./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-4.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-ticket-4.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 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --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 02:32:32,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:32:32,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:32:32,040 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:32:32,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:32:32,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:32:32,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:32:32,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:32:32,052 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:32:32,053 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:32:32,054 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:32:32,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:32:32,056 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:32:32,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:32:32,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:32:32,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:32:32,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:32:32,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:32:32,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:32:32,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:32:32,068 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:32:32,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:32:32,071 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:32:32,080 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:32:32,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:32:32,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:32:32,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:32:32,083 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:32:32,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:32:32,086 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:32:32,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:32:32,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:32:32,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:32:32,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:32:32,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:32:32,091 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:32:32,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:32:32,092 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:32:32,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:32:32,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:32:32,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:32:32,095 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:32:32,114 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:32:32,114 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:32:32,115 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:32:32,115 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:32:32,116 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:32:32,116 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:32:32,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:32:32,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:32:32,117 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:32:32,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:32:32,118 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:32:32,118 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:32:32,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:32:32,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:32:32,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:32:32,119 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:32:32,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:32:32,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:32:32,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:32:32,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:32,120 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:32:32,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:32:32,121 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:32:32,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:32:32,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:32:32,405 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:32:32,406 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:32:32,407 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:32:32,408 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:32:32,409 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-09-01 02:32:33,503 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:32:33,716 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:32:33,716 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-09-01 02:32:33,724 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fe47954/ea37badcbddd45e6ad8c6aa433197f8c/FLAG165c49daa [2023-09-01 02:32:33,751 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25fe47954/ea37badcbddd45e6ad8c6aa433197f8c [2023-09-01 02:32:33,753 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:32:33,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:32:33,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:33,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:32:33,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:32:33,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,762 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d526bce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33, skipping insertion in model container [2023-09-01 02:32:33,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:32:33,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:32:33,912 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-ticket-4.wvr.c[3526,3539] [2023-09-01 02:32:33,915 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:33,922 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:32:33,943 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-ticket-4.wvr.c[3526,3539] [2023-09-01 02:32:33,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:32:33,949 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:33,950 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:32:33,955 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:32:33,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33 WrapperNode [2023-09-01 02:32:33,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:32:33,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:33,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:32:33,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:32:33,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,967 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,985 INFO L138 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 206 [2023-09-01 02:32:33,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:32:33,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:32:33,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:32:33,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:32:33,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,995 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:33,999 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:34,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:34,003 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:34,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:34,005 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:32:34,006 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:32:34,006 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:32:34,006 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:32:34,007 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (1/1) ... [2023-09-01 02:32:34,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:32:34,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:32:34,073 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 02:32:34,082 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 02:32:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:32:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:32:34,116 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:32:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:32:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:32:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:32:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:32:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-09-01 02:32:34,117 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-09-01 02:32:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:32:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:32:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:32:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:32:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:32:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:32:34,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:32:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:32:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:32:34,121 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 02:32:34,196 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:32:34,202 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:32:34,589 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:32:34,639 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:32:34,640 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 02:32:34,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:34 BoogieIcfgContainer [2023-09-01 02:32:34,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:32:34,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:32:34,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:32:34,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:32:34,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:32:33" (1/3) ... [2023-09-01 02:32:34,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c6eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:34, skipping insertion in model container [2023-09-01 02:32:34,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:32:33" (2/3) ... [2023-09-01 02:32:34,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41c6eda6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:32:34, skipping insertion in model container [2023-09-01 02:32:34,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:34" (3/3) ... [2023-09-01 02:32:34,648 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-09-01 02:32:34,666 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:32:34,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-09-01 02:32:34,666 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:32:34,747 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 02:32:34,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 163 transitions, 358 flow [2023-09-01 02:32:34,813 INFO L130 PetriNetUnfolder]: 2/159 cut-off events. [2023-09-01 02:32:34,814 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:32:34,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 159 events. 2/159 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 111 event pairs, 0 based on Foata normal form. 0/139 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-09-01 02:32:34,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 163 transitions, 358 flow [2023-09-01 02:32:34,824 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 155 transitions, 334 flow [2023-09-01 02:32:34,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:32:34,832 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 155 transitions, 334 flow [2023-09-01 02:32:34,833 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 155 transitions, 334 flow [2023-09-01 02:32:34,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 155 transitions, 334 flow [2023-09-01 02:32:34,863 INFO L130 PetriNetUnfolder]: 2/155 cut-off events. [2023-09-01 02:32:34,863 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:32:34,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 155 events. 2/155 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 110 event pairs, 0 based on Foata normal form. 0/136 useless extension candidates. Maximal degree in co-relation 113. Up to 2 conditions per place. [2023-09-01 02:32:34,865 INFO L119 LiptonReduction]: Number of co-enabled transitions 1702 [2023-09-01 02:32:40,122 INFO L134 LiptonReduction]: Checked pairs total: 9805 [2023-09-01 02:32:40,122 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-09-01 02:32:40,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:32:40,152 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;@4d251a74, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:32:40,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-09-01 02:32:40,153 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:32:40,154 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:32:40,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:32:40,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:40,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,158 INFO L85 PathProgramCache]: Analyzing trace with hash 640, now seen corresponding path program 1 times [2023-09-01 02:32:40,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208898490] [2023-09-01 02:32:40,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:40,230 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 02:32:40,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:40,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208898490] [2023-09-01 02:32:40,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208898490] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:40,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:40,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:32:40,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267975574] [2023-09-01 02:32:40,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:40,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:32:40,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:40,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:32:40,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:32:40,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 306 [2023-09-01 02:32:40,256 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:40,256 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:40,256 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 306 [2023-09-01 02:32:40,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:40,703 INFO L130 PetriNetUnfolder]: 4185/6250 cut-off events. [2023-09-01 02:32:40,703 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-09-01 02:32:40,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12395 conditions, 6250 events. 4185/6250 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 352. Compared 35775 event pairs, 4185 based on Foata normal form. 0/5313 useless extension candidates. Maximal degree in co-relation 10254. Up to 5885 conditions per place. [2023-09-01 02:32:40,776 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-09-01 02:32:40,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-09-01 02:32:40,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:32:40,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:32:40,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 326 transitions. [2023-09-01 02:32:40,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5326797385620915 [2023-09-01 02:32:40,790 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 326 transitions. [2023-09-01 02:32:40,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 326 transitions. [2023-09-01 02:32:40,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:40,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 326 transitions. [2023-09-01 02:32:40,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 163.0) internal successors, (326), 2 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 02:32:40,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:40,800 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:40,801 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 326 transitions. [2023-09-01 02:32:40,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-09-01 02:32:40,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-09-01 02:32:40,812 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-09-01 02:32:40,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-09-01 02:32:40,816 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-09-01 02:32:40,818 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-09-01 02:32:40,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 140.5) internal successors, (281), 2 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:40,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:40,820 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:40,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:32:40,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:40,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:40,823 INFO L85 PathProgramCache]: Analyzing trace with hash 631870, now seen corresponding path program 1 times [2023-09-01 02:32:40,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:40,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550962775] [2023-09-01 02:32:40,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:40,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:41,041 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 02:32:41,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:41,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550962775] [2023-09-01 02:32:41,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550962775] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:41,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:41,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:41,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183051716] [2023-09-01 02:32:41,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:41,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:41,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:41,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:41,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:41,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-09-01 02:32:41,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:41,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-09-01 02:32:41,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:41,407 INFO L130 PetriNetUnfolder]: 4038/6033 cut-off events. [2023-09-01 02:32:41,407 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:41,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11790 conditions, 6033 events. 4038/6033 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 34506 event pairs, 4038 based on Foata normal form. 0/5164 useless extension candidates. Maximal degree in co-relation 11787. Up to 5669 conditions per place. [2023-09-01 02:32:41,434 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-09-01 02:32:41,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-09-01 02:32:41,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:41,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:41,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 430 transitions. [2023-09-01 02:32:41,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684095860566449 [2023-09-01 02:32:41,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 430 transitions. [2023-09-01 02:32:41,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 430 transitions. [2023-09-01 02:32:41,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:41,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 430 transitions. [2023-09-01 02:32:41,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,457 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,458 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,458 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 430 transitions. [2023-09-01 02:32:41,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-09-01 02:32:41,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:32:41,459 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-09-01 02:32:41,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-09-01 02:32:41,460 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-09-01 02:32:41,460 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-09-01 02:32:41,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:41,461 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:32:41,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:32:41,461 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:41,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:41,462 INFO L85 PathProgramCache]: Analyzing trace with hash 631869, now seen corresponding path program 1 times [2023-09-01 02:32:41,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:41,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468065578] [2023-09-01 02:32:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:41,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:41,596 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 02:32:41,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:41,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468065578] [2023-09-01 02:32:41,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468065578] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:41,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:41,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:41,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947885901] [2023-09-01 02:32:41,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:41,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:41,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:41,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:41,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:41,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-09-01 02:32:41,642 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:41,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:41,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-09-01 02:32:41,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:41,982 INFO L130 PetriNetUnfolder]: 3891/5816 cut-off events. [2023-09-01 02:32:41,983 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:41,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11360 conditions, 5816 events. 3891/5816 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 33192 event pairs, 3891 based on Foata normal form. 0/5015 useless extension candidates. Maximal degree in co-relation 11356. Up to 5454 conditions per place. [2023-09-01 02:32:42,006 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-09-01 02:32:42,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-09-01 02:32:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:42,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-09-01 02:32:42,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.485838779956427 [2023-09-01 02:32:42,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-09-01 02:32:42,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-09-01 02:32:42,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:42,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-09-01 02:32:42,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,011 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,011 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,012 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 446 transitions. [2023-09-01 02:32:42,012 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-09-01 02:32:42,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:42,014 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-09-01 02:32:42,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-09-01 02:32:42,015 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-09-01 02:32:42,018 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-09-01 02:32:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:42,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:42,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:32:42,019 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:42,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:42,021 INFO L85 PathProgramCache]: Analyzing trace with hash 607239920, now seen corresponding path program 1 times [2023-09-01 02:32:42,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:42,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123201902] [2023-09-01 02:32:42,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:42,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:42,084 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 02:32:42,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:42,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123201902] [2023-09-01 02:32:42,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123201902] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:42,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:42,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:42,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771278653] [2023-09-01 02:32:42,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:42,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:42,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:42,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:42,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:42,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-09-01 02:32:42,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:42,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-09-01 02:32:42,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:42,433 INFO L130 PetriNetUnfolder]: 3843/5732 cut-off events. [2023-09-01 02:32:42,434 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:42,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11197 conditions, 5732 events. 3843/5732 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32664 event pairs, 3843 based on Foata normal form. 0/4965 useless extension candidates. Maximal degree in co-relation 11193. Up to 5374 conditions per place. [2023-09-01 02:32:42,448 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-09-01 02:32:42,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-09-01 02:32:42,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:42,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:42,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 444 transitions. [2023-09-01 02:32:42,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48366013071895425 [2023-09-01 02:32:42,450 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 444 transitions. [2023-09-01 02:32:42,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 444 transitions. [2023-09-01 02:32:42,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:42,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 444 transitions. [2023-09-01 02:32:42,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,453 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 444 transitions. [2023-09-01 02:32:42,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-09-01 02:32:42,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:42,455 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-09-01 02:32:42,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-09-01 02:32:42,455 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-09-01 02:32:42,455 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-09-01 02:32:42,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:42,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:32:42,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:32:42,456 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:42,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:42,457 INFO L85 PathProgramCache]: Analyzing trace with hash 607239919, now seen corresponding path program 1 times [2023-09-01 02:32:42,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:42,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984238366] [2023-09-01 02:32:42,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:42,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:42,495 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 02:32:42,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:42,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984238366] [2023-09-01 02:32:42,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984238366] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:42,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:42,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:42,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594221303] [2023-09-01 02:32:42,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:42,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:42,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:42,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:42,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:42,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-09-01 02:32:42,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,532 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:42,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-09-01 02:32:42,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:42,816 INFO L130 PetriNetUnfolder]: 3795/5648 cut-off events. [2023-09-01 02:32:42,817 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:42,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 5648 events. 3795/5648 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 32188 event pairs, 3795 based on Foata normal form. 0/4915 useless extension candidates. Maximal degree in co-relation 11030. Up to 5294 conditions per place. [2023-09-01 02:32:42,832 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-09-01 02:32:42,833 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-09-01 02:32:42,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:42,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-09-01 02:32:42,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46187363834422657 [2023-09-01 02:32:42,834 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-09-01 02:32:42,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-09-01 02:32:42,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:42,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-09-01 02:32:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,837 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 424 transitions. [2023-09-01 02:32:42,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-09-01 02:32:42,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:42,838 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-09-01 02:32:42,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-09-01 02:32:42,839 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-09-01 02:32:42,839 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-09-01 02:32:42,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:42,840 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:42,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:32:42,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:42,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:42,840 INFO L85 PathProgramCache]: Analyzing trace with hash -557973210, now seen corresponding path program 1 times [2023-09-01 02:32:42,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:42,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568659953] [2023-09-01 02:32:42,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:42,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:42,866 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 02:32:42,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:42,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568659953] [2023-09-01 02:32:42,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568659953] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:42,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:42,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:42,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267855526] [2023-09-01 02:32:42,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:42,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:42,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:42,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:42,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:42,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-09-01 02:32:42,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:42,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:42,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-09-01 02:32:42,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:43,127 INFO L130 PetriNetUnfolder]: 3648/5417 cut-off events. [2023-09-01 02:32:43,127 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:43,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10589 conditions, 5417 events. 3648/5417 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 30580 event pairs, 3648 based on Foata normal form. 0/4756 useless extension candidates. Maximal degree in co-relation 10585. Up to 5079 conditions per place. [2023-09-01 02:32:43,144 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-09-01 02:32:43,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-09-01 02:32:43,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-09-01 02:32:43,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4596949891067538 [2023-09-01 02:32:43,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-09-01 02:32:43,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-09-01 02:32:43,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:43,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-09-01 02:32:43,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,150 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 422 transitions. [2023-09-01 02:32:43,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-09-01 02:32:43,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:43,151 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-09-01 02:32:43,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-09-01 02:32:43,151 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-09-01 02:32:43,151 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-09-01 02:32:43,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:43,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:43,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:32:43,152 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:43,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:43,153 INFO L85 PathProgramCache]: Analyzing trace with hash -557973211, now seen corresponding path program 1 times [2023-09-01 02:32:43,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:43,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179879536] [2023-09-01 02:32:43,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:43,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:43,221 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 02:32:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:43,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179879536] [2023-09-01 02:32:43,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179879536] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:43,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:43,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462193719] [2023-09-01 02:32:43,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:43,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:43,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 306 [2023-09-01 02:32:43,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:43,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 306 [2023-09-01 02:32:43,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:43,561 INFO L130 PetriNetUnfolder]: 3501/5186 cut-off events. [2023-09-01 02:32:43,561 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:43,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10144 conditions, 5186 events. 3501/5186 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 28972 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10140. Up to 4864 conditions per place. [2023-09-01 02:32:43,585 INFO L137 encePairwiseOnDemand]: 303/306 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-09-01 02:32:43,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-09-01 02:32:43,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:43,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:43,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 438 transitions. [2023-09-01 02:32:43,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.477124183006536 [2023-09-01 02:32:43,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 438 transitions. [2023-09-01 02:32:43,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 438 transitions. [2023-09-01 02:32:43,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:43,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 438 transitions. [2023-09-01 02:32:43,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,592 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 438 transitions. [2023-09-01 02:32:43,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-09-01 02:32:43,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:43,594 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-09-01 02:32:43,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-09-01 02:32:43,595 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-09-01 02:32:43,595 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-09-01 02:32:43,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:43,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:32:43,596 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:43,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash 658670065, now seen corresponding path program 1 times [2023-09-01 02:32:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:43,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659650791] [2023-09-01 02:32:43,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:43,731 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 02:32:43,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:43,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659650791] [2023-09-01 02:32:43,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659650791] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:43,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:43,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:32:43,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706176246] [2023-09-01 02:32:43,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:43,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:43,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:43,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:43,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:43,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 306 [2023-09-01 02:32:43,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:43,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:43,834 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 306 [2023-09-01 02:32:43,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:44,052 INFO L130 PetriNetUnfolder]: 2733/4098 cut-off events. [2023-09-01 02:32:44,053 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:44,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8033 conditions, 4098 events. 2733/4098 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 22379 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8029. Up to 3840 conditions per place. [2023-09-01 02:32:44,070 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-09-01 02:32:44,070 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-09-01 02:32:44,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:44,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:44,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2023-09-01 02:32:44,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41612200435729846 [2023-09-01 02:32:44,072 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2023-09-01 02:32:44,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2023-09-01 02:32:44,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:44,072 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2023-09-01 02:32:44,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,075 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,075 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 382 transitions. [2023-09-01 02:32:44,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-09-01 02:32:44,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:44,077 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-09-01 02:32:44,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-09-01 02:32:44,079 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-09-01 02:32:44,079 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-09-01 02:32:44,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 118.5) internal successors, (711), 6 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:44,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:44,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:32:44,080 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:44,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:44,081 INFO L85 PathProgramCache]: Analyzing trace with hash 658670063, now seen corresponding path program 1 times [2023-09-01 02:32:44,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:44,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859726792] [2023-09-01 02:32:44,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:44,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:44,117 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 02:32:44,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:44,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859726792] [2023-09-01 02:32:44,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859726792] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:44,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:44,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:32:44,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766047850] [2023-09-01 02:32:44,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:44,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:32:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:44,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:32:44,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:32:44,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 306 [2023-09-01 02:32:44,153 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,153 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:44,153 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 306 [2023-09-01 02:32:44,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:44,325 INFO L130 PetriNetUnfolder]: 1965/3010 cut-off events. [2023-09-01 02:32:44,326 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2023-09-01 02:32:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5922 conditions, 3010 events. 1965/3010 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 15801 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5918. Up to 2816 conditions per place. [2023-09-01 02:32:44,338 INFO L137 encePairwiseOnDemand]: 304/306 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-09-01 02:32:44,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-09-01 02:32:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:32:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:32:44,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-09-01 02:32:44,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45751633986928103 [2023-09-01 02:32:44,339 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-09-01 02:32:44,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-09-01 02:32:44,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:44,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-09-01 02:32:44,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 306.0) internal successors, (1224), 4 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,342 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 420 transitions. [2023-09-01 02:32:44,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-09-01 02:32:44,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:44,344 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-09-01 02:32:44,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-09-01 02:32:44,345 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-09-01 02:32:44,345 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-09-01 02:32:44,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:44,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:44,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:44,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:32:44,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:44,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:44,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1476785543, now seen corresponding path program 1 times [2023-09-01 02:32:44,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:44,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041308862] [2023-09-01 02:32:44,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:44,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:45,093 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 02:32:45,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:45,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041308862] [2023-09-01 02:32:45,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041308862] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:45,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:45,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:45,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905260770] [2023-09-01 02:32:45,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:45,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:45,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:45,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:45,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:45,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 306 [2023-09-01 02:32:45,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:45,137 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:45,137 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 306 [2023-09-01 02:32:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:45,892 INFO L130 PetriNetUnfolder]: 10161/14324 cut-off events. [2023-09-01 02:32:45,892 INFO L131 PetriNetUnfolder]: For 228/228 co-relation queries the response was YES. [2023-09-01 02:32:45,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28965 conditions, 14324 events. 10161/14324 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 75194 event pairs, 2626 based on Foata normal form. 2/14326 useless extension candidates. Maximal degree in co-relation 28961. Up to 4603 conditions per place. [2023-09-01 02:32:45,923 INFO L137 encePairwiseOnDemand]: 294/306 looper letters, 113 selfloop transitions, 18 changer transitions 20/151 dead transitions. [2023-09-01 02:32:45,923 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 151 transitions, 643 flow [2023-09-01 02:32:45,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:32:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:32:45,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1153 transitions. [2023-09-01 02:32:45,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4709967320261438 [2023-09-01 02:32:45,926 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1153 transitions. [2023-09-01 02:32:45,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1153 transitions. [2023-09-01 02:32:45,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:45,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1153 transitions. [2023-09-01 02:32:45,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 144.125) internal successors, (1153), 8 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:45,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:45,932 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:45,932 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 8 states and 1153 transitions. [2023-09-01 02:32:45,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 151 transitions, 643 flow [2023-09-01 02:32:45,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 151 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:45,936 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 220 flow [2023-09-01 02:32:45,936 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=220, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-09-01 02:32:45,937 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -3 predicate places. [2023-09-01 02:32:45,937 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 220 flow [2023-09-01 02:32:45,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:45,937 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:45,937 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:45,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:32:45,938 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:45,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:45,938 INFO L85 PathProgramCache]: Analyzing trace with hash 53361737, now seen corresponding path program 2 times [2023-09-01 02:32:45,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:45,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073287081] [2023-09-01 02:32:45,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:45,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:46,134 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 02:32:46,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:46,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073287081] [2023-09-01 02:32:46,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073287081] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:46,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:46,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:46,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447359194] [2023-09-01 02:32:46,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:46,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:46,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:46,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:46,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:46,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 02:32:46,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 220 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:46,162 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 02:32:46,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:46,558 INFO L130 PetriNetUnfolder]: 3556/5557 cut-off events. [2023-09-01 02:32:46,559 INFO L131 PetriNetUnfolder]: For 3407/3611 co-relation queries the response was YES. [2023-09-01 02:32:46,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 5557 events. 3556/5557 cut-off events. For 3407/3611 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32153 event pairs, 546 based on Foata normal form. 192/5557 useless extension candidates. Maximal degree in co-relation 14251. Up to 3451 conditions per place. [2023-09-01 02:32:46,588 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 79 selfloop transitions, 20 changer transitions 0/114 dead transitions. [2023-09-01 02:32:46,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 600 flow [2023-09-01 02:32:46,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:46,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:46,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1029 transitions. [2023-09-01 02:32:46,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4803921568627451 [2023-09-01 02:32:46,591 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1029 transitions. [2023-09-01 02:32:46,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1029 transitions. [2023-09-01 02:32:46,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:46,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1029 transitions. [2023-09-01 02:32:46,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,595 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,595 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 220 flow. Second operand 7 states and 1029 transitions. [2023-09-01 02:32:46,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 600 flow [2023-09-01 02:32:46,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 114 transitions, 585 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-09-01 02:32:46,605 INFO L231 Difference]: Finished difference. Result has 68 places, 65 transitions, 311 flow [2023-09-01 02:32:46,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=311, PETRI_PLACES=68, PETRI_TRANSITIONS=65} [2023-09-01 02:32:46,605 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-09-01 02:32:46,605 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 65 transitions, 311 flow [2023-09-01 02:32:46,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:46,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:46,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:32:46,607 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:46,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:46,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1215593255, now seen corresponding path program 3 times [2023-09-01 02:32:46,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:46,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913212128] [2023-09-01 02:32:46,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:46,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:46,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:46,791 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 02:32:46,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:46,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913212128] [2023-09-01 02:32:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913212128] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:46,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501549213] [2023-09-01 02:32:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:46,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:46,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:46,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 65 transitions, 311 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:46,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:46,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:46,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:47,147 INFO L130 PetriNetUnfolder]: 2780/4517 cut-off events. [2023-09-01 02:32:47,148 INFO L131 PetriNetUnfolder]: For 4413/4735 co-relation queries the response was YES. [2023-09-01 02:32:47,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13718 conditions, 4517 events. 2780/4517 cut-off events. For 4413/4735 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 26379 event pairs, 532 based on Foata normal form. 268/4661 useless extension candidates. Maximal degree in co-relation 13706. Up to 2821 conditions per place. [2023-09-01 02:32:47,168 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 75 selfloop transitions, 27 changer transitions 0/117 dead transitions. [2023-09-01 02:32:47,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 117 transitions, 701 flow [2023-09-01 02:32:47,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:47,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:47,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1016 transitions. [2023-09-01 02:32:47,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47432306255835666 [2023-09-01 02:32:47,171 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1016 transitions. [2023-09-01 02:32:47,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1016 transitions. [2023-09-01 02:32:47,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:47,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1016 transitions. [2023-09-01 02:32:47,173 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.14285714285714) internal successors, (1016), 7 states have internal predecessors, (1016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,175 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,176 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,176 INFO L175 Difference]: Start difference. First operand has 68 places, 65 transitions, 311 flow. Second operand 7 states and 1016 transitions. [2023-09-01 02:32:47,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 117 transitions, 701 flow [2023-09-01 02:32:47,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 117 transitions, 696 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:47,180 INFO L231 Difference]: Finished difference. Result has 75 places, 74 transitions, 419 flow [2023-09-01 02:32:47,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=419, PETRI_PLACES=75, PETRI_TRANSITIONS=74} [2023-09-01 02:32:47,181 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 11 predicate places. [2023-09-01 02:32:47,181 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 74 transitions, 419 flow [2023-09-01 02:32:47,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:47,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:47,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:32:47,182 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:47,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:47,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1297582879, now seen corresponding path program 4 times [2023-09-01 02:32:47,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:47,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597645495] [2023-09-01 02:32:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:47,337 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 02:32:47,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:47,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597645495] [2023-09-01 02:32:47,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597645495] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:47,338 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:47,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:47,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786370813] [2023-09-01 02:32:47,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:47,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:47,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:47,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:47,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:47,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 02:32:47,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 419 flow. Second operand has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:47,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 02:32:47,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:47,808 INFO L130 PetriNetUnfolder]: 2900/4763 cut-off events. [2023-09-01 02:32:47,809 INFO L131 PetriNetUnfolder]: For 6864/7276 co-relation queries the response was YES. [2023-09-01 02:32:47,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15816 conditions, 4763 events. 2900/4763 cut-off events. For 6864/7276 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28754 event pairs, 690 based on Foata normal form. 192/4813 useless extension candidates. Maximal degree in co-relation 15801. Up to 2800 conditions per place. [2023-09-01 02:32:47,844 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 76 selfloop transitions, 41 changer transitions 11/143 dead transitions. [2023-09-01 02:32:47,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 978 flow [2023-09-01 02:32:47,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:47,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:47,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1306 transitions. [2023-09-01 02:32:47,849 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421931735657225 [2023-09-01 02:32:47,849 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1306 transitions. [2023-09-01 02:32:47,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1306 transitions. [2023-09-01 02:32:47,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:47,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1306 transitions. [2023-09-01 02:32:47,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.11111111111111) internal successors, (1306), 9 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,856 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,856 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,856 INFO L175 Difference]: Start difference. First operand has 75 places, 74 transitions, 419 flow. Second operand 9 states and 1306 transitions. [2023-09-01 02:32:47,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 978 flow [2023-09-01 02:32:47,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 143 transitions, 973 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:47,866 INFO L231 Difference]: Finished difference. Result has 86 places, 90 transitions, 635 flow [2023-09-01 02:32:47,866 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=635, PETRI_PLACES=86, PETRI_TRANSITIONS=90} [2023-09-01 02:32:47,867 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 22 predicate places. [2023-09-01 02:32:47,867 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 90 transitions, 635 flow [2023-09-01 02:32:47,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 137.14285714285714) internal successors, (960), 7 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:47,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:47,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:47,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:32:47,868 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:47,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:47,869 INFO L85 PathProgramCache]: Analyzing trace with hash -474786319, now seen corresponding path program 5 times [2023-09-01 02:32:47,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:47,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794160185] [2023-09-01 02:32:47,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:47,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:48,012 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 02:32:48,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:48,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794160185] [2023-09-01 02:32:48,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794160185] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:48,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:48,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:48,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19002221] [2023-09-01 02:32:48,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:48,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:48,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:48,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:48,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:48,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:48,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 90 transitions, 635 flow. Second operand has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:48,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:48,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:48,389 INFO L130 PetriNetUnfolder]: 2260/3801 cut-off events. [2023-09-01 02:32:48,389 INFO L131 PetriNetUnfolder]: For 7055/7427 co-relation queries the response was YES. [2023-09-01 02:32:48,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13495 conditions, 3801 events. 2260/3801 cut-off events. For 7055/7427 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 22294 event pairs, 685 based on Foata normal form. 194/3885 useless extension candidates. Maximal degree in co-relation 13475. Up to 2444 conditions per place. [2023-09-01 02:32:48,410 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 57 selfloop transitions, 35 changer transitions 14/121 dead transitions. [2023-09-01 02:32:48,411 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 121 transitions, 968 flow [2023-09-01 02:32:48,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:48,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:48,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1004 transitions. [2023-09-01 02:32:48,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46872082166199813 [2023-09-01 02:32:48,413 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1004 transitions. [2023-09-01 02:32:48,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1004 transitions. [2023-09-01 02:32:48,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:48,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1004 transitions. [2023-09-01 02:32:48,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 143.42857142857142) internal successors, (1004), 7 states have internal predecessors, (1004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,418 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,418 INFO L175 Difference]: Start difference. First operand has 86 places, 90 transitions, 635 flow. Second operand 7 states and 1004 transitions. [2023-09-01 02:32:48,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 121 transitions, 968 flow [2023-09-01 02:32:48,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 121 transitions, 949 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-09-01 02:32:48,428 INFO L231 Difference]: Finished difference. Result has 91 places, 84 transitions, 662 flow [2023-09-01 02:32:48,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=662, PETRI_PLACES=91, PETRI_TRANSITIONS=84} [2023-09-01 02:32:48,429 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 27 predicate places. [2023-09-01 02:32:48,429 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 84 transitions, 662 flow [2023-09-01 02:32:48,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.83333333333334) internal successors, (821), 6 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:48,430 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:48,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:32:48,430 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:48,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:48,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1164946831, now seen corresponding path program 6 times [2023-09-01 02:32:48,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:48,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525437040] [2023-09-01 02:32:48,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:48,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:48,586 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 02:32:48,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:48,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525437040] [2023-09-01 02:32:48,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525437040] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:48,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:48,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:32:48,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75851159] [2023-09-01 02:32:48,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:48,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:32:48,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:48,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:32:48,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:32:48,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 306 [2023-09-01 02:32:48,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 84 transitions, 662 flow. Second operand has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,607 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:48,607 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 306 [2023-09-01 02:32:48,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:48,870 INFO L130 PetriNetUnfolder]: 1199/2126 cut-off events. [2023-09-01 02:32:48,871 INFO L131 PetriNetUnfolder]: For 4207/4409 co-relation queries the response was YES. [2023-09-01 02:32:48,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7590 conditions, 2126 events. 1199/2126 cut-off events. For 4207/4409 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 11507 event pairs, 390 based on Foata normal form. 168/2224 useless extension candidates. Maximal degree in co-relation 7568. Up to 1402 conditions per place. [2023-09-01 02:32:48,884 INFO L137 encePairwiseOnDemand]: 297/306 looper letters, 70 selfloop transitions, 38 changer transitions 0/119 dead transitions. [2023-09-01 02:32:48,885 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 119 transitions, 1052 flow [2023-09-01 02:32:48,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:32:48,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:32:48,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1010 transitions. [2023-09-01 02:32:48,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4715219421101774 [2023-09-01 02:32:48,887 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1010 transitions. [2023-09-01 02:32:48,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1010 transitions. [2023-09-01 02:32:48,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:48,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1010 transitions. [2023-09-01 02:32:48,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.28571428571428) internal successors, (1010), 7 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,892 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 306.0) internal successors, (2448), 8 states have internal predecessors, (2448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,892 INFO L175 Difference]: Start difference. First operand has 91 places, 84 transitions, 662 flow. Second operand 7 states and 1010 transitions. [2023-09-01 02:32:48,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 119 transitions, 1052 flow [2023-09-01 02:32:48,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 119 transitions, 971 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:48,900 INFO L231 Difference]: Finished difference. Result has 81 places, 83 transitions, 703 flow [2023-09-01 02:32:48,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=703, PETRI_PLACES=81, PETRI_TRANSITIONS=83} [2023-09-01 02:32:48,900 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 17 predicate places. [2023-09-01 02:32:48,901 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 83 transitions, 703 flow [2023-09-01 02:32:48,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.83333333333334) internal successors, (827), 6 states have internal predecessors, (827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:48,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:48,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:48,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 02:32:48,902 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:48,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:48,902 INFO L85 PathProgramCache]: Analyzing trace with hash -140225591, now seen corresponding path program 7 times [2023-09-01 02:32:48,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:48,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305768293] [2023-09-01 02:32:48,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:48,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:49,072 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 02:32:49,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:49,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305768293] [2023-09-01 02:32:49,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305768293] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:49,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:49,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:49,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437664767] [2023-09-01 02:32:49,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:49,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:49,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:49,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:49,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:49,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:49,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 83 transitions, 703 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:49,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:49,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:49,611 INFO L130 PetriNetUnfolder]: 2620/4741 cut-off events. [2023-09-01 02:32:49,612 INFO L131 PetriNetUnfolder]: For 7240/7668 co-relation queries the response was YES. [2023-09-01 02:32:49,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14989 conditions, 4741 events. 2620/4741 cut-off events. For 7240/7668 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 31924 event pairs, 441 based on Foata normal form. 150/4727 useless extension candidates. Maximal degree in co-relation 14971. Up to 1748 conditions per place. [2023-09-01 02:32:49,649 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 100 selfloop transitions, 59 changer transitions 0/170 dead transitions. [2023-09-01 02:32:49,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 170 transitions, 1377 flow [2023-09-01 02:32:49,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:49,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:49,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1311 transitions. [2023-09-01 02:32:49,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4760348583877996 [2023-09-01 02:32:49,654 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1311 transitions. [2023-09-01 02:32:49,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1311 transitions. [2023-09-01 02:32:49,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:49,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1311 transitions. [2023-09-01 02:32:49,657 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.66666666666666) internal successors, (1311), 9 states have internal predecessors, (1311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,661 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,661 INFO L175 Difference]: Start difference. First operand has 81 places, 83 transitions, 703 flow. Second operand 9 states and 1311 transitions. [2023-09-01 02:32:49,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 170 transitions, 1377 flow [2023-09-01 02:32:49,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 170 transitions, 1365 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:49,676 INFO L231 Difference]: Finished difference. Result has 90 places, 102 transitions, 993 flow [2023-09-01 02:32:49,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=993, PETRI_PLACES=90, PETRI_TRANSITIONS=102} [2023-09-01 02:32:49,677 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-09-01 02:32:49,677 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 102 transitions, 993 flow [2023-09-01 02:32:49,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:49,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:49,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 02:32:49,683 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:49,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1222155345, now seen corresponding path program 8 times [2023-09-01 02:32:49,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:49,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561973781] [2023-09-01 02:32:49,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:49,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:49,866 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 02:32:49,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:49,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561973781] [2023-09-01 02:32:49,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561973781] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:49,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:49,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:32:49,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310858213] [2023-09-01 02:32:49,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:49,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:32:49,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:49,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:32:49,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:32:49,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:49,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 102 transitions, 993 flow. Second operand has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:49,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:49,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:49,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:50,345 INFO L130 PetriNetUnfolder]: 2600/4767 cut-off events. [2023-09-01 02:32:50,345 INFO L131 PetriNetUnfolder]: For 12049/12825 co-relation queries the response was YES. [2023-09-01 02:32:50,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17632 conditions, 4767 events. 2600/4767 cut-off events. For 12049/12825 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 32597 event pairs, 423 based on Foata normal form. 352/4943 useless extension candidates. Maximal degree in co-relation 17611. Up to 1744 conditions per place. [2023-09-01 02:32:50,371 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 93 selfloop transitions, 61 changer transitions 4/169 dead transitions. [2023-09-01 02:32:50,384 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 169 transitions, 1592 flow [2023-09-01 02:32:50,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:32:50,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:32:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1307 transitions. [2023-09-01 02:32:50,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745824255628177 [2023-09-01 02:32:50,392 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1307 transitions. [2023-09-01 02:32:50,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1307 transitions. [2023-09-01 02:32:50,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:50,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1307 transitions. [2023-09-01 02:32:50,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.22222222222223) internal successors, (1307), 9 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:50,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:50,397 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:50,397 INFO L175 Difference]: Start difference. First operand has 90 places, 102 transitions, 993 flow. Second operand 9 states and 1307 transitions. [2023-09-01 02:32:50,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 169 transitions, 1592 flow [2023-09-01 02:32:50,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 169 transitions, 1576 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-09-01 02:32:50,414 INFO L231 Difference]: Finished difference. Result has 99 places, 106 transitions, 1164 flow [2023-09-01 02:32:50,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1164, PETRI_PLACES=99, PETRI_TRANSITIONS=106} [2023-09-01 02:32:50,415 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 35 predicate places. [2023-09-01 02:32:50,415 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 106 transitions, 1164 flow [2023-09-01 02:32:50,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 136.14285714285714) internal successors, (953), 7 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:50,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:50,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:50,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 02:32:50,416 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:50,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:50,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2122783463, now seen corresponding path program 9 times [2023-09-01 02:32:50,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:50,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184632049] [2023-09-01 02:32:50,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:50,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:50,565 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 02:32:50,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:50,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184632049] [2023-09-01 02:32:50,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184632049] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:50,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:50,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:50,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774170642] [2023-09-01 02:32:50,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:50,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:50,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:50,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:50,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:50,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:50,601 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 106 transitions, 1164 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:50,601 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:50,601 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:50,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:51,184 INFO L130 PetriNetUnfolder]: 2691/5022 cut-off events. [2023-09-01 02:32:51,184 INFO L131 PetriNetUnfolder]: For 16860/17682 co-relation queries the response was YES. [2023-09-01 02:32:51,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19983 conditions, 5022 events. 2691/5022 cut-off events. For 16860/17682 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 35599 event pairs, 437 based on Foata normal form. 388/5218 useless extension candidates. Maximal degree in co-relation 19959. Up to 1753 conditions per place. [2023-09-01 02:32:51,218 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 115 selfloop transitions, 76 changer transitions 4/206 dead transitions. [2023-09-01 02:32:51,218 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 206 transitions, 2118 flow [2023-09-01 02:32:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:32:51,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:32:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1735 transitions. [2023-09-01 02:32:51,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4724945533769063 [2023-09-01 02:32:51,222 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1735 transitions. [2023-09-01 02:32:51,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1735 transitions. [2023-09-01 02:32:51,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:51,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1735 transitions. [2023-09-01 02:32:51,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.58333333333334) internal successors, (1735), 12 states have internal predecessors, (1735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,229 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,229 INFO L175 Difference]: Start difference. First operand has 99 places, 106 transitions, 1164 flow. Second operand 12 states and 1735 transitions. [2023-09-01 02:32:51,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 206 transitions, 2118 flow [2023-09-01 02:32:51,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 206 transitions, 2029 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:32:51,247 INFO L231 Difference]: Finished difference. Result has 108 places, 121 transitions, 1453 flow [2023-09-01 02:32:51,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1453, PETRI_PLACES=108, PETRI_TRANSITIONS=121} [2023-09-01 02:32:51,247 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2023-09-01 02:32:51,247 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 121 transitions, 1453 flow [2023-09-01 02:32:51,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:51,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:51,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 02:32:51,248 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:51,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:51,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1246124463, now seen corresponding path program 10 times [2023-09-01 02:32:51,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:51,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433864725] [2023-09-01 02:32:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:51,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:51,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:51,390 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 02:32:51,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:51,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433864725] [2023-09-01 02:32:51,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433864725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:51,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:51,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:51,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119665668] [2023-09-01 02:32:51,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:51,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:51,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:51,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:51,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:51,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:51,412 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 121 transitions, 1453 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,413 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:51,413 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:51,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:51,954 INFO L130 PetriNetUnfolder]: 2624/4929 cut-off events. [2023-09-01 02:32:51,954 INFO L131 PetriNetUnfolder]: For 20012/20864 co-relation queries the response was YES. [2023-09-01 02:32:51,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20473 conditions, 4929 events. 2624/4929 cut-off events. For 20012/20864 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 35029 event pairs, 499 based on Foata normal form. 318/5053 useless extension candidates. Maximal degree in co-relation 20447. Up to 1732 conditions per place. [2023-09-01 02:32:51,987 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 107 selfloop transitions, 84 changer transitions 8/210 dead transitions. [2023-09-01 02:32:51,987 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 210 transitions, 2331 flow [2023-09-01 02:32:51,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:32:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:32:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1729 transitions. [2023-09-01 02:32:51,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47086056644880175 [2023-09-01 02:32:51,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1729 transitions. [2023-09-01 02:32:51,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1729 transitions. [2023-09-01 02:32:51,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:51,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1729 transitions. [2023-09-01 02:32:51,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.08333333333334) internal successors, (1729), 12 states have internal predecessors, (1729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,996 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:51,996 INFO L175 Difference]: Start difference. First operand has 108 places, 121 transitions, 1453 flow. Second operand 12 states and 1729 transitions. [2023-09-01 02:32:51,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 210 transitions, 2331 flow [2023-09-01 02:32:52,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 210 transitions, 2200 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 02:32:52,022 INFO L231 Difference]: Finished difference. Result has 115 places, 129 transitions, 1592 flow [2023-09-01 02:32:52,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1341, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1592, PETRI_PLACES=115, PETRI_TRANSITIONS=129} [2023-09-01 02:32:52,023 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 51 predicate places. [2023-09-01 02:32:52,023 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 129 transitions, 1592 flow [2023-09-01 02:32:52,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:52,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:52,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 02:32:52,023 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:52,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:52,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1899180883, now seen corresponding path program 11 times [2023-09-01 02:32:52,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:52,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539758822] [2023-09-01 02:32:52,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:52,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:52,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:32:52,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:52,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539758822] [2023-09-01 02:32:52,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539758822] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:52,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:52,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:52,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475522812] [2023-09-01 02:32:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:52,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:52,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:52,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:52,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 129 transitions, 1592 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:52,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:52,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:52,692 INFO L130 PetriNetUnfolder]: 2060/3931 cut-off events. [2023-09-01 02:32:52,692 INFO L131 PetriNetUnfolder]: For 19824/20592 co-relation queries the response was YES. [2023-09-01 02:32:52,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17156 conditions, 3931 events. 2060/3931 cut-off events. For 19824/20592 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 27137 event pairs, 470 based on Foata normal form. 422/4251 useless extension candidates. Maximal degree in co-relation 17128. Up to 1546 conditions per place. [2023-09-01 02:32:52,720 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 103 selfloop transitions, 100 changer transitions 19/233 dead transitions. [2023-09-01 02:32:52,720 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 233 transitions, 2850 flow [2023-09-01 02:32:52,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:32:52,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:32:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-09-01 02:32:52,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-09-01 02:32:52,722 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-09-01 02:32:52,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-09-01 02:32:52,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:52,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-09-01 02:32:52,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,732 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,733 INFO L175 Difference]: Start difference. First operand has 115 places, 129 transitions, 1592 flow. Second operand 11 states and 1590 transitions. [2023-09-01 02:32:52,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 233 transitions, 2850 flow [2023-09-01 02:32:52,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 233 transitions, 2783 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-09-01 02:32:52,762 INFO L231 Difference]: Finished difference. Result has 122 places, 146 transitions, 2052 flow [2023-09-01 02:32:52,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1538, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2052, PETRI_PLACES=122, PETRI_TRANSITIONS=146} [2023-09-01 02:32:52,763 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 58 predicate places. [2023-09-01 02:32:52,763 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 146 transitions, 2052 flow [2023-09-01 02:32:52,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:52,764 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:52,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 02:32:52,764 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:52,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:52,765 INFO L85 PathProgramCache]: Analyzing trace with hash -381515783, now seen corresponding path program 12 times [2023-09-01 02:32:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:52,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125641885] [2023-09-01 02:32:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:52,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:52,934 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 02:32:52,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:52,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125641885] [2023-09-01 02:32:52,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125641885] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:52,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:52,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:52,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369275419] [2023-09-01 02:32:52,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:52,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:52,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:52,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:52,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:52,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:52,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 146 transitions, 2052 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:52,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:52,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:52,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:53,480 INFO L130 PetriNetUnfolder]: 2353/4608 cut-off events. [2023-09-01 02:32:53,481 INFO L131 PetriNetUnfolder]: For 27066/27828 co-relation queries the response was YES. [2023-09-01 02:32:53,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20783 conditions, 4608 events. 2353/4608 cut-off events. For 27066/27828 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33383 event pairs, 190 based on Foata normal form. 210/4704 useless extension candidates. Maximal degree in co-relation 20751. Up to 1404 conditions per place. [2023-09-01 02:32:53,510 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 105 selfloop transitions, 125 changer transitions 2/243 dead transitions. [2023-09-01 02:32:53,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 243 transitions, 3012 flow [2023-09-01 02:32:53,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:32:53,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:32:53,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1456 transitions. [2023-09-01 02:32:53,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47581699346405226 [2023-09-01 02:32:53,513 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1456 transitions. [2023-09-01 02:32:53,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1456 transitions. [2023-09-01 02:32:53,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:53,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1456 transitions. [2023-09-01 02:32:53,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 145.6) internal successors, (1456), 10 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:53,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:53,520 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:53,521 INFO L175 Difference]: Start difference. First operand has 122 places, 146 transitions, 2052 flow. Second operand 10 states and 1456 transitions. [2023-09-01 02:32:53,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 243 transitions, 3012 flow [2023-09-01 02:32:53,555 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 243 transitions, 2937 flow, removed 11 selfloop flow, removed 6 redundant places. [2023-09-01 02:32:53,557 INFO L231 Difference]: Finished difference. Result has 128 places, 170 transitions, 2590 flow [2023-09-01 02:32:53,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1988, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2590, PETRI_PLACES=128, PETRI_TRANSITIONS=170} [2023-09-01 02:32:53,558 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 64 predicate places. [2023-09-01 02:32:53,558 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 170 transitions, 2590 flow [2023-09-01 02:32:53,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:53,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:53,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:53,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 02:32:53,559 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:53,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash 389047513, now seen corresponding path program 13 times [2023-09-01 02:32:53,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:53,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329301127] [2023-09-01 02:32:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:53,781 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 02:32:53,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:53,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329301127] [2023-09-01 02:32:53,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329301127] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:53,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:53,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:32:53,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004100617] [2023-09-01 02:32:53,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:53,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:32:53,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:53,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:32:53,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:32:53,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:53,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 170 transitions, 2590 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:53,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:53,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:54,525 INFO L130 PetriNetUnfolder]: 2428/4805 cut-off events. [2023-09-01 02:32:54,525 INFO L131 PetriNetUnfolder]: For 38626/39658 co-relation queries the response was YES. [2023-09-01 02:32:54,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24137 conditions, 4805 events. 2428/4805 cut-off events. For 38626/39658 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 35238 event pairs, 408 based on Foata normal form. 210/4901 useless extension candidates. Maximal degree in co-relation 24103. Up to 1945 conditions per place. [2023-09-01 02:32:54,555 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 120 selfloop transitions, 141 changer transitions 2/274 dead transitions. [2023-09-01 02:32:54,556 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 274 transitions, 3937 flow [2023-09-01 02:32:54,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:32:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:32:54,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1859 transitions. [2023-09-01 02:32:54,558 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4673202614379085 [2023-09-01 02:32:54,558 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1859 transitions. [2023-09-01 02:32:54,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1859 transitions. [2023-09-01 02:32:54,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:54,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1859 transitions. [2023-09-01 02:32:54,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 143.0) internal successors, (1859), 13 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,564 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 306.0) internal successors, (4284), 14 states have internal predecessors, (4284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,564 INFO L175 Difference]: Start difference. First operand has 128 places, 170 transitions, 2590 flow. Second operand 13 states and 1859 transitions. [2023-09-01 02:32:54,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 274 transitions, 3937 flow [2023-09-01 02:32:54,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 274 transitions, 3782 flow, removed 55 selfloop flow, removed 5 redundant places. [2023-09-01 02:32:54,625 INFO L231 Difference]: Finished difference. Result has 139 places, 209 transitions, 3456 flow [2023-09-01 02:32:54,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2487, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=3456, PETRI_PLACES=139, PETRI_TRANSITIONS=209} [2023-09-01 02:32:54,626 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-09-01 02:32:54,626 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 209 transitions, 3456 flow [2023-09-01 02:32:54,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:54,626 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:54,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 02:32:54,627 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:54,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:54,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1523814905, now seen corresponding path program 14 times [2023-09-01 02:32:54,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:54,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385956558] [2023-09-01 02:32:54,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:54,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:54,788 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 02:32:54,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:54,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385956558] [2023-09-01 02:32:54,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385956558] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:32:54,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272105556] [2023-09-01 02:32:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:32:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:32:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:32:54,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:54,815 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 209 transitions, 3456 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:54,815 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:54,815 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:54,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:55,506 INFO L130 PetriNetUnfolder]: 2397/4869 cut-off events. [2023-09-01 02:32:55,507 INFO L131 PetriNetUnfolder]: For 46258/47266 co-relation queries the response was YES. [2023-09-01 02:32:55,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25955 conditions, 4869 events. 2397/4869 cut-off events. For 46258/47266 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 36427 event pairs, 334 based on Foata normal form. 378/5181 useless extension candidates. Maximal degree in co-relation 25917. Up to 1365 conditions per place. [2023-09-01 02:32:55,538 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 143 selfloop transitions, 165 changer transitions 10/329 dead transitions. [2023-09-01 02:32:55,538 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 329 transitions, 5127 flow [2023-09-01 02:32:55,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:32:55,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:32:55,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1732 transitions. [2023-09-01 02:32:55,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47167755991285404 [2023-09-01 02:32:55,540 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1732 transitions. [2023-09-01 02:32:55,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1732 transitions. [2023-09-01 02:32:55,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:55,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1732 transitions. [2023-09-01 02:32:55,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 144.33333333333334) internal successors, (1732), 12 states have internal predecessors, (1732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:55,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:55,545 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:55,546 INFO L175 Difference]: Start difference. First operand has 139 places, 209 transitions, 3456 flow. Second operand 12 states and 1732 transitions. [2023-09-01 02:32:55,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 329 transitions, 5127 flow [2023-09-01 02:32:55,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 329 transitions, 4978 flow, removed 35 selfloop flow, removed 4 redundant places. [2023-09-01 02:32:55,619 INFO L231 Difference]: Finished difference. Result has 148 places, 246 transitions, 4290 flow [2023-09-01 02:32:55,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3335, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4290, PETRI_PLACES=148, PETRI_TRANSITIONS=246} [2023-09-01 02:32:55,620 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 84 predicate places. [2023-09-01 02:32:55,620 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 246 transitions, 4290 flow [2023-09-01 02:32:55,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:55,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:55,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 02:32:55,621 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:55,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:55,621 INFO L85 PathProgramCache]: Analyzing trace with hash -983768009, now seen corresponding path program 15 times [2023-09-01 02:32:55,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:55,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667992512] [2023-09-01 02:32:55,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:55,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:55,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:55,765 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 02:32:55,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:55,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667992512] [2023-09-01 02:32:55,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667992512] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:55,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:55,765 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:32:55,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055917341] [2023-09-01 02:32:55,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:55,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:32:55,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:55,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:32:55,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:32:55,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:55,789 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 246 transitions, 4290 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:55,789 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:55,789 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:55,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:56,569 INFO L130 PetriNetUnfolder]: 2324/4756 cut-off events. [2023-09-01 02:32:56,569 INFO L131 PetriNetUnfolder]: For 56915/57885 co-relation queries the response was YES. [2023-09-01 02:32:56,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27115 conditions, 4756 events. 2324/4756 cut-off events. For 56915/57885 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 35690 event pairs, 402 based on Foata normal form. 284/4962 useless extension candidates. Maximal degree in co-relation 27074. Up to 1916 conditions per place. [2023-09-01 02:32:56,604 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 148 selfloop transitions, 159 changer transitions 5/323 dead transitions. [2023-09-01 02:32:56,604 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 323 transitions, 5399 flow [2023-09-01 02:32:56,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:32:56,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:32:56,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2135 transitions. [2023-09-01 02:32:56,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4651416122004357 [2023-09-01 02:32:56,607 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2135 transitions. [2023-09-01 02:32:56,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2135 transitions. [2023-09-01 02:32:56,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:56,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2135 transitions. [2023-09-01 02:32:56,609 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 142.33333333333334) internal successors, (2135), 15 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,612 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,613 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,613 INFO L175 Difference]: Start difference. First operand has 148 places, 246 transitions, 4290 flow. Second operand 15 states and 2135 transitions. [2023-09-01 02:32:56,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 323 transitions, 5399 flow [2023-09-01 02:32:56,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 323 transitions, 5146 flow, removed 58 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:56,726 INFO L231 Difference]: Finished difference. Result has 154 places, 245 transitions, 4379 flow [2023-09-01 02:32:56,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4063, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=155, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=4379, PETRI_PLACES=154, PETRI_TRANSITIONS=245} [2023-09-01 02:32:56,726 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 90 predicate places. [2023-09-01 02:32:56,726 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 245 transitions, 4379 flow [2023-09-01 02:32:56,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:56,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:56,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 02:32:56,727 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:56,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:56,727 INFO L85 PathProgramCache]: Analyzing trace with hash -671271949, now seen corresponding path program 16 times [2023-09-01 02:32:56,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:56,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192772992] [2023-09-01 02:32:56,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:56,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:56,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:56,879 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 02:32:56,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:56,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192772992] [2023-09-01 02:32:56,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192772992] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:56,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:56,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:32:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469469102] [2023-09-01 02:32:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:56,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:32:56,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:32:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:32:56,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:56,911 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 245 transitions, 4379 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:56,912 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:56,912 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:56,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:57,764 INFO L130 PetriNetUnfolder]: 2321/4773 cut-off events. [2023-09-01 02:32:57,764 INFO L131 PetriNetUnfolder]: For 59456/60452 co-relation queries the response was YES. [2023-09-01 02:32:57,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27534 conditions, 4773 events. 2321/4773 cut-off events. For 59456/60452 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 36002 event pairs, 410 based on Foata normal form. 284/4979 useless extension candidates. Maximal degree in co-relation 27493. Up to 1922 conditions per place. [2023-09-01 02:32:57,803 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 152 selfloop transitions, 162 changer transitions 14/339 dead transitions. [2023-09-01 02:32:57,804 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 339 transitions, 5698 flow [2023-09-01 02:32:57,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 02:32:57,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 02:32:57,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2681 transitions. [2023-09-01 02:32:57,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4611283109735122 [2023-09-01 02:32:57,806 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2681 transitions. [2023-09-01 02:32:57,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2681 transitions. [2023-09-01 02:32:57,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:57,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2681 transitions. [2023-09-01 02:32:57,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 141.10526315789474) internal successors, (2681), 19 states have internal predecessors, (2681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:57,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:57,814 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 306.0) internal successors, (6120), 20 states have internal predecessors, (6120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:57,814 INFO L175 Difference]: Start difference. First operand has 154 places, 245 transitions, 4379 flow. Second operand 19 states and 2681 transitions. [2023-09-01 02:32:57,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 339 transitions, 5698 flow [2023-09-01 02:32:57,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 339 transitions, 5530 flow, removed 7 selfloop flow, removed 9 redundant places. [2023-09-01 02:32:57,926 INFO L231 Difference]: Finished difference. Result has 164 places, 248 transitions, 4646 flow [2023-09-01 02:32:57,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4237, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4646, PETRI_PLACES=164, PETRI_TRANSITIONS=248} [2023-09-01 02:32:57,927 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 100 predicate places. [2023-09-01 02:32:57,927 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 248 transitions, 4646 flow [2023-09-01 02:32:57,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:57,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:57,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:57,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 02:32:57,928 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:57,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:57,928 INFO L85 PathProgramCache]: Analyzing trace with hash -789055745, now seen corresponding path program 17 times [2023-09-01 02:32:57,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:57,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007692452] [2023-09-01 02:32:57,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:57,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:58,089 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 02:32:58,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:58,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007692452] [2023-09-01 02:32:58,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007692452] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:58,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:58,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:32:58,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064108736] [2023-09-01 02:32:58,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:58,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:32:58,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:58,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:32:58,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:32:58,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:58,113 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 248 transitions, 4646 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:58,113 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:58,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:58,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:32:58,982 INFO L130 PetriNetUnfolder]: 2366/4883 cut-off events. [2023-09-01 02:32:58,982 INFO L131 PetriNetUnfolder]: For 67902/68978 co-relation queries the response was YES. [2023-09-01 02:32:59,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28870 conditions, 4883 events. 2366/4883 cut-off events. For 67902/68978 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 37403 event pairs, 410 based on Foata normal form. 374/5181 useless extension candidates. Maximal degree in co-relation 28829. Up to 1921 conditions per place. [2023-09-01 02:32:59,026 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 131 selfloop transitions, 135 changer transitions 76/353 dead transitions. [2023-09-01 02:32:59,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 353 transitions, 6339 flow [2023-09-01 02:32:59,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:32:59,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:32:59,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2414 transitions. [2023-09-01 02:32:59,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46405228758169936 [2023-09-01 02:32:59,029 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2414 transitions. [2023-09-01 02:32:59,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2414 transitions. [2023-09-01 02:32:59,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:32:59,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2414 transitions. [2023-09-01 02:32:59,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 142.0) internal successors, (2414), 17 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,035 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 306.0) internal successors, (5508), 18 states have internal predecessors, (5508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,035 INFO L175 Difference]: Start difference. First operand has 164 places, 248 transitions, 4646 flow. Second operand 17 states and 2414 transitions. [2023-09-01 02:32:59,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 353 transitions, 6339 flow [2023-09-01 02:32:59,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 353 transitions, 5963 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-09-01 02:32:59,174 INFO L231 Difference]: Finished difference. Result has 166 places, 220 transitions, 3996 flow [2023-09-01 02:32:59,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4322, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3996, PETRI_PLACES=166, PETRI_TRANSITIONS=220} [2023-09-01 02:32:59,174 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-09-01 02:32:59,174 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 220 transitions, 3996 flow [2023-09-01 02:32:59,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:32:59,175 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:32:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 02:32:59,175 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:32:59,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:32:59,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1827200889, now seen corresponding path program 18 times [2023-09-01 02:32:59,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:32:59,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406249020] [2023-09-01 02:32:59,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:32:59,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:32:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:32:59,360 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 02:32:59,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:32:59,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406249020] [2023-09-01 02:32:59,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406249020] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:32:59,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:32:59,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:32:59,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020430000] [2023-09-01 02:32:59,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:32:59,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:32:59,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:32:59,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:32:59,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:32:59,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:32:59,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 220 transitions, 3996 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:32:59,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:32:59,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:32:59,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:00,065 INFO L130 PetriNetUnfolder]: 2118/4375 cut-off events. [2023-09-01 02:33:00,065 INFO L131 PetriNetUnfolder]: For 62863/63785 co-relation queries the response was YES. [2023-09-01 02:33:00,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26002 conditions, 4375 events. 2118/4375 cut-off events. For 62863/63785 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 32688 event pairs, 570 based on Foata normal form. 108/4419 useless extension candidates. Maximal degree in co-relation 25959. Up to 3289 conditions per place. [2023-09-01 02:33:00,095 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 210 selfloop transitions, 48 changer transitions 8/277 dead transitions. [2023-09-01 02:33:00,095 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 277 transitions, 4939 flow [2023-09-01 02:33:00,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 02:33:00,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 02:33:00,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2231 transitions. [2023-09-01 02:33:00,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556781045751634 [2023-09-01 02:33:00,098 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2231 transitions. [2023-09-01 02:33:00,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2231 transitions. [2023-09-01 02:33:00,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:00,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2231 transitions. [2023-09-01 02:33:00,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.4375) internal successors, (2231), 16 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,103 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,103 INFO L175 Difference]: Start difference. First operand has 166 places, 220 transitions, 3996 flow. Second operand 16 states and 2231 transitions. [2023-09-01 02:33:00,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 277 transitions, 4939 flow [2023-09-01 02:33:00,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 277 transitions, 4763 flow, removed 13 selfloop flow, removed 12 redundant places. [2023-09-01 02:33:00,194 INFO L231 Difference]: Finished difference. Result has 163 places, 221 transitions, 3946 flow [2023-09-01 02:33:00,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3835, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3946, PETRI_PLACES=163, PETRI_TRANSITIONS=221} [2023-09-01 02:33:00,194 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-09-01 02:33:00,194 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 221 transitions, 3946 flow [2023-09-01 02:33:00,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:00,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:00,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 02:33:00,195 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:00,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:00,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1055248889, now seen corresponding path program 19 times [2023-09-01 02:33:00,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:00,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483040256] [2023-09-01 02:33:00,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:00,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:00,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:00,343 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 02:33:00,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:00,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483040256] [2023-09-01 02:33:00,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483040256] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:00,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:00,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-09-01 02:33:00,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222324525] [2023-09-01 02:33:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:33:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:33:00,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:33:00,368 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 306 [2023-09-01 02:33:00,369 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 221 transitions, 3946 flow. Second operand has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,369 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:00,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 306 [2023-09-01 02:33:00,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:00,924 INFO L130 PetriNetUnfolder]: 1936/4194 cut-off events. [2023-09-01 02:33:00,924 INFO L131 PetriNetUnfolder]: For 59261/59759 co-relation queries the response was YES. [2023-09-01 02:33:00,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24199 conditions, 4194 events. 1936/4194 cut-off events. For 59261/59759 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 32330 event pairs, 346 based on Foata normal form. 230/4382 useless extension candidates. Maximal degree in co-relation 24157. Up to 1162 conditions per place. [2023-09-01 02:33:00,953 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 129 selfloop transitions, 137 changer transitions 13/290 dead transitions. [2023-09-01 02:33:00,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 290 transitions, 5024 flow [2023-09-01 02:33:00,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:33:00,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:33:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1182 transitions. [2023-09-01 02:33:00,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48284313725490197 [2023-09-01 02:33:00,955 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1182 transitions. [2023-09-01 02:33:00,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1182 transitions. [2023-09-01 02:33:00,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:00,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1182 transitions. [2023-09-01 02:33:00,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 147.75) internal successors, (1182), 8 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,958 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 306.0) internal successors, (2754), 9 states have internal predecessors, (2754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:00,958 INFO L175 Difference]: Start difference. First operand has 163 places, 221 transitions, 3946 flow. Second operand 8 states and 1182 transitions. [2023-09-01 02:33:00,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 290 transitions, 5024 flow [2023-09-01 02:33:01,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 290 transitions, 4922 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-09-01 02:33:01,037 INFO L231 Difference]: Finished difference. Result has 160 places, 232 transitions, 4473 flow [2023-09-01 02:33:01,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3828, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=125, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4473, PETRI_PLACES=160, PETRI_TRANSITIONS=232} [2023-09-01 02:33:01,038 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 96 predicate places. [2023-09-01 02:33:01,038 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 232 transitions, 4473 flow [2023-09-01 02:33:01,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.14285714285714) internal successors, (967), 7 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:01,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:01,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 02:33:01,039 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:01,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:01,039 INFO L85 PathProgramCache]: Analyzing trace with hash -285930057, now seen corresponding path program 20 times [2023-09-01 02:33:01,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:01,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423974480] [2023-09-01 02:33:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:01,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:01,160 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 02:33:01,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:01,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423974480] [2023-09-01 02:33:01,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423974480] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:01,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:01,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:01,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653924052] [2023-09-01 02:33:01,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:01,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:01,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:01,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:01,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:01,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:01,177 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 232 transitions, 4473 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,177 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:01,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:01,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:01,861 INFO L130 PetriNetUnfolder]: 1886/4021 cut-off events. [2023-09-01 02:33:01,861 INFO L131 PetriNetUnfolder]: For 67085/68225 co-relation queries the response was YES. [2023-09-01 02:33:01,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25243 conditions, 4021 events. 1886/4021 cut-off events. For 67085/68225 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30314 event pairs, 159 based on Foata normal form. 436/4409 useless extension candidates. Maximal degree in co-relation 25200. Up to 1188 conditions per place. [2023-09-01 02:33:01,892 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 99 selfloop transitions, 178 changer transitions 9/297 dead transitions. [2023-09-01 02:33:01,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 297 transitions, 5400 flow [2023-09-01 02:33:01,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:33:01,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:33:01,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1445 transitions. [2023-09-01 02:33:01,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2023-09-01 02:33:01,909 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1445 transitions. [2023-09-01 02:33:01,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1445 transitions. [2023-09-01 02:33:01,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:01,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1445 transitions. [2023-09-01 02:33:01,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 144.5) internal successors, (1445), 10 states have internal predecessors, (1445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,923 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:01,923 INFO L175 Difference]: Start difference. First operand has 160 places, 232 transitions, 4473 flow. Second operand 10 states and 1445 transitions. [2023-09-01 02:33:01,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 297 transitions, 5400 flow [2023-09-01 02:33:02,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 297 transitions, 5322 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 02:33:02,021 INFO L231 Difference]: Finished difference. Result has 166 places, 229 transitions, 4740 flow [2023-09-01 02:33:02,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4395, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4740, PETRI_PLACES=166, PETRI_TRANSITIONS=229} [2023-09-01 02:33:02,022 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 102 predicate places. [2023-09-01 02:33:02,023 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 229 transitions, 4740 flow [2023-09-01 02:33:02,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:02,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:02,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 02:33:02,023 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:02,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:02,024 INFO L85 PathProgramCache]: Analyzing trace with hash 675694263, now seen corresponding path program 21 times [2023-09-01 02:33:02,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:02,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474755640] [2023-09-01 02:33:02,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:02,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:02,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:02,182 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 02:33:02,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:02,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474755640] [2023-09-01 02:33:02,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474755640] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:02,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:02,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:02,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749980507] [2023-09-01 02:33:02,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:02,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:02,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:02,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:02,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:02,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:02,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 229 transitions, 4740 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:02,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:02,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:02,950 INFO L130 PetriNetUnfolder]: 1886/4052 cut-off events. [2023-09-01 02:33:02,950 INFO L131 PetriNetUnfolder]: For 76929/77973 co-relation queries the response was YES. [2023-09-01 02:33:02,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26928 conditions, 4052 events. 1886/4052 cut-off events. For 76929/77973 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 30796 event pairs, 151 based on Foata normal form. 378/4380 useless extension candidates. Maximal degree in co-relation 26884. Up to 1128 conditions per place. [2023-09-01 02:33:02,980 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 108 selfloop transitions, 181 changer transitions 6/306 dead transitions. [2023-09-01 02:33:02,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 306 transitions, 5838 flow [2023-09-01 02:33:02,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:02,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:02,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1590 transitions. [2023-09-01 02:33:02,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47237076648841353 [2023-09-01 02:33:02,982 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1590 transitions. [2023-09-01 02:33:02,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1590 transitions. [2023-09-01 02:33:02,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:02,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1590 transitions. [2023-09-01 02:33:02,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.54545454545453) internal successors, (1590), 11 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,985 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:02,986 INFO L175 Difference]: Start difference. First operand has 166 places, 229 transitions, 4740 flow. Second operand 11 states and 1590 transitions. [2023-09-01 02:33:02,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 306 transitions, 5838 flow [2023-09-01 02:33:03,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 306 transitions, 5471 flow, removed 14 selfloop flow, removed 10 redundant places. [2023-09-01 02:33:03,099 INFO L231 Difference]: Finished difference. Result has 167 places, 233 transitions, 4857 flow [2023-09-01 02:33:03,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4411, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4857, PETRI_PLACES=167, PETRI_TRANSITIONS=233} [2023-09-01 02:33:03,100 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 103 predicate places. [2023-09-01 02:33:03,101 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 233 transitions, 4857 flow [2023-09-01 02:33:03,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:03,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:03,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 02:33:03,101 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:03,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:03,102 INFO L85 PathProgramCache]: Analyzing trace with hash -719863875, now seen corresponding path program 22 times [2023-09-01 02:33:03,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:03,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965609411] [2023-09-01 02:33:03,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:03,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:03,273 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 02:33:03,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:03,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965609411] [2023-09-01 02:33:03,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965609411] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:03,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:03,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:03,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160744689] [2023-09-01 02:33:03,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:03,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:03,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:03,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:03,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:03,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-09-01 02:33:03,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 233 transitions, 4857 flow. Second operand has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:03,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:03,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-09-01 02:33:03,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:04,212 INFO L130 PetriNetUnfolder]: 2371/4770 cut-off events. [2023-09-01 02:33:04,213 INFO L131 PetriNetUnfolder]: For 90921/92089 co-relation queries the response was YES. [2023-09-01 02:33:04,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30803 conditions, 4770 events. 2371/4770 cut-off events. For 90921/92089 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 35179 event pairs, 215 based on Foata normal form. 422/5136 useless extension candidates. Maximal degree in co-relation 30760. Up to 1463 conditions per place. [2023-09-01 02:33:04,254 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 109 selfloop transitions, 178 changer transitions 22/319 dead transitions. [2023-09-01 02:33:04,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 319 transitions, 6066 flow [2023-09-01 02:33:04,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:33:04,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:33:04,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1698 transitions. [2023-09-01 02:33:04,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4624183006535948 [2023-09-01 02:33:04,279 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1698 transitions. [2023-09-01 02:33:04,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1698 transitions. [2023-09-01 02:33:04,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:04,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1698 transitions. [2023-09-01 02:33:04,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 141.5) internal successors, (1698), 12 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:04,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:04,298 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 306.0) internal successors, (3978), 13 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:04,298 INFO L175 Difference]: Start difference. First operand has 167 places, 233 transitions, 4857 flow. Second operand 12 states and 1698 transitions. [2023-09-01 02:33:04,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 319 transitions, 6066 flow [2023-09-01 02:33:04,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 319 transitions, 5716 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-09-01 02:33:04,424 INFO L231 Difference]: Finished difference. Result has 172 places, 229 transitions, 4825 flow [2023-09-01 02:33:04,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4525, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=4825, PETRI_PLACES=172, PETRI_TRANSITIONS=229} [2023-09-01 02:33:04,432 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-09-01 02:33:04,432 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 229 transitions, 4825 flow [2023-09-01 02:33:04,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 132.33333333333334) internal successors, (1191), 9 states have internal predecessors, (1191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:04,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:04,432 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:04,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 02:33:04,433 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:04,433 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash 472995197, now seen corresponding path program 23 times [2023-09-01 02:33:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225842393] [2023-09-01 02:33:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:04,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:04,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:04,626 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 02:33:04,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:04,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225842393] [2023-09-01 02:33:04,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225842393] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:04,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:04,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:04,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416333764] [2023-09-01 02:33:04,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:04,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:04,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:04,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:04,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:04,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:04,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 229 transitions, 4825 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:04,646 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:04,646 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:04,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:05,365 INFO L130 PetriNetUnfolder]: 1806/3929 cut-off events. [2023-09-01 02:33:05,365 INFO L131 PetriNetUnfolder]: For 77203/78293 co-relation queries the response was YES. [2023-09-01 02:33:05,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26334 conditions, 3929 events. 1806/3929 cut-off events. For 77203/78293 co-relation queries the response was YES. Maximal size of possible extension queue 243. Compared 30031 event pairs, 164 based on Foata normal form. 416/4303 useless extension candidates. Maximal degree in co-relation 26290. Up to 1094 conditions per place. [2023-09-01 02:33:05,394 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 104 selfloop transitions, 173 changer transitions 17/305 dead transitions. [2023-09-01 02:33:05,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 305 transitions, 5872 flow [2023-09-01 02:33:05,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:05,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1593 transitions. [2023-09-01 02:33:05,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732620320855615 [2023-09-01 02:33:05,397 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1593 transitions. [2023-09-01 02:33:05,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1593 transitions. [2023-09-01 02:33:05,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:05,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1593 transitions. [2023-09-01 02:33:05,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 144.8181818181818) internal successors, (1593), 11 states have internal predecessors, (1593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,401 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,401 INFO L175 Difference]: Start difference. First operand has 172 places, 229 transitions, 4825 flow. Second operand 11 states and 1593 transitions. [2023-09-01 02:33:05,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 305 transitions, 5872 flow [2023-09-01 02:33:05,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 305 transitions, 5652 flow, removed 7 selfloop flow, removed 11 redundant places. [2023-09-01 02:33:05,503 INFO L231 Difference]: Finished difference. Result has 173 places, 224 transitions, 4905 flow [2023-09-01 02:33:05,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4585, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4905, PETRI_PLACES=173, PETRI_TRANSITIONS=224} [2023-09-01 02:33:05,504 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 109 predicate places. [2023-09-01 02:33:05,504 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 224 transitions, 4905 flow [2023-09-01 02:33:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:05,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:05,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 02:33:05,507 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:05,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:05,507 INFO L85 PathProgramCache]: Analyzing trace with hash -585421383, now seen corresponding path program 24 times [2023-09-01 02:33:05,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:05,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276530805] [2023-09-01 02:33:05,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:05,687 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 02:33:05,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:05,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276530805] [2023-09-01 02:33:05,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276530805] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:05,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:05,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:33:05,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962246915] [2023-09-01 02:33:05,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:05,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:33:05,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:05,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:33:05,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:33:05,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:05,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 224 transitions, 4905 flow. Second operand has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:05,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:05,711 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:05,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:06,369 INFO L130 PetriNetUnfolder]: 1614/3514 cut-off events. [2023-09-01 02:33:06,370 INFO L131 PetriNetUnfolder]: For 82097/82823 co-relation queries the response was YES. [2023-09-01 02:33:06,387 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24172 conditions, 3514 events. 1614/3514 cut-off events. For 82097/82823 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 26466 event pairs, 414 based on Foata normal form. 188/3660 useless extension candidates. Maximal degree in co-relation 24128. Up to 2309 conditions per place. [2023-09-01 02:33:06,398 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 202 selfloop transitions, 64 changer transitions 5/282 dead transitions. [2023-09-01 02:33:06,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 282 transitions, 5921 flow [2023-09-01 02:33:06,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 02:33:06,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 02:33:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2238 transitions. [2023-09-01 02:33:06,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4571078431372549 [2023-09-01 02:33:06,401 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2238 transitions. [2023-09-01 02:33:06,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2238 transitions. [2023-09-01 02:33:06,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:06,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2238 transitions. [2023-09-01 02:33:06,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 139.875) internal successors, (2238), 16 states have internal predecessors, (2238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,410 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 306.0) internal successors, (5202), 17 states have internal predecessors, (5202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,411 INFO L175 Difference]: Start difference. First operand has 173 places, 224 transitions, 4905 flow. Second operand 16 states and 2238 transitions. [2023-09-01 02:33:06,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 282 transitions, 5921 flow [2023-09-01 02:33:06,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 282 transitions, 5768 flow, removed 10 selfloop flow, removed 7 redundant places. [2023-09-01 02:33:06,513 INFO L231 Difference]: Finished difference. Result has 183 places, 225 transitions, 4933 flow [2023-09-01 02:33:06,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4772, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4933, PETRI_PLACES=183, PETRI_TRANSITIONS=225} [2023-09-01 02:33:06,513 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 119 predicate places. [2023-09-01 02:33:06,514 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 225 transitions, 4933 flow [2023-09-01 02:33:06,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 134.9) internal successors, (1349), 10 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:06,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:06,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 02:33:06,514 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:06,515 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:06,515 INFO L85 PathProgramCache]: Analyzing trace with hash 462488823, now seen corresponding path program 25 times [2023-09-01 02:33:06,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:06,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828723112] [2023-09-01 02:33:06,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:06,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:06,640 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 02:33:06,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:06,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828723112] [2023-09-01 02:33:06,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828723112] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:06,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:06,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:06,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150563026] [2023-09-01 02:33:06,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:06,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:06,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:06,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:06,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:06,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:06,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 225 transitions, 4933 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:06,669 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:06,669 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:06,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:07,256 INFO L130 PetriNetUnfolder]: 1566/3430 cut-off events. [2023-09-01 02:33:07,256 INFO L131 PetriNetUnfolder]: For 79940/80732 co-relation queries the response was YES. [2023-09-01 02:33:07,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23132 conditions, 3430 events. 1566/3430 cut-off events. For 79940/80732 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 25798 event pairs, 280 based on Foata normal form. 272/3660 useless extension candidates. Maximal degree in co-relation 23088. Up to 1197 conditions per place. [2023-09-01 02:33:07,290 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 121 selfloop transitions, 129 changer transitions 18/278 dead transitions. [2023-09-01 02:33:07,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 278 transitions, 5775 flow [2023-09-01 02:33:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:07,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1571 transitions. [2023-09-01 02:33:07,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4667260843731432 [2023-09-01 02:33:07,292 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1571 transitions. [2023-09-01 02:33:07,293 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1571 transitions. [2023-09-01 02:33:07,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:07,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1571 transitions. [2023-09-01 02:33:07,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 142.8181818181818) internal successors, (1571), 11 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,325 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,326 INFO L175 Difference]: Start difference. First operand has 183 places, 225 transitions, 4933 flow. Second operand 11 states and 1571 transitions. [2023-09-01 02:33:07,326 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 278 transitions, 5775 flow [2023-09-01 02:33:07,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 278 transitions, 5672 flow, removed 15 selfloop flow, removed 10 redundant places. [2023-09-01 02:33:07,415 INFO L231 Difference]: Finished difference. Result has 184 places, 218 transitions, 4977 flow [2023-09-01 02:33:07,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=4811, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4977, PETRI_PLACES=184, PETRI_TRANSITIONS=218} [2023-09-01 02:33:07,416 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 120 predicate places. [2023-09-01 02:33:07,416 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 218 transitions, 4977 flow [2023-09-01 02:33:07,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:07,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:07,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 02:33:07,417 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:07,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:07,417 INFO L85 PathProgramCache]: Analyzing trace with hash -177458077, now seen corresponding path program 26 times [2023-09-01 02:33:07,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:07,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564917632] [2023-09-01 02:33:07,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:07,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:07,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:07,548 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 02:33:07,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:07,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564917632] [2023-09-01 02:33:07,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564917632] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:07,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:07,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:07,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070857257] [2023-09-01 02:33:07,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:07,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:07,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:07,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:07,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:07,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:07,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 218 transitions, 4977 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:07,570 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:07,570 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:07,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:07,989 INFO L130 PetriNetUnfolder]: 1178/2601 cut-off events. [2023-09-01 02:33:07,990 INFO L131 PetriNetUnfolder]: For 68155/68525 co-relation queries the response was YES. [2023-09-01 02:33:08,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18403 conditions, 2601 events. 1178/2601 cut-off events. For 68155/68525 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18575 event pairs, 354 based on Foata normal form. 86/2655 useless extension candidates. Maximal degree in co-relation 18358. Up to 1907 conditions per place. [2023-09-01 02:33:08,008 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 165 selfloop transitions, 23 changer transitions 17/215 dead transitions. [2023-09-01 02:33:08,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 215 transitions, 4836 flow [2023-09-01 02:33:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-09-01 02:33:08,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-09-01 02:33:08,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1401 transitions. [2023-09-01 02:33:08,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45784313725490194 [2023-09-01 02:33:08,010 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1401 transitions. [2023-09-01 02:33:08,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1401 transitions. [2023-09-01 02:33:08,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:08,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1401 transitions. [2023-09-01 02:33:08,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 140.1) internal successors, (1401), 10 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,014 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 306.0) internal successors, (3366), 11 states have internal predecessors, (3366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,014 INFO L175 Difference]: Start difference. First operand has 184 places, 218 transitions, 4977 flow. Second operand 10 states and 1401 transitions. [2023-09-01 02:33:08,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 215 transitions, 4836 flow [2023-09-01 02:33:08,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 215 transitions, 4467 flow, removed 22 selfloop flow, removed 14 redundant places. [2023-09-01 02:33:08,075 INFO L231 Difference]: Finished difference. Result has 172 places, 176 transitions, 3586 flow [2023-09-01 02:33:08,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=3792, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3586, PETRI_PLACES=172, PETRI_TRANSITIONS=176} [2023-09-01 02:33:08,076 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 108 predicate places. [2023-09-01 02:33:08,076 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 176 transitions, 3586 flow [2023-09-01 02:33:08,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:08,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 02:33:08,076 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:08,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:08,077 INFO L85 PathProgramCache]: Analyzing trace with hash -977182193, now seen corresponding path program 27 times [2023-09-01 02:33:08,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:08,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709832113] [2023-09-01 02:33:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:08,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:08,204 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 02:33:08,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:08,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709832113] [2023-09-01 02:33:08,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709832113] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:08,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:08,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:08,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748472443] [2023-09-01 02:33:08,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:08,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:08,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:08,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:08,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:08,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:08,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 176 transitions, 3586 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:08,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:08,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:08,542 INFO L130 PetriNetUnfolder]: 763/1728 cut-off events. [2023-09-01 02:33:08,542 INFO L131 PetriNetUnfolder]: For 28332/28610 co-relation queries the response was YES. [2023-09-01 02:33:08,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10917 conditions, 1728 events. 763/1728 cut-off events. For 28332/28610 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11308 event pairs, 194 based on Foata normal form. 114/1828 useless extension candidates. Maximal degree in co-relation 10876. Up to 1106 conditions per place. [2023-09-01 02:33:08,553 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 113 selfloop transitions, 29 changer transitions 25/177 dead transitions. [2023-09-01 02:33:08,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 177 transitions, 3217 flow [2023-09-01 02:33:08,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:33:08,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:33:08,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1541 transitions. [2023-09-01 02:33:08,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45781342840166367 [2023-09-01 02:33:08,555 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1541 transitions. [2023-09-01 02:33:08,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1541 transitions. [2023-09-01 02:33:08,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:08,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1541 transitions. [2023-09-01 02:33:08,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 140.0909090909091) internal successors, (1541), 11 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,570 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 306.0) internal successors, (3672), 12 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,570 INFO L175 Difference]: Start difference. First operand has 172 places, 176 transitions, 3586 flow. Second operand 11 states and 1541 transitions. [2023-09-01 02:33:08,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 177 transitions, 3217 flow [2023-09-01 02:33:08,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 177 transitions, 3082 flow, removed 10 selfloop flow, removed 15 redundant places. [2023-09-01 02:33:08,635 INFO L231 Difference]: Finished difference. Result has 163 places, 129 transitions, 2191 flow [2023-09-01 02:33:08,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2191, PETRI_PLACES=163, PETRI_TRANSITIONS=129} [2023-09-01 02:33:08,635 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 99 predicate places. [2023-09-01 02:33:08,636 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 129 transitions, 2191 flow [2023-09-01 02:33:08,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:08,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:08,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 02:33:08,636 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:08,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:08,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1035502487, now seen corresponding path program 28 times [2023-09-01 02:33:08,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:08,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604940762] [2023-09-01 02:33:08,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:08,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:08,824 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 02:33:08,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:08,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604940762] [2023-09-01 02:33:08,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604940762] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:08,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:08,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-09-01 02:33:08,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624853584] [2023-09-01 02:33:08,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:08,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-09-01 02:33:08,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:08,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-09-01 02:33:08,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-09-01 02:33:08,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 306 [2023-09-01 02:33:08,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 129 transitions, 2191 flow. Second operand has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:08,906 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:08,906 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 306 [2023-09-01 02:33:08,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:09,298 INFO L130 PetriNetUnfolder]: 756/1587 cut-off events. [2023-09-01 02:33:09,298 INFO L131 PetriNetUnfolder]: For 22006/22178 co-relation queries the response was YES. [2023-09-01 02:33:09,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9350 conditions, 1587 events. 756/1587 cut-off events. For 22006/22178 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9562 event pairs, 250 based on Foata normal form. 48/1617 useless extension candidates. Maximal degree in co-relation 9309. Up to 1185 conditions per place. [2023-09-01 02:33:09,312 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 86 selfloop transitions, 11 changer transitions 46/152 dead transitions. [2023-09-01 02:33:09,312 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 152 transitions, 2470 flow [2023-09-01 02:33:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:33:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:33:09,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 2029 transitions. [2023-09-01 02:33:09,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4420479302832244 [2023-09-01 02:33:09,315 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 2029 transitions. [2023-09-01 02:33:09,315 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 2029 transitions. [2023-09-01 02:33:09,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:09,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 2029 transitions. [2023-09-01 02:33:09,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 135.26666666666668) internal successors, (2029), 15 states have internal predecessors, (2029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,321 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 306.0) internal successors, (4896), 16 states have internal predecessors, (4896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,321 INFO L175 Difference]: Start difference. First operand has 163 places, 129 transitions, 2191 flow. Second operand 15 states and 2029 transitions. [2023-09-01 02:33:09,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 152 transitions, 2470 flow [2023-09-01 02:33:09,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 152 transitions, 2078 flow, removed 55 selfloop flow, removed 34 redundant places. [2023-09-01 02:33:09,355 INFO L231 Difference]: Finished difference. Result has 139 places, 92 transitions, 1169 flow [2023-09-01 02:33:09,355 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=1605, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1169, PETRI_PLACES=139, PETRI_TRANSITIONS=92} [2023-09-01 02:33:09,356 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 75 predicate places. [2023-09-01 02:33:09,356 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 92 transitions, 1169 flow [2023-09-01 02:33:09,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 132.0) internal successors, (1320), 10 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,356 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:09,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:09,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 02:33:09,357 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:09,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:09,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1988646801, now seen corresponding path program 29 times [2023-09-01 02:33:09,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:09,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996476077] [2023-09-01 02:33:09,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:09,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:09,531 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 02:33:09,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:09,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996476077] [2023-09-01 02:33:09,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996476077] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:09,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:09,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-09-01 02:33:09,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757565249] [2023-09-01 02:33:09,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 02:33:09,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:09,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 02:33:09,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-09-01 02:33:09,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:09,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 92 transitions, 1169 flow. Second operand has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,562 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:09,562 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:09,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:09,708 INFO L130 PetriNetUnfolder]: 143/356 cut-off events. [2023-09-01 02:33:09,708 INFO L131 PetriNetUnfolder]: For 4132/4228 co-relation queries the response was YES. [2023-09-01 02:33:09,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 356 events. 143/356 cut-off events. For 4132/4228 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1510 event pairs, 2 based on Foata normal form. 80/436 useless extension candidates. Maximal degree in co-relation 2067. Up to 110 conditions per place. [2023-09-01 02:33:09,711 INFO L137 encePairwiseOnDemand]: 296/306 looper letters, 37 selfloop transitions, 15 changer transitions 27/87 dead transitions. [2023-09-01 02:33:09,711 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 87 transitions, 976 flow [2023-09-01 02:33:09,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:33:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:33:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1261 transitions. [2023-09-01 02:33:09,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578794480755265 [2023-09-01 02:33:09,714 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1261 transitions. [2023-09-01 02:33:09,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1261 transitions. [2023-09-01 02:33:09,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:09,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1261 transitions. [2023-09-01 02:33:09,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 140.11111111111111) internal successors, (1261), 9 states have internal predecessors, (1261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,718 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,718 INFO L175 Difference]: Start difference. First operand has 139 places, 92 transitions, 1169 flow. Second operand 9 states and 1261 transitions. [2023-09-01 02:33:09,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 87 transitions, 976 flow [2023-09-01 02:33:09,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 87 transitions, 740 flow, removed 46 selfloop flow, removed 34 redundant places. [2023-09-01 02:33:09,726 INFO L231 Difference]: Finished difference. Result has 94 places, 43 transitions, 300 flow [2023-09-01 02:33:09,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=300, PETRI_PLACES=94, PETRI_TRANSITIONS=43} [2023-09-01 02:33:09,728 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-09-01 02:33:09,729 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 43 transitions, 300 flow [2023-09-01 02:33:09,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.625) internal successors, (1085), 8 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:33:09,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:09,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 02:33:09,733 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-09-01 02:33:09,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:33:09,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2058135143, now seen corresponding path program 30 times [2023-09-01 02:33:09,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:33:09,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398512550] [2023-09-01 02:33:09,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:33:09,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:33:09,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:33:09,903 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 02:33:09,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:33:09,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398512550] [2023-09-01 02:33:09,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398512550] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:33:09,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:33:09,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-09-01 02:33:09,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796437338] [2023-09-01 02:33:09,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:33:09,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-09-01 02:33:09,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:33:09,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-09-01 02:33:09,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-09-01 02:33:09,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 306 [2023-09-01 02:33:09,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 43 transitions, 300 flow. Second operand has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:09,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:33:09,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 306 [2023-09-01 02:33:09,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:33:10,007 INFO L130 PetriNetUnfolder]: 36/103 cut-off events. [2023-09-01 02:33:10,007 INFO L131 PetriNetUnfolder]: For 572/572 co-relation queries the response was YES. [2023-09-01 02:33:10,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 524 conditions, 103 events. 36/103 cut-off events. For 572/572 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 279 event pairs, 0 based on Foata normal form. 4/107 useless extension candidates. Maximal degree in co-relation 501. Up to 23 conditions per place. [2023-09-01 02:33:10,008 INFO L137 encePairwiseOnDemand]: 298/306 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-09-01 02:33:10,008 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 42 transitions, 350 flow [2023-09-01 02:33:10,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:33:10,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:33:10,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1226 transitions. [2023-09-01 02:33:10,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44517066085693535 [2023-09-01 02:33:10,011 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1226 transitions. [2023-09-01 02:33:10,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1226 transitions. [2023-09-01 02:33:10,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:33:10,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1226 transitions. [2023-09-01 02:33:10,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.22222222222223) internal successors, (1226), 9 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:10,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:10,014 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 306.0) internal successors, (3060), 10 states have internal predecessors, (3060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:10,014 INFO L175 Difference]: Start difference. First operand has 94 places, 43 transitions, 300 flow. Second operand 9 states and 1226 transitions. [2023-09-01 02:33:10,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 42 transitions, 350 flow [2023-09-01 02:33:10,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 201 flow, removed 20 selfloop flow, removed 29 redundant places. [2023-09-01 02:33:10,016 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2023-09-01 02:33:10,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=306, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2023-09-01 02:33:10,016 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-09-01 02:33:10,016 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2023-09-01 02:33:10,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 135.22222222222223) internal successors, (1217), 9 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:33:10,019 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-09-01 02:33:10,020 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-09-01 02:33:10,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-09-01 02:33:10,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-09-01 02:33:10,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-09-01 02:33:10,023 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-09-01 02:33:10,024 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-09-01 02:33:10,025 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-09-01 02:33:10,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 02:33:10,026 INFO L445 BasicCegarLoop]: Path program histogram: [30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:33:10,029 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:33:10,029 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:33:10,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:33:10 BasicIcfg [2023-09-01 02:33:10,033 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:33:10,033 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:33:10,033 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:33:10,034 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:33:10,034 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:32:34" (3/4) ... [2023-09-01 02:33:10,037 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:33:10,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:33:10,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:33:10,041 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 02:33:10,042 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-09-01 02:33:10,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2023-09-01 02:33:10,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:33:10,047 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:33:10,048 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:33:10,092 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:33:10,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:33:10,096 INFO L158 Benchmark]: Toolchain (without parser) took 36338.74ms. Allocated memory was 73.4MB in the beginning and 2.1GB in the end (delta: 2.1GB). Free memory was 50.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2023-09-01 02:33:10,097 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 34.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:33:10,097 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.53ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 38.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 02:33:10,097 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.06ms. Allocated memory is still 73.4MB. Free memory was 38.5MB in the beginning and 36.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:33:10,098 INFO L158 Benchmark]: Boogie Preprocessor took 19.91ms. Allocated memory is still 73.4MB. Free memory was 36.3MB in the beginning and 34.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:33:10,098 INFO L158 Benchmark]: RCFGBuilder took 635.87ms. Allocated memory is still 73.4MB. Free memory was 34.8MB in the beginning and 29.4MB in the end (delta: 5.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2023-09-01 02:33:10,098 INFO L158 Benchmark]: TraceAbstraction took 35389.84ms. Allocated memory was 73.4MB in the beginning and 2.1GB in the end (delta: 2.1GB). Free memory was 28.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-09-01 02:33:10,098 INFO L158 Benchmark]: Witness Printer took 58.91ms. Allocated memory is still 2.1GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 02:33:10,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 60.8MB. Free memory was 38.1MB in the beginning and 38.1MB in the end (delta: 34.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.53ms. Allocated memory is still 73.4MB. Free memory was 50.1MB in the beginning and 38.7MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.06ms. Allocated memory is still 73.4MB. Free memory was 38.5MB in the beginning and 36.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.91ms. Allocated memory is still 73.4MB. Free memory was 36.3MB in the beginning and 34.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 635.87ms. Allocated memory is still 73.4MB. Free memory was 34.8MB in the beginning and 29.4MB in the end (delta: 5.4MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * TraceAbstraction took 35389.84ms. Allocated memory was 73.4MB in the beginning and 2.1GB in the end (delta: 2.1GB). Free memory was 28.4MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. * Witness Printer took 58.91ms. Allocated memory is still 2.1GB. Free memory was 1.1GB in the beginning and 1.1GB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 166 PlacesBefore, 64 PlacesAfterwards, 155 TransitionsBefore, 51 TransitionsAfterwards, 1702 CoEnabledTransitionPairs, 8 FixpointIterations, 90 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 143 TotalNumberOfCompositions, 9805 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3770, independent: 3504, independent conditional: 0, independent unconditional: 3504, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 819, independent: 786, independent conditional: 0, independent unconditional: 786, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3770, independent: 2718, independent conditional: 0, independent unconditional: 2718, dependent: 233, dependent conditional: 0, dependent unconditional: 233, unknown: 819, unknown conditional: 0, unknown unconditional: 819] , Statistics on independence cache: Total cache size (in pairs): 226, Positive cache size: 207, Positive conditional cache size: 0, Positive unconditional cache size: 207, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 146]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 120]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 195 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 35.3s, OverallIterations: 39, TraceHistogramMax: 1, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3483 SdHoareTripleChecker+Valid, 6.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2819 mSDsluCounter, 1115 SdHoareTripleChecker+Invalid, 4.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1021 mSDsCounter, 730 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12766 IncrementalHoareTripleChecker+Invalid, 13496 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 730 mSolverCounterUnsat, 94 mSDtfsCounter, 12766 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 383 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 329 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 463 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4977occurred in iteration=34, InterpolantAutomatonStates: 359, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 1069 NumberOfCodeBlocks, 1069 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1030 ConstructedInterpolants, 0 QuantifiedInterpolants, 4347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 39 InterpolantComputations, 39 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 02:33:10,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE