events. 2806/5110 cut-off events. For 88284/88350 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33290 event pairs, 64 based on Foata normal form. 196/5210 useless extension candidates. Maximal degree in co-relation 36195. Up to 1116 conditions per place. [2023-09-01 02:27:00,059 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 317 selfloop transitions, 231 changer transitions 235/807 dead transitions. [2023-09-01 02:27:00,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 807 transitions, 12241 flow [2023-09-01 02:27:00,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-09-01 02:27:00,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-09-01 02:27:00,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 8032 transitions. [2023-09-01 02:27:00,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328285822061756 [2023-09-01 02:27:00,068 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 8032 transitions. [2023-09-01 02:27:00,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 8032 transitions. [2023-09-01 02:27:00,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:00,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 8032 transitions. [2023-09-01 02:27:00,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 104.31168831168831) internal successors, (8032), 77 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:00,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 241.0) internal successors, (18798), 78 states have internal predecessors, (18798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:00,096 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 241.0) internal successors, (18798), 78 states have internal predecessors, (18798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:00,096 INFO L175 Difference]: Start difference. First operand has 217 places, 277 transitions, 3739 flow. Second operand 77 states and 8032 transitions. [2023-09-01 02:27:00,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 807 transitions, 12241 flow [2023-09-01 02:27:00,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 807 transitions, 10968 flow, removed 609 selfloop flow, removed 23 redundant places. [2023-09-01 02:27:00,368 INFO L231 Difference]: Finished difference. Result has 271 places, 377 transitions, 5516 flow [2023-09-01 02:27:00,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=5516, PETRI_PLACES=271, PETRI_TRANSITIONS=377} [2023-09-01 02:27:00,369 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2023-09-01 02:27:00,369 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 377 transitions, 5516 flow [2023-09-01 02:27:00,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.56) internal successors, (2514), 25 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:00,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:00,370 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:00,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 02:27:00,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:00,576 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:00,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:00,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1662703076, now seen corresponding path program 6 times [2023-09-01 02:27:00,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:00,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071550905] [2023-09-01 02:27:00,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:00,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:00,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:01,146 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:01,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:01,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071550905] [2023-09-01 02:27:01,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071550905] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:01,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824687273] [2023-09-01 02:27:01,147 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:27:01,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:01,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:01,148 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) [2023-09-01 02:27:01,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 02:27:01,302 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-09-01 02:27:01,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:27:01,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:27:01,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:01,790 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:01,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:03,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824687273] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:03,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:03,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-09-01 02:27:03,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192070541] [2023-09-01 02:27:03,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:03,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 02:27:03,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:03,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 02:27:03,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2023-09-01 02:27:03,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:27:03,267 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 377 transitions, 5516 flow. Second operand has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:03,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:03,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:27:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:09,545 INFO L130 PetriNetUnfolder]: 4503/7522 cut-off events. [2023-09-01 02:27:09,546 INFO L131 PetriNetUnfolder]: For 130156/130156 co-relation queries the response was YES. [2023-09-01 02:27:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49005 conditions, 7522 events. 4503/7522 cut-off events. For 130156/130156 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 45701 event pairs, 223 based on Foata normal form. 238/7760 useless extension candidates. Maximal degree in co-relation 48944. Up to 1830 conditions per place. [2023-09-01 02:27:09,617 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 419 selfloop transitions, 274 changer transitions 241/934 dead transitions. [2023-09-01 02:27:09,618 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 934 transitions, 14186 flow [2023-09-01 02:27:09,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-09-01 02:27:09,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-09-01 02:27:09,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9037 transitions. [2023-09-01 02:27:09,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213250034966665 [2023-09-01 02:27:09,628 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9037 transitions. [2023-09-01 02:27:09,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9037 transitions. [2023-09-01 02:27:09,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:09,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9037 transitions. [2023-09-01 02:27:09,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 101.53932584269663) internal successors, (9037), 89 states have internal predecessors, (9037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:09,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:09,661 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:09,662 INFO L175 Difference]: Start difference. First operand has 271 places, 377 transitions, 5516 flow. Second operand 89 states and 9037 transitions. [2023-09-01 02:27:09,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 934 transitions, 14186 flow [2023-09-01 02:27:10,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 934 transitions, 12387 flow, removed 863 selfloop flow, removed 32 redundant places. [2023-09-01 02:27:10,104 INFO L231 Difference]: Finished difference. Result has 346 places, 461 transitions, 7074 flow [2023-09-01 02:27:10,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=4735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=7074, PETRI_PLACES=346, PETRI_TRANSITIONS=461} [2023-09-01 02:27:10,105 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2023-09-01 02:27:10,105 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 461 transitions, 7074 flow [2023-09-01 02:27:10,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:10,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:10,106 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:10,112 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 02:27:10,306 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,SelfDestructingSolverStorable21 [2023-09-01 02:27:10,306 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:10,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:10,307 INFO L85 PathProgramCache]: Analyzing trace with hash -22854786, now seen corresponding path program 7 times [2023-09-01 02:27:10,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:10,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911168743] [2023-09-01 02:27:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:10,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:10,801 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:10,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911168743] [2023-09-01 02:27:10,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911168743] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:10,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842539805] [2023-09-01 02:27:10,802 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:27:10,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:10,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:10,804 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:27:10,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 02:27:10,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:10,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:27:10,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:11,270 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:11,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:12,560 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:12,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842539805] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:12,560 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:12,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-09-01 02:27:12,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287912275] [2023-09-01 02:27:12,560 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:12,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:27:12,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:12,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:27:12,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:27:12,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:27:12,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 461 transitions, 7074 flow. Second operand has 24 states, 24 states have (on average 100.125) internal successors, (2403), 24 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:12,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:12,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:27:12,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:18,274 INFO L130 PetriNetUnfolder]: 4261/7933 cut-off events. [2023-09-01 02:27:18,274 INFO L131 PetriNetUnfolder]: For 479766/479777 co-relation queries the response was YES. [2023-09-01 02:27:18,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73952 conditions, 7933 events. 4261/7933 cut-off events. For 479766/479777 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 57327 event pairs, 168 based on Foata normal form. 327/8210 useless extension candidates. Maximal degree in co-relation 73858. Up to 1490 conditions per place. [2023-09-01 02:27:18,372 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 406 selfloop transitions, 342 changer transitions 320/1109 dead transitions. [2023-09-01 02:27:18,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1109 transitions, 19270 flow [2023-09-01 02:27:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-09-01 02:27:18,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-09-01 02:27:18,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 8299 transitions. [2023-09-01 02:27:18,381 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43589474237092285 [2023-09-01 02:27:18,381 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 8299 transitions. [2023-09-01 02:27:18,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 8299 transitions. [2023-09-01 02:27:18,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:18,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 8299 transitions. [2023-09-01 02:27:18,393 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 105.0506329113924) internal successors, (8299), 79 states have internal predecessors, (8299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:18,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 241.0) internal successors, (19280), 80 states have internal predecessors, (19280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:18,410 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 241.0) internal successors, (19280), 80 states have internal predecessors, (19280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:18,411 INFO L175 Difference]: Start difference. First operand has 346 places, 461 transitions, 7074 flow. Second operand 79 states and 8299 transitions. [2023-09-01 02:27:18,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1109 transitions, 19270 flow [2023-09-01 02:27:19,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 1109 transitions, 15820 flow, removed 1635 selfloop flow, removed 53 redundant places. [2023-09-01 02:27:19,812 INFO L231 Difference]: Finished difference. Result has 348 places, 547 transitions, 8909 flow [2023-09-01 02:27:19,812 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=6283, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=8909, PETRI_PLACES=348, PETRI_TRANSITIONS=547} [2023-09-01 02:27:19,813 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2023-09-01 02:27:19,813 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 547 transitions, 8909 flow [2023-09-01 02:27:19,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 100.125) internal successors, (2403), 24 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:19,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:19,814 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:19,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 02:27:20,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:20,016 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:20,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:20,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1616310805, now seen corresponding path program 8 times [2023-09-01 02:27:20,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:20,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078584689] [2023-09-01 02:27:20,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:20,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:20,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:20,642 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:20,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:20,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078584689] [2023-09-01 02:27:20,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078584689] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:20,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840563825] [2023-09-01 02:27:20,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:27:20,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:20,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:20,649 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:27:20,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 02:27:20,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:27:20,782 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:27:20,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:27:20,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:21,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:21,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:22,389 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:22,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840563825] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:22,389 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:22,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-09-01 02:27:22,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810378444] [2023-09-01 02:27:22,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:22,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:27:22,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:22,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:27:22,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:27:22,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:27:22,524 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 547 transitions, 8909 flow. Second operand has 24 states, 24 states have (on average 97.79166666666667) internal successors, (2347), 24 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:22,524 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:22,524 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:27:22,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:29,182 INFO L130 PetriNetUnfolder]: 6150/10151 cut-off events. [2023-09-01 02:27:29,182 INFO L131 PetriNetUnfolder]: For 229840/229840 co-relation queries the response was YES. [2023-09-01 02:27:29,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70244 conditions, 10151 events. 6150/10151 cut-off events. For 229840/229840 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64306 event pairs, 407 based on Foata normal form. 310/10461 useless extension candidates. Maximal degree in co-relation 70161. Up to 3274 conditions per place. [2023-09-01 02:27:29,283 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 559 selfloop transitions, 292 changer transitions 303/1154 dead transitions. [2023-09-01 02:27:29,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1154 transitions, 18583 flow [2023-09-01 02:27:29,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-09-01 02:27:29,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-09-01 02:27:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 9758 transitions. [2023-09-01 02:27:29,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42176694329183956 [2023-09-01 02:27:29,297 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 9758 transitions. [2023-09-01 02:27:29,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 9758 transitions. [2023-09-01 02:27:29,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:29,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 9758 transitions. [2023-09-01 02:27:29,314 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 101.64583333333333) internal successors, (9758), 96 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:29,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 241.0) internal successors, (23377), 97 states have internal predecessors, (23377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:29,337 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 241.0) internal successors, (23377), 97 states have internal predecessors, (23377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:29,337 INFO L175 Difference]: Start difference. First operand has 348 places, 547 transitions, 8909 flow. Second operand 96 states and 9758 transitions. [2023-09-01 02:27:29,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1154 transitions, 18583 flow [2023-09-01 02:27:30,043 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1154 transitions, 16892 flow, removed 595 selfloop flow, removed 49 redundant places. [2023-09-01 02:27:30,057 INFO L231 Difference]: Finished difference. Result has 412 places, 585 transitions, 9783 flow [2023-09-01 02:27:30,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=9783, PETRI_PLACES=412, PETRI_TRANSITIONS=585} [2023-09-01 02:27:30,058 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2023-09-01 02:27:30,058 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 585 transitions, 9783 flow [2023-09-01 02:27:30,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 97.79166666666667) internal successors, (2347), 24 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:30,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:30,059 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:30,064 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-09-01 02:27:30,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-09-01 02:27:30,265 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:30,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:30,266 INFO L85 PathProgramCache]: Analyzing trace with hash -891136992, now seen corresponding path program 9 times [2023-09-01 02:27:30,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:30,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111810199] [2023-09-01 02:27:30,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:30,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:30,801 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:30,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111810199] [2023-09-01 02:27:30,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111810199] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:30,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402966240] [2023-09-01 02:27:30,802 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:27:30,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:30,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:30,804 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:27:30,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 02:27:30,976 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 02:27:30,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:27:30,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:27:30,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:31,496 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:31,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:32,667 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:32,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402966240] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:32,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:32,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-09-01 02:27:32,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955046260] [2023-09-01 02:27:32,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:32,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 02:27:32,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:32,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 02:27:32,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-09-01 02:27:32,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:27:32,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 585 transitions, 9783 flow. Second operand has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:32,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:32,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:27:32,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:39,416 INFO L130 PetriNetUnfolder]: 6796/11183 cut-off events. [2023-09-01 02:27:39,416 INFO L131 PetriNetUnfolder]: For 512763/512763 co-relation queries the response was YES. [2023-09-01 02:27:39,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90290 conditions, 11183 events. 6796/11183 cut-off events. For 512763/512763 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 71764 event pairs, 567 based on Foata normal form. 196/11379 useless extension candidates. Maximal degree in co-relation 90181. Up to 4568 conditions per place. [2023-09-01 02:27:39,546 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 597 selfloop transitions, 292 changer transitions 229/1118 dead transitions. [2023-09-01 02:27:39,546 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1118 transitions, 20576 flow [2023-09-01 02:27:39,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-09-01 02:27:39,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-09-01 02:27:39,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9034 transitions. [2023-09-01 02:27:39,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118513683621617 [2023-09-01 02:27:39,575 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9034 transitions. [2023-09-01 02:27:39,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9034 transitions. [2023-09-01 02:27:39,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:39,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9034 transitions. [2023-09-01 02:27:39,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 101.50561797752809) internal successors, (9034), 89 states have internal predecessors, (9034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:39,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:39,602 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:39,603 INFO L175 Difference]: Start difference. First operand has 412 places, 585 transitions, 9783 flow. Second operand 89 states and 9034 transitions. [2023-09-01 02:27:39,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1118 transitions, 20576 flow [2023-09-01 02:27:40,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1118 transitions, 16967 flow, removed 1501 selfloop flow, removed 72 redundant places. [2023-09-01 02:27:40,667 INFO L231 Difference]: Finished difference. Result has 423 places, 668 transitions, 11037 flow [2023-09-01 02:27:40,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=8508, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=11037, PETRI_PLACES=423, PETRI_TRANSITIONS=668} [2023-09-01 02:27:40,668 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2023-09-01 02:27:40,668 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 668 transitions, 11037 flow [2023-09-01 02:27:40,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:40,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:40,668 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:40,673 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-09-01 02:27:40,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-09-01 02:27:40,869 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:40,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:40,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1952264199, now seen corresponding path program 10 times [2023-09-01 02:27:40,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:40,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402643082] [2023-09-01 02:27:40,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:40,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:41,992 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:41,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402643082] [2023-09-01 02:27:41,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402643082] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:41,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726318960] [2023-09-01 02:27:41,993 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:27:41,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:41,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:41,994 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:27:41,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 02:27:42,111 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:27:42,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:27:42,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:27:42,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:42,600 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:42,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:44,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:44,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726318960] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:44,218 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:44,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-09-01 02:27:44,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876287843] [2023-09-01 02:27:44,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:44,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 02:27:44,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 02:27:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-09-01 02:27:44,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:27:44,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 668 transitions, 11037 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:44,379 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:44,379 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:27:44,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:27:52,698 INFO L130 PetriNetUnfolder]: 5987/11015 cut-off events. [2023-09-01 02:27:52,698 INFO L131 PetriNetUnfolder]: For 949784/949845 co-relation queries the response was YES. [2023-09-01 02:27:52,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116457 conditions, 11015 events. 5987/11015 cut-off events. For 949784/949845 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 83831 event pairs, 180 based on Foata normal form. 235/11110 useless extension candidates. Maximal degree in co-relation 116347. Up to 2562 conditions per place. [2023-09-01 02:27:52,834 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 581 selfloop transitions, 503 changer transitions 294/1423 dead transitions. [2023-09-01 02:27:52,834 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1423 transitions, 29624 flow [2023-09-01 02:27:52,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-09-01 02:27:52,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-09-01 02:27:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 10120 transitions. [2023-09-01 02:27:52,842 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329041365444668 [2023-09-01 02:27:52,843 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 10120 transitions. [2023-09-01 02:27:52,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 10120 transitions. [2023-09-01 02:27:52,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:27:52,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 10120 transitions. [2023-09-01 02:27:52,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 104.3298969072165) internal successors, (10120), 97 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:52,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:52,872 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:52,872 INFO L175 Difference]: Start difference. First operand has 423 places, 668 transitions, 11037 flow. Second operand 97 states and 10120 transitions. [2023-09-01 02:27:52,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1423 transitions, 29624 flow [2023-09-01 02:27:54,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1423 transitions, 24688 flow, removed 2441 selfloop flow, removed 56 redundant places. [2023-09-01 02:27:54,287 INFO L231 Difference]: Finished difference. Result has 446 places, 846 transitions, 15593 flow [2023-09-01 02:27:54,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=10427, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=15593, PETRI_PLACES=446, PETRI_TRANSITIONS=846} [2023-09-01 02:27:54,289 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2023-09-01 02:27:54,289 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 846 transitions, 15593 flow [2023-09-01 02:27:54,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:54,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:27:54,290 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:27:54,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 02:27:54,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 02:27:54,490 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:27:54,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:27:54,491 INFO L85 PathProgramCache]: Analyzing trace with hash -785454163, now seen corresponding path program 11 times [2023-09-01 02:27:54,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:27:54,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794127718] [2023-09-01 02:27:54,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:27:54,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:27:54,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:27:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:55,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:27:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794127718] [2023-09-01 02:27:55,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794127718] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:27:55,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2033457342] [2023-09-01 02:27:55,235 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:27:55,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:27:55,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:27:55,236 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:27:55,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 02:27:55,341 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-09-01 02:27:55,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:27:55,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:27:55,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:27:55,762 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:55,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:27:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:27:57,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2033457342] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:27:57,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:27:57,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-09-01 02:27:57,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266480791] [2023-09-01 02:27:57,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:27:57,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 02:27:57,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:27:57,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 02:27:57,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-09-01 02:27:57,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:27:57,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 846 transitions, 15593 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:27:57,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:27:57,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:27:57,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:28:04,666 INFO L130 PetriNetUnfolder]: 6489/12057 cut-off events. [2023-09-01 02:28:04,666 INFO L131 PetriNetUnfolder]: For 470956/471037 co-relation queries the response was YES. [2023-09-01 02:28:04,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107437 conditions, 12057 events. 6489/12057 cut-off events. For 470956/471037 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 93300 event pairs, 274 based on Foata normal form. 219/12148 useless extension candidates. Maximal degree in co-relation 107340. Up to 3270 conditions per place. [2023-09-01 02:28:04,911 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 699 selfloop transitions, 424 changer transitions 228/1396 dead transitions. [2023-09-01 02:28:04,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1396 transitions, 27854 flow [2023-09-01 02:28:04,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-09-01 02:28:04,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-09-01 02:28:04,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7515 transitions. [2023-09-01 02:28:04,918 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43309128630705396 [2023-09-01 02:28:04,918 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7515 transitions. [2023-09-01 02:28:04,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7515 transitions. [2023-09-01 02:28:04,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:28:04,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7515 transitions. [2023-09-01 02:28:04,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 104.375) internal successors, (7515), 72 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:04,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:04,938 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:04,938 INFO L175 Difference]: Start difference. First operand has 446 places, 846 transitions, 15593 flow. Second operand 72 states and 7515 transitions. [2023-09-01 02:28:04,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1396 transitions, 27854 flow [2023-09-01 02:28:06,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1396 transitions, 25764 flow, removed 929 selfloop flow, removed 46 redundant places. [2023-09-01 02:28:06,251 INFO L231 Difference]: Finished difference. Result has 461 places, 964 transitions, 17957 flow [2023-09-01 02:28:06,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=14111, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=17957, PETRI_PLACES=461, PETRI_TRANSITIONS=964} [2023-09-01 02:28:06,253 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2023-09-01 02:28:06,253 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 964 transitions, 17957 flow [2023-09-01 02:28:06,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:06,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:28:06,253 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:28:06,258 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 02:28:06,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 02:28:06,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:28:06,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:28:06,454 INFO L85 PathProgramCache]: Analyzing trace with hash 499491438, now seen corresponding path program 12 times [2023-09-01 02:28:06,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:28:06,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457297196] [2023-09-01 02:28:06,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:28:06,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:28:06,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:28:07,339 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:07,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:28:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457297196] [2023-09-01 02:28:07,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457297196] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:28:07,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [278541923] [2023-09-01 02:28:07,340 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:28:07,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:07,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:28:07,345 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:28:07,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 02:28:07,510 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-09-01 02:28:07,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:28:07,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:28:07,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:28:08,096 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:08,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:28:09,709 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:09,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [278541923] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:28:09,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:28:09,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-09-01 02:28:09,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753420211] [2023-09-01 02:28:09,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:28:09,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-09-01 02:28:09,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:28:09,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-09-01 02:28:09,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-09-01 02:28:09,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:28:09,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 964 transitions, 17957 flow. Second operand has 25 states, 25 states have (on average 100.2) internal successors, (2505), 25 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:09,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:28:09,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:28:09,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:28:19,305 INFO L130 PetriNetUnfolder]: 8206/15090 cut-off events. [2023-09-01 02:28:19,305 INFO L131 PetriNetUnfolder]: For 549716/549774 co-relation queries the response was YES. [2023-09-01 02:28:19,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135416 conditions, 15090 events. 8206/15090 cut-off events. For 549716/549774 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 120035 event pairs, 512 based on Foata normal form. 284/15259 useless extension candidates. Maximal degree in co-relation 135323. Up to 3494 conditions per place. [2023-09-01 02:28:19,493 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 789 selfloop transitions, 582 changer transitions 311/1768 dead transitions. [2023-09-01 02:28:19,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1768 transitions, 34493 flow [2023-09-01 02:28:19,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-09-01 02:28:19,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-09-01 02:28:19,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 8422 transitions. [2023-09-01 02:28:19,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43682572614107884 [2023-09-01 02:28:19,500 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 8422 transitions. [2023-09-01 02:28:19,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 8422 transitions. [2023-09-01 02:28:19,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:28:19,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 8422 transitions. [2023-09-01 02:28:19,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 105.275) internal successors, (8422), 80 states have internal predecessors, (8422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:19,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 241.0) internal successors, (19521), 81 states have internal predecessors, (19521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:19,523 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 241.0) internal successors, (19521), 81 states have internal predecessors, (19521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:19,523 INFO L175 Difference]: Start difference. First operand has 461 places, 964 transitions, 17957 flow. Second operand 80 states and 8422 transitions. [2023-09-01 02:28:19,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1768 transitions, 34493 flow [2023-09-01 02:28:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1768 transitions, 32427 flow, removed 946 selfloop flow, removed 32 redundant places. [2023-09-01 02:28:21,589 INFO L231 Difference]: Finished difference. Result has 506 places, 1184 transitions, 23709 flow [2023-09-01 02:28:21,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=16997, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=23709, PETRI_PLACES=506, PETRI_TRANSITIONS=1184} [2023-09-01 02:28:21,590 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 463 predicate places. [2023-09-01 02:28:21,590 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 1184 transitions, 23709 flow [2023-09-01 02:28:21,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.2) internal successors, (2505), 25 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:21,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:28:21,591 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:28:21,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-09-01 02:28:21,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:21,796 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:28:21,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:28:21,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1785397735, now seen corresponding path program 13 times [2023-09-01 02:28:21,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:28:21,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134074570] [2023-09-01 02:28:21,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:28:21,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:28:21,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:28:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:22,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:28:22,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134074570] [2023-09-01 02:28:22,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134074570] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:28:22,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229813040] [2023-09-01 02:28:22,421 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:28:22,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:22,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:28:22,425 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:28:22,429 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 02:28:22,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:28:22,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:28:22,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:28:23,136 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:23,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:28:24,951 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:24,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229813040] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:28:24,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:28:24,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-09-01 02:28:24,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116974244] [2023-09-01 02:28:24,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:28:24,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 02:28:24,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:28:24,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 02:28:24,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-09-01 02:28:25,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:28:25,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1184 transitions, 23709 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:25,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:28:25,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:28:25,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:28:34,580 INFO L130 PetriNetUnfolder]: 8640/16038 cut-off events. [2023-09-01 02:28:34,580 INFO L131 PetriNetUnfolder]: For 700664/700725 co-relation queries the response was YES. [2023-09-01 02:28:34,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148693 conditions, 16038 events. 8640/16038 cut-off events. For 700664/700725 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 129739 event pairs, 704 based on Foata normal form. 169/16085 useless extension candidates. Maximal degree in co-relation 148592. Up to 4583 conditions per place. [2023-09-01 02:28:34,823 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 958 selfloop transitions, 533 changer transitions 196/1773 dead transitions. [2023-09-01 02:28:34,823 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1773 transitions, 36167 flow [2023-09-01 02:28:34,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-09-01 02:28:34,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-09-01 02:28:34,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7578 transitions. [2023-09-01 02:28:34,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367219917012448 [2023-09-01 02:28:34,829 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7578 transitions. [2023-09-01 02:28:34,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7578 transitions. [2023-09-01 02:28:34,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:28:34,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7578 transitions. [2023-09-01 02:28:34,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.25) internal successors, (7578), 72 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:34,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:34,853 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:34,853 INFO L175 Difference]: Start difference. First operand has 506 places, 1184 transitions, 23709 flow. Second operand 72 states and 7578 transitions. [2023-09-01 02:28:34,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 1773 transitions, 36167 flow [2023-09-01 02:28:37,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1773 transitions, 34528 flow, removed 767 selfloop flow, removed 27 redundant places. [2023-09-01 02:28:37,146 INFO L231 Difference]: Finished difference. Result has 553 places, 1327 transitions, 27485 flow [2023-09-01 02:28:37,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=22530, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=27485, PETRI_PLACES=553, PETRI_TRANSITIONS=1327} [2023-09-01 02:28:37,147 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 510 predicate places. [2023-09-01 02:28:37,148 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1327 transitions, 27485 flow [2023-09-01 02:28:37,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:37,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:28:37,149 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:28:37,153 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 02:28:37,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 02:28:37,350 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:28:37,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:28:37,351 INFO L85 PathProgramCache]: Analyzing trace with hash -2086970624, now seen corresponding path program 4 times [2023-09-01 02:28:37,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:28:37,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646077848] [2023-09-01 02:28:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:28:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:28:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:28:38,644 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:38,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:28:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646077848] [2023-09-01 02:28:38,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646077848] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:28:38,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [326680867] [2023-09-01 02:28:38,645 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:28:38,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:38,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:28:38,649 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:28:38,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 02:28:38,784 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:28:38,784 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:28:38,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:28:38,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:28:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:39,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:28:40,626 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:40,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [326680867] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:28:40,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:28:40,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:28:40,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078822165] [2023-09-01 02:28:40,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:28:40,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:28:40,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:28:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:28:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:28:40,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 241 [2023-09-01 02:28:40,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1327 transitions, 27485 flow. Second operand has 30 states, 30 states have (on average 101.7) internal successors, (3051), 30 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:40,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:28:40,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 241 [2023-09-01 02:28:40,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:28:51,471 INFO L130 PetriNetUnfolder]: 9781/18333 cut-off events. [2023-09-01 02:28:51,471 INFO L131 PetriNetUnfolder]: For 991958/992111 co-relation queries the response was YES. [2023-09-01 02:28:51,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177148 conditions, 18333 events. 9781/18333 cut-off events. For 991958/992111 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 152554 event pairs, 790 based on Foata normal form. 293/18506 useless extension candidates. Maximal degree in co-relation 177035. Up to 5546 conditions per place. [2023-09-01 02:28:51,760 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1108 selfloop transitions, 526 changer transitions 379/2099 dead transitions. [2023-09-01 02:28:51,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 2099 transitions, 43730 flow [2023-09-01 02:28:51,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-09-01 02:28:51,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-09-01 02:28:51,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 10385 transitions. [2023-09-01 02:28:51,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44424006502117463 [2023-09-01 02:28:51,766 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 10385 transitions. [2023-09-01 02:28:51,766 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 10385 transitions. [2023-09-01 02:28:51,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:28:51,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 10385 transitions. [2023-09-01 02:28:51,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 107.0618556701031) internal successors, (10385), 97 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:51,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:51,792 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:51,792 INFO L175 Difference]: Start difference. First operand has 553 places, 1327 transitions, 27485 flow. Second operand 97 states and 10385 transitions. [2023-09-01 02:28:51,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 2099 transitions, 43730 flow [2023-09-01 02:28:55,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 2099 transitions, 42707 flow, removed 468 selfloop flow, removed 32 redundant places. [2023-09-01 02:28:55,303 INFO L231 Difference]: Finished difference. Result has 632 places, 1459 transitions, 31220 flow [2023-09-01 02:28:55,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=26685, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=31220, PETRI_PLACES=632, PETRI_TRANSITIONS=1459} [2023-09-01 02:28:55,305 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 589 predicate places. [2023-09-01 02:28:55,305 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 1459 transitions, 31220 flow [2023-09-01 02:28:55,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 101.7) internal successors, (3051), 30 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:55,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:28:55,305 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:28:55,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-09-01 02:28:55,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:55,506 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:28:55,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:28:55,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1395350143, now seen corresponding path program 14 times [2023-09-01 02:28:55,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:28:55,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081809646] [2023-09-01 02:28:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:28:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:28:55,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:28:56,281 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:56,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:28:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081809646] [2023-09-01 02:28:56,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1081809646] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:28:56,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767891095] [2023-09-01 02:28:56,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:28:56,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:28:56,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:28:56,283 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:28:56,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 02:28:56,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:28:56,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:28:56,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:28:56,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:28:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:57,135 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:28:58,877 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:28:58,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767891095] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:28:58,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:28:58,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 02:28:58,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760729746] [2023-09-01 02:28:58,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:28:58,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 02:28:58,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:28:58,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 02:28:58,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2023-09-01 02:28:59,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:28:59,101 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 1459 transitions, 31220 flow. Second operand has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:28:59,101 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:28:59,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:28:59,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:29:13,716 INFO L130 PetriNetUnfolder]: 15066/25285 cut-off events. [2023-09-01 02:29:13,717 INFO L131 PetriNetUnfolder]: For 1223981/1223981 co-relation queries the response was YES. [2023-09-01 02:29:14,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227887 conditions, 25285 events. 15066/25285 cut-off events. For 1223981/1223981 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 188747 event pairs, 1645 based on Foata normal form. 296/25581 useless extension candidates. Maximal degree in co-relation 227757. Up to 9808 conditions per place. [2023-09-01 02:29:14,636 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1286 selfloop transitions, 648 changer transitions 244/2178 dead transitions. [2023-09-01 02:29:14,636 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 2178 transitions, 49238 flow [2023-09-01 02:29:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-09-01 02:29:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-09-01 02:29:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9103 transitions. [2023-09-01 02:29:14,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42440207002657465 [2023-09-01 02:29:14,642 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9103 transitions. [2023-09-01 02:29:14,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9103 transitions. [2023-09-01 02:29:14,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:29:14,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9103 transitions. [2023-09-01 02:29:14,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 102.28089887640449) internal successors, (9103), 89 states have internal predecessors, (9103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:14,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:14,661 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:14,661 INFO L175 Difference]: Start difference. First operand has 632 places, 1459 transitions, 31220 flow. Second operand 89 states and 9103 transitions. [2023-09-01 02:29:14,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 2178 transitions, 49238 flow [2023-09-01 02:29:19,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 2178 transitions, 45813 flow, removed 1674 selfloop flow, removed 43 redundant places. [2023-09-01 02:29:19,285 INFO L231 Difference]: Finished difference. Result has 675 places, 1613 transitions, 35450 flow [2023-09-01 02:29:19,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=35450, PETRI_PLACES=675, PETRI_TRANSITIONS=1613} [2023-09-01 02:29:19,287 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 632 predicate places. [2023-09-01 02:29:19,287 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 1613 transitions, 35450 flow [2023-09-01 02:29:19,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:19,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:29:19,288 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:29:19,297 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 02:29:19,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:29:19,494 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:29:19,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:29:19,495 INFO L85 PathProgramCache]: Analyzing trace with hash -2122732753, now seen corresponding path program 15 times [2023-09-01 02:29:19,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:29:19,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201579172] [2023-09-01 02:29:19,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:29:19,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:29:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:29:20,177 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:29:20,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:29:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201579172] [2023-09-01 02:29:20,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201579172] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:29:20,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161600882] [2023-09-01 02:29:20,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:29:20,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:29:20,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:29:20,181 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:29:20,219 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 02:29:20,379 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-09-01 02:29:20,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:29:20,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:29:20,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:29:21,068 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:29:21,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:29:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:29:23,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161600882] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:29:23,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:29:23,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:29:23,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496827426] [2023-09-01 02:29:23,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:29:23,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:29:23,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:29:23,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:29:23,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:29:23,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:29:23,690 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 1613 transitions, 35450 flow. Second operand has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:23,690 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:29:23,690 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:29:23,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:29:50,070 INFO L130 PetriNetUnfolder]: 17195/28806 cut-off events. [2023-09-01 02:29:50,070 INFO L131 PetriNetUnfolder]: For 1992663/1992663 co-relation queries the response was YES. [2023-09-01 02:29:50,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286749 conditions, 28806 events. 17195/28806 cut-off events. For 1992663/1992663 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 219130 event pairs, 1389 based on Foata normal form. 648/29454 useless extension candidates. Maximal degree in co-relation 286609. Up to 9756 conditions per place. [2023-09-01 02:29:51,049 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1361 selfloop transitions, 744 changer transitions 628/2733 dead transitions. [2023-09-01 02:29:51,049 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 2733 transitions, 64211 flow [2023-09-01 02:29:51,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-09-01 02:29:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2023-09-01 02:29:51,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 16706 transitions. [2023-09-01 02:29:51,059 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42011819439205333 [2023-09-01 02:29:51,059 INFO L72 ComplementDD]: Start complementDD. Operand 165 states and 16706 transitions. [2023-09-01 02:29:51,059 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 16706 transitions. [2023-09-01 02:29:51,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:29:51,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 165 states and 16706 transitions. [2023-09-01 02:29:51,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 166 states, 165 states have (on average 101.24848484848485) internal successors, (16706), 165 states have internal predecessors, (16706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:51,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 166 states, 166 states have (on average 241.0) internal successors, (40006), 166 states have internal predecessors, (40006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:51,096 INFO L81 ComplementDD]: Finished complementDD. Result has 166 states, 166 states have (on average 241.0) internal successors, (40006), 166 states have internal predecessors, (40006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:51,097 INFO L175 Difference]: Start difference. First operand has 675 places, 1613 transitions, 35450 flow. Second operand 165 states and 16706 transitions. [2023-09-01 02:29:51,097 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 2733 transitions, 64211 flow [2023-09-01 02:29:58,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 2733 transitions, 60441 flow, removed 1745 selfloop flow, removed 54 redundant places. [2023-09-01 02:29:58,902 INFO L231 Difference]: Finished difference. Result has 858 places, 1747 transitions, 40221 flow [2023-09-01 02:29:58,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=33514, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_STATES=165, PETRI_FLOW=40221, PETRI_PLACES=858, PETRI_TRANSITIONS=1747} [2023-09-01 02:29:58,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 815 predicate places. [2023-09-01 02:29:58,904 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1747 transitions, 40221 flow [2023-09-01 02:29:58,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:29:58,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:29:58,904 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:29:58,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-09-01 02:29:59,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:29:59,105 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:29:59,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:29:59,106 INFO L85 PathProgramCache]: Analyzing trace with hash 420308987, now seen corresponding path program 16 times [2023-09-01 02:29:59,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:29:59,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641576387] [2023-09-01 02:29:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:29:59,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:29:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:29:59,976 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:29:59,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:29:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641576387] [2023-09-01 02:29:59,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641576387] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:29:59,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092282636] [2023-09-01 02:29:59,977 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:29:59,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:29:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:29:59,978 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:29:59,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 02:30:00,094 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:30:00,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:30:00,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:30:00,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:30:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:00,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:30:02,507 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:02,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092282636] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:30:02,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:30:02,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 02:30:02,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645280619] [2023-09-01 02:30:02,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:30:02,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 02:30:02,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:30:02,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 02:30:02,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2023-09-01 02:30:02,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:30:02,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1747 transitions, 40221 flow. Second operand has 31 states, 31 states have (on average 100.45161290322581) internal successors, (3114), 31 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:02,701 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:30:02,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:30:02,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:30:20,850 INFO L130 PetriNetUnfolder]: 12138/22516 cut-off events. [2023-09-01 02:30:20,850 INFO L131 PetriNetUnfolder]: For 5885453/5885584 co-relation queries the response was YES. [2023-09-01 02:30:22,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351012 conditions, 22516 events. 12138/22516 cut-off events. For 5885453/5885584 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 191028 event pairs, 568 based on Foata normal form. 326/22552 useless extension candidates. Maximal degree in co-relation 350798. Up to 6018 conditions per place. [2023-09-01 02:30:22,321 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1189 selfloop transitions, 773 changer transitions 309/2384 dead transitions. [2023-09-01 02:30:22,321 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 2384 transitions, 62408 flow [2023-09-01 02:30:22,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-09-01 02:30:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-09-01 02:30:22,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 9174 transitions. [2023-09-01 02:30:22,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43257261410788383 [2023-09-01 02:30:22,331 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 9174 transitions. [2023-09-01 02:30:22,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 9174 transitions. [2023-09-01 02:30:22,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:30:22,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 9174 transitions. [2023-09-01 02:30:22,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 104.25) internal successors, (9174), 88 states have internal predecessors, (9174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:22,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 241.0) internal successors, (21449), 89 states have internal predecessors, (21449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:22,353 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 241.0) internal successors, (21449), 89 states have internal predecessors, (21449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:22,354 INFO L175 Difference]: Start difference. First operand has 858 places, 1747 transitions, 40221 flow. Second operand 88 states and 9174 transitions. [2023-09-01 02:30:22,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 2384 transitions, 62408 flow [2023-09-01 02:30:43,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 2384 transitions, 56445 flow, removed 2858 selfloop flow, removed 100 redundant places. [2023-09-01 02:30:43,629 INFO L231 Difference]: Finished difference. Result has 774 places, 1841 transitions, 43587 flow [2023-09-01 02:30:43,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=38128, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=634, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1061, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=43587, PETRI_PLACES=774, PETRI_TRANSITIONS=1841} [2023-09-01 02:30:43,631 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 731 predicate places. [2023-09-01 02:30:43,631 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 1841 transitions, 43587 flow [2023-09-01 02:30:43,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 100.45161290322581) internal successors, (3114), 31 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:43,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:30:43,631 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:30:43,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 02:30:43,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:30:43,832 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:30:43,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:30:43,833 INFO L85 PathProgramCache]: Analyzing trace with hash 878627292, now seen corresponding path program 17 times [2023-09-01 02:30:43,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:30:43,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209535850] [2023-09-01 02:30:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:30:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:30:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:30:44,548 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:44,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:30:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209535850] [2023-09-01 02:30:44,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209535850] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:30:44,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178379659] [2023-09-01 02:30:44,549 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:30:44,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:30:44,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:30:44,550 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:30:44,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 02:30:44,669 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-09-01 02:30:44,669 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:30:44,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:30:44,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:30:45,363 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:45,364 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:30:47,651 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:47,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178379659] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:30:47,653 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:30:47,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:30:47,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228406842] [2023-09-01 02:30:47,653 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:30:47,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:30:47,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:30:47,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:30:47,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:30:47,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:30:47,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 1841 transitions, 43587 flow. Second operand has 30 states, 30 states have (on average 100.1) internal successors, (3003), 30 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:30:47,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:30:47,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:30:47,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:31:09,661 INFO L130 PetriNetUnfolder]: 14163/26307 cut-off events. [2023-09-01 02:31:09,661 INFO L131 PetriNetUnfolder]: For 2623241/2623502 co-relation queries the response was YES. [2023-09-01 02:31:10,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324247 conditions, 26307 events. 14163/26307 cut-off events. For 2623241/2623502 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 228911 event pairs, 802 based on Foata normal form. 549/26642 useless extension candidates. Maximal degree in co-relation 324078. Up to 6659 conditions per place. [2023-09-01 02:31:10,790 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1382 selfloop transitions, 875 changer transitions 581/2963 dead transitions. [2023-09-01 02:31:10,790 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 2963 transitions, 75979 flow [2023-09-01 02:31:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-09-01 02:31:10,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-09-01 02:31:10,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 13252 transitions. [2023-09-01 02:31:10,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364091418033327 [2023-09-01 02:31:10,798 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 13252 transitions. [2023-09-01 02:31:10,798 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 13252 transitions. [2023-09-01 02:31:10,799 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:31:10,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 13252 transitions. [2023-09-01 02:31:10,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 105.17460317460318) internal successors, (13252), 126 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:10,823 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:10,825 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:10,826 INFO L175 Difference]: Start difference. First operand has 774 places, 1841 transitions, 43587 flow. Second operand 126 states and 13252 transitions. [2023-09-01 02:31:10,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 2963 transitions, 75979 flow [2023-09-01 02:31:20,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 804 places, 2963 transitions, 71926 flow, removed 1977 selfloop flow, removed 51 redundant places. [2023-09-01 02:31:20,197 INFO L231 Difference]: Finished difference. Result has 850 places, 1999 transitions, 50251 flow [2023-09-01 02:31:20,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=42598, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=50251, PETRI_PLACES=850, PETRI_TRANSITIONS=1999} [2023-09-01 02:31:20,199 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 807 predicate places. [2023-09-01 02:31:20,200 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1999 transitions, 50251 flow [2023-09-01 02:31:20,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.1) internal successors, (3003), 30 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:20,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:31:20,200 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:31:20,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 02:31:20,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-09-01 02:31:20,407 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:31:20,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:31:20,407 INFO L85 PathProgramCache]: Analyzing trace with hash 1222393217, now seen corresponding path program 18 times [2023-09-01 02:31:20,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:31:20,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181380036] [2023-09-01 02:31:20,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:31:20,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:31:20,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:31:21,191 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:31:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:31:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181380036] [2023-09-01 02:31:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181380036] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:31:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372619440] [2023-09-01 02:31:21,192 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:31:21,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:31:21,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:31:21,193 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:31:21,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 02:31:21,346 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-09-01 02:31:21,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:31:21,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:31:21,350 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:31:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:31:21,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:31:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:31:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372619440] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:31:23,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:31:23,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 02:31:23,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108247449] [2023-09-01 02:31:23,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:31:23,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 02:31:23,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:31:23,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 02:31:23,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2023-09-01 02:31:23,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:31:23,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1999 transitions, 50251 flow. Second operand has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:23,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:31:23,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:31:23,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:31:49,803 INFO L130 PetriNetUnfolder]: 20195/33570 cut-off events. [2023-09-01 02:31:49,803 INFO L131 PetriNetUnfolder]: For 2781190/2781190 co-relation queries the response was YES. [2023-09-01 02:31:51,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350406 conditions, 33570 events. 20195/33570 cut-off events. For 2781190/2781190 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 257527 event pairs, 2065 based on Foata normal form. 506/34076 useless extension candidates. Maximal degree in co-relation 350219. Up to 14762 conditions per place. [2023-09-01 02:31:51,529 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1628 selfloop transitions, 679 changer transitions 447/2754 dead transitions. [2023-09-01 02:31:51,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 2754 transitions, 71835 flow [2023-09-01 02:31:51,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-09-01 02:31:51,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2023-09-01 02:31:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 11852 transitions. [2023-09-01 02:31:51,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42032840373089336 [2023-09-01 02:31:51,536 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 11852 transitions. [2023-09-01 02:31:51,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 11852 transitions. [2023-09-01 02:31:51,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:31:51,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 11852 transitions. [2023-09-01 02:31:51,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 101.2991452991453) internal successors, (11852), 117 states have internal predecessors, (11852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:51,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 241.0) internal successors, (28438), 118 states have internal predecessors, (28438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:51,559 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 241.0) internal successors, (28438), 118 states have internal predecessors, (28438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:31:51,559 INFO L175 Difference]: Start difference. First operand has 850 places, 1999 transitions, 50251 flow. Second operand 117 states and 11852 transitions. [2023-09-01 02:31:51,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 2754 transitions, 71835 flow [2023-09-01 02:32:05,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 857 places, 2754 transitions, 66303 flow, removed 1848 selfloop flow, removed 60 redundant places. [2023-09-01 02:32:05,981 INFO L231 Difference]: Finished difference. Result has 925 places, 2033 transitions, 49514 flow [2023-09-01 02:32:05,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=45832, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=49514, PETRI_PLACES=925, PETRI_TRANSITIONS=2033} [2023-09-01 02:32:05,985 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 882 predicate places. [2023-09-01 02:32:05,985 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 2033 transitions, 49514 flow [2023-09-01 02:32:05,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:05,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:05,986 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:05,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-09-01 02:32:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-09-01 02:32:06,191 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:32:06,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:06,192 INFO L85 PathProgramCache]: Analyzing trace with hash -335942442, now seen corresponding path program 19 times [2023-09-01 02:32:06,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:06,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447139483] [2023-09-01 02:32:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:06,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:06,690 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:06,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447139483] [2023-09-01 02:32:06,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447139483] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:32:06,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833521274] [2023-09-01 02:32:06,690 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:32:06,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:32:06,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:32:06,692 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:32:06,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 02:32:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:06,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:32:06,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:32:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:07,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:32:09,574 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:09,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833521274] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:32:09,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:32:09,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:32:09,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442244966] [2023-09-01 02:32:09,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:32:09,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:32:09,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:09,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:32:09,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:32:09,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:32:09,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 2033 transitions, 49514 flow. Second operand has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:09,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:09,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:32:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:35,499 INFO L130 PetriNetUnfolder]: 14745/27185 cut-off events. [2023-09-01 02:32:35,499 INFO L131 PetriNetUnfolder]: For 6123979/6124120 co-relation queries the response was YES. [2023-09-01 02:32:36,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408533 conditions, 27185 events. 14745/27185 cut-off events. For 6123979/6124120 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 236627 event pairs, 868 based on Foata normal form. 437/27296 useless extension candidates. Maximal degree in co-relation 408312. Up to 8182 conditions per place. [2023-09-01 02:32:37,005 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1535 selfloop transitions, 772 changer transitions 464/2910 dead transitions. [2023-09-01 02:32:37,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 2910 transitions, 82555 flow [2023-09-01 02:32:37,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-09-01 02:32:37,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2023-09-01 02:32:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 11773 transitions. [2023-09-01 02:32:37,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323063929791062 [2023-09-01 02:32:37,016 INFO L72 ComplementDD]: Start complementDD. Operand 113 states and 11773 transitions. [2023-09-01 02:32:37,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 11773 transitions. [2023-09-01 02:32:37,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:37,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 113 states and 11773 transitions. [2023-09-01 02:32:37,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 114 states, 113 states have (on average 104.1858407079646) internal successors, (11773), 113 states have internal predecessors, (11773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:37,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 114 states, 114 states have (on average 241.0) internal successors, (27474), 114 states have internal predecessors, (27474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:37,045 INFO L81 ComplementDD]: Finished complementDD. Result has 114 states, 114 states have (on average 241.0) internal successors, (27474), 114 states have internal predecessors, (27474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:37,046 INFO L175 Difference]: Start difference. First operand has 925 places, 2033 transitions, 49514 flow. Second operand 113 states and 11773 transitions. [2023-09-01 02:32:37,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 2910 transitions, 82555 flow [2023-09-01 02:33:01,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 2910 transitions, 76283 flow, removed 3045 selfloop flow, removed 85 redundant places. [2023-09-01 02:33:01,580 INFO L231 Difference]: Finished difference. Result has 929 places, 2167 transitions, 55237 flow [2023-09-01 02:33:01,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=48042, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=55237, PETRI_PLACES=929, PETRI_TRANSITIONS=2167} [2023-09-01 02:33:01,582 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 886 predicate places. [2023-09-01 02:33:01,582 INFO L495 AbstractCegarLoop]: Abstraction has has 929 places, 2167 transitions, 55237 flow [2023-09-01 02:33:01,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:01,583 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:01,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-09-01 02:33:01,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:33:01,788 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:33:01,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:01,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1956957301, now seen corresponding path program 20 times [2023-09-01 02:33:01,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:01,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936467513] [2023-09-01 02:33:01,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:01,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:01,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:02,702 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936467513] [2023-09-01 02:33:02,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936467513] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:33:02,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698060592] [2023-09-01 02:33:02,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:33:02,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:33:02,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:33:02,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:33:02,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 02:33:02,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:33:02,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:33:02,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:33:02,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:33:03,530 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:03,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:33:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:33:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698060592] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:33:05,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:33:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:33:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260425601] [2023-09-01 02:33:05,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:33:05,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:33:05,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:05,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:33:05,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:33:06,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:33:06,073 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 2167 transitions, 55237 flow. Second operand has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,073 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:06,073 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:33:06,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:41,943 INFO L130 PetriNetUnfolder]: 23126/38311 cut-off events. [2023-09-01 02:33:41,943 INFO L131 PetriNetUnfolder]: For 3430093/3430093 co-relation queries the response was YES. [2023-09-01 02:33:43,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412769 conditions, 38311 events. 23126/38311 cut-off events. For 3430093/3430093 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 300338 event pairs, 3287 based on Foata normal form. 440/38751 useless extension candidates. Maximal degree in co-relation 412563. Up to 18706 conditions per place. [2023-09-01 02:33:43,855 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1865 selfloop transitions, 709 changer transitions 454/3028 dead transitions. [2023-09-01 02:33:43,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 3028 transitions, 83226 flow [2023-09-01 02:33:43,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-09-01 02:33:43,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-09-01 02:33:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 12765 transitions. [2023-09-01 02:33:43,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203714680893104 [2023-09-01 02:33:43,862 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 12765 transitions. [2023-09-01 02:33:43,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 12765 transitions. [2023-09-01 02:33:43,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:43,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 12765 transitions. [2023-09-01 02:33:43,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 101.30952380952381) internal successors, (12765), 126 states have internal predecessors, (12765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:43,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:43,887 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:43,887 INFO L175 Difference]: Start difference. First operand has 929 places, 2167 transitions, 55237 flow. Second operand 126 states and 12765 transitions. [2023-09-01 02:33:43,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 3028 transitions, 83226 flow [2023-09-01 02:34:09,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 3028 transitions, 79404 flow, removed 1838 selfloop flow, removed 58 redundant places. [2023-09-01 02:34:09,198 INFO L231 Difference]: Finished difference. Result has 1031 places, 2294 transitions, 60146 flow [2023-09-01 02:34:09,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=53055, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=60146, PETRI_PLACES=1031, PETRI_TRANSITIONS=2294} [2023-09-01 02:34:09,201 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 988 predicate places. [2023-09-01 02:34:09,201 INFO L495 AbstractCegarLoop]: Abstraction has has 1031 places, 2294 transitions, 60146 flow [2023-09-01 02:34:09,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:09,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:34:09,201 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:34:09,207 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-09-01 02:34:09,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:34:09,408 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:34:09,408 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:34:09,408 INFO L85 PathProgramCache]: Analyzing trace with hash 2106651456, now seen corresponding path program 21 times [2023-09-01 02:34:09,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:34:09,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609630257] [2023-09-01 02:34:09,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:34:09,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:34:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:34:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:10,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:34:10,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609630257] [2023-09-01 02:34:10,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609630257] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:34:10,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169902337] [2023-09-01 02:34:10,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:34:10,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:34:10,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:34:10,112 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:34:10,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-09-01 02:34:10,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 02:34:10,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:34:10,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:34:10,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:34:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:11,129 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:34:13,471 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:34:13,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169902337] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:34:13,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:34:13,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:34:13,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421041537] [2023-09-01 02:34:13,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:34:13,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:34:13,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:34:13,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:34:13,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:34:13,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:34:13,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 2294 transitions, 60146 flow. Second operand has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:13,632 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:34:13,632 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:34:13,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:34:43,898 INFO L130 PetriNetUnfolder]: 16912/31148 cut-off events. [2023-09-01 02:34:43,899 INFO L131 PetriNetUnfolder]: For 8225439/8225584 co-relation queries the response was YES. [2023-09-01 02:34:45,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508640 conditions, 31148 events. 16912/31148 cut-off events. For 8225439/8225584 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 277403 event pairs, 928 based on Foata normal form. 446/31218 useless extension candidates. Maximal degree in co-relation 508392. Up to 9805 conditions per place. [2023-09-01 02:34:45,730 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1707 selfloop transitions, 927 changer transitions 453/3222 dead transitions. [2023-09-01 02:34:45,730 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1058 places, 3222 transitions, 99295 flow [2023-09-01 02:34:45,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-09-01 02:34:45,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-09-01 02:34:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 10631 transitions. [2023-09-01 02:34:45,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432470913676674 [2023-09-01 02:34:45,737 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 10631 transitions. [2023-09-01 02:34:45,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 10631 transitions. [2023-09-01 02:34:45,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:34:45,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 10631 transitions. [2023-09-01 02:34:45,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 104.22549019607843) internal successors, (10631), 102 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:45,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 241.0) internal successors, (24823), 103 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:45,884 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 241.0) internal successors, (24823), 103 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:34:45,885 INFO L175 Difference]: Start difference. First operand has 1031 places, 2294 transitions, 60146 flow. Second operand 102 states and 10631 transitions. [2023-09-01 02:34:45,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1058 places, 3222 transitions, 99295 flow [2023-09-01 02:35:17,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 978 places, 3222 transitions, 92449 flow, removed 3378 selfloop flow, removed 80 redundant places. [2023-09-01 02:35:17,857 INFO L231 Difference]: Finished difference. Result has 1024 places, 2513 transitions, 69629 flow [2023-09-01 02:35:17,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=58374, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=69629, PETRI_PLACES=1024, PETRI_TRANSITIONS=2513} [2023-09-01 02:35:17,859 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 981 predicate places. [2023-09-01 02:35:17,859 INFO L495 AbstractCegarLoop]: Abstraction has has 1024 places, 2513 transitions, 69629 flow [2023-09-01 02:35:17,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:17,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:35:17,860 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:35:17,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-09-01 02:35:18,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-09-01 02:35:18,061 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:35:18,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:35:18,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1202561805, now seen corresponding path program 22 times [2023-09-01 02:35:18,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:35:18,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776080524] [2023-09-01 02:35:18,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:35:18,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:35:18,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:35:18,631 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:18,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:35:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776080524] [2023-09-01 02:35:18,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776080524] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:35:18,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2134460770] [2023-09-01 02:35:18,632 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:35:18,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:35:18,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:35:18,637 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:35:18,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-09-01 02:35:18,799 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:35:18,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:35:18,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:35:18,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:35:19,465 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:19,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:35:22,035 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:35:22,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2134460770] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:35:22,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:35:22,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:35:22,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459045016] [2023-09-01 02:35:22,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:35:22,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:35:22,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:35:22,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:35:22,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:35:22,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:35:22,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1024 places, 2513 transitions, 69629 flow. Second operand has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:22,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:35:22,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:35:22,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:35:55,195 INFO L130 PetriNetUnfolder]: 17990/33078 cut-off events. [2023-09-01 02:35:55,195 INFO L131 PetriNetUnfolder]: For 5059024/5059161 co-relation queries the response was YES. [2023-09-01 02:35:57,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467357 conditions, 33078 events. 17990/33078 cut-off events. For 5059024/5059161 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 296590 event pairs, 984 based on Foata normal form. 429/33111 useless extension candidates. Maximal degree in co-relation 467124. Up to 10841 conditions per place. [2023-09-01 02:35:57,661 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1894 selfloop transitions, 949 changer transitions 427/3403 dead transitions. [2023-09-01 02:35:57,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1078 places, 3403 transitions, 104166 flow [2023-09-01 02:35:57,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-09-01 02:35:57,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-09-01 02:35:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 10528 transitions. [2023-09-01 02:35:57,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43252126042479766 [2023-09-01 02:35:57,669 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 10528 transitions. [2023-09-01 02:35:57,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 10528 transitions. [2023-09-01 02:35:57,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:35:57,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 10528 transitions. [2023-09-01 02:35:57,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 104.23762376237623) internal successors, (10528), 101 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:57,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 241.0) internal successors, (24582), 102 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:57,693 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 241.0) internal successors, (24582), 102 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:35:57,693 INFO L175 Difference]: Start difference. First operand has 1024 places, 2513 transitions, 69629 flow. Second operand 101 states and 10528 transitions. [2023-09-01 02:35:57,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1078 places, 3403 transitions, 104166 flow [2023-09-01 02:36:22,194 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 3403 transitions, 99588 flow, removed 2225 selfloop flow, removed 50 redundant places. [2023-09-01 02:36:22,256 INFO L231 Difference]: Finished difference. Result has 1063 places, 2701 transitions, 78021 flow [2023-09-01 02:36:22,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=67356, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=78021, PETRI_PLACES=1063, PETRI_TRANSITIONS=2701} [2023-09-01 02:36:22,259 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1020 predicate places. [2023-09-01 02:36:22,259 INFO L495 AbstractCegarLoop]: Abstraction has has 1063 places, 2701 transitions, 78021 flow [2023-09-01 02:36:22,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:22,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:36:22,260 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:36:22,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-09-01 02:36:22,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-09-01 02:36:22,461 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:36:22,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:36:22,461 INFO L85 PathProgramCache]: Analyzing trace with hash -585625454, now seen corresponding path program 23 times [2023-09-01 02:36:22,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:36:22,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816584517] [2023-09-01 02:36:22,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:36:22,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:36:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:36:23,094 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:23,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:36:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816584517] [2023-09-01 02:36:23,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816584517] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:36:23,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374572762] [2023-09-01 02:36:23,095 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:36:23,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:36:23,095 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:36:23,097 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:36:23,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-09-01 02:36:23,284 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-09-01 02:36:23,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:36:23,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:36:23,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:36:23,859 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:23,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:36:25,456 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:36:25,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374572762] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:36:25,456 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:36:25,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-09-01 02:36:25,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174841140] [2023-09-01 02:36:25,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:36:25,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:36:25,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:36:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:36:25,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:36:25,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-09-01 02:36:25,644 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 2701 transitions, 78021 flow. Second operand has 30 states, 30 states have (on average 100.26666666666667) internal successors, (3008), 30 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:36:25,644 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:36:25,644 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-09-01 02:36:25,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:36:59,520 INFO L130 PetriNetUnfolder]: 18655/34485 cut-off events. [2023-09-01 02:36:59,520 INFO L131 PetriNetUnfolder]: For 4514052/4514257 co-relation queries the response was YES. [2023-09-01 02:37:01,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478544 conditions, 34485 events. 18655/34485 cut-off events. For 4514052/4514257 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 312544 event pairs, 1640 based on Foata normal form. 299/34514 useless extension candidates. Maximal degree in co-relation 478312. Up to 12530 conditions per place. [2023-09-01 02:37:01,816 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 2017 selfloop transitions, 828 changer transitions 409/3465 dead transitions. [2023-09-01 02:37:01,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 3465 transitions, 106491 flow [2023-09-01 02:37:01,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-09-01 02:37:01,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-09-01 02:37:01,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 9565 transitions. [2023-09-01 02:37:01,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43614062286261457 [2023-09-01 02:37:01,822 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 9565 transitions. [2023-09-01 02:37:01,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 9565 transitions. [2023-09-01 02:37:01,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:37:01,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 9565 transitions. [2023-09-01 02:37:01,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 105.10989010989012) internal successors, (9565), 91 states have internal predecessors, (9565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:01,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 241.0) internal successors, (22172), 92 states have internal predecessors, (22172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:01,842 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 241.0) internal successors, (22172), 92 states have internal predecessors, (22172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:01,842 INFO L175 Difference]: Start difference. First operand has 1063 places, 2701 transitions, 78021 flow. Second operand 91 states and 9565 transitions. [2023-09-01 02:37:01,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 3465 transitions, 106491 flow [2023-09-01 02:37:25,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1062 places, 3465 transitions, 101919 flow, removed 2203 selfloop flow, removed 48 redundant places. [2023-09-01 02:37:25,319 INFO L231 Difference]: Finished difference. Result has 1098 places, 2808 transitions, 82459 flow [2023-09-01 02:37:25,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=75627, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=696, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=82459, PETRI_PLACES=1098, PETRI_TRANSITIONS=2808} [2023-09-01 02:37:25,322 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1055 predicate places. [2023-09-01 02:37:25,322 INFO L495 AbstractCegarLoop]: Abstraction has has 1098 places, 2808 transitions, 82459 flow [2023-09-01 02:37:25,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.26666666666667) internal successors, (3008), 30 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:25,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:37:25,323 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:37:25,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-09-01 02:37:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-09-01 02:37:25,529 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:37:25,529 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:37:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2130179064, now seen corresponding path program 24 times [2023-09-01 02:37:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:37:25,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869607375] [2023-09-01 02:37:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:37:25,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:37:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:37:26,252 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:26,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:37:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869607375] [2023-09-01 02:37:26,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869607375] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:37:26,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [220105884] [2023-09-01 02:37:26,252 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:37:26,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:37:26,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:37:26,253 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:37:26,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-09-01 02:37:26,457 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-09-01 02:37:26,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:37:26,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-09-01 02:37:26,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:37:27,072 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:27,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:37:29,355 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:37:29,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [220105884] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:37:29,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:37:29,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-09-01 02:37:29,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789756148] [2023-09-01 02:37:29,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:37:29,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-09-01 02:37:29,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:37:29,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-09-01 02:37:29,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-09-01 02:37:29,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-09-01 02:37:29,538 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1098 places, 2808 transitions, 82459 flow. Second operand has 31 states, 31 states have (on average 97.83870967741936) internal successors, (3033), 31 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:37:29,538 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:37:29,538 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-09-01 02:37:29,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:38:21,009 INFO L130 PetriNetUnfolder]: 28578/47291 cut-off events. [2023-09-01 02:38:21,009 INFO L131 PetriNetUnfolder]: For 4521163/4521163 co-relation queries the response was YES. [2023-09-01 02:38:24,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543937 conditions, 47291 events. 28578/47291 cut-off events. For 4521163/4521163 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 381962 event pairs, 4181 based on Foata normal form. 460/47751 useless extension candidates. Maximal degree in co-relation 543697. Up to 24668 conditions per place. [2023-09-01 02:38:24,434 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 2336 selfloop transitions, 888 changer transitions 414/3638 dead transitions. [2023-09-01 02:38:24,434 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1187 places, 3638 transitions, 108721 flow [2023-09-01 02:38:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-09-01 02:38:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-09-01 02:38:24,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 13405 transitions. [2023-09-01 02:38:24,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213818684773042 [2023-09-01 02:38:24,445 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 13405 transitions. [2023-09-01 02:38:24,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 13405 transitions. [2023-09-01 02:38:24,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:38:24,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 13405 transitions. [2023-09-01 02:38:24,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 101.5530303030303) internal successors, (13405), 132 states have internal predecessors, (13405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 241.0) internal successors, (32053), 133 states have internal predecessors, (32053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,479 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 241.0) internal successors, (32053), 133 states have internal predecessors, (32053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:38:24,479 INFO L175 Difference]: Start difference. First operand has 1098 places, 2808 transitions, 82459 flow. Second operand 132 states and 13405 transitions. [2023-09-01 02:38:24,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1187 places, 3638 transitions, 108721 flow Killed by 15