./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:11:08,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:11:08,475 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:11:08,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:11:08,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:11:08,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:11:08,506 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:11:08,509 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:11:08,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:11:08,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:11:08,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:11:08,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:11:08,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:11:08,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:11:08,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:11:08,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:11:08,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:11:08,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:11:08,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:11:08,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:11:08,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:11:08,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:11:08,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:11:08,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:11:08,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:11:08,561 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:11:08,561 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:11:08,562 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:11:08,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:11:08,565 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:11:08,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:11:08,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:11:08,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:11:08,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:11:08,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:11:08,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:11:08,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:11:08,575 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:11:08,575 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:11:08,576 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:11:08,577 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:11:08,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:11:08,614 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:11:08,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:11:08,616 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:11:08,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:11:08,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:11:08,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:11:08,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:11:08,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:11:08,618 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:11:08,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:11:08,619 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:11:08,620 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:11:08,620 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:11:08,620 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:11:08,620 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:11:08,620 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:11:08,621 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:11:08,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:11:08,622 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:11:08,622 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:11:08,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:11:08,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:11:08,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:11:08,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:11:08,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:11:08,623 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:11:08,623 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:11:08,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:11:08,624 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:11:08,624 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef808fc1470b7509ff56eb59d7d443a24f9bd367b94a6fd316176ae1cba1f1f6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:11:08,951 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:11:08,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:11:08,974 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:11:08,975 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:11:08,976 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:11:08,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-30 03:11:10,137 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:11:10,399 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:11:10,415 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i [2023-08-30 03:11:10,432 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20aabadb/f7c5b74b7dea4f9d9314848987b61433/FLAG75eef792a [2023-08-30 03:11:10,445 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a20aabadb/f7c5b74b7dea4f9d9314848987b61433 [2023-08-30 03:11:10,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:11:10,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:11:10,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:11:10,450 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:11:10,453 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:11:10,453 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:10,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34adbf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10, skipping insertion in model container [2023-08-30 03:11:10,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:10,461 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:11:10,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:11:10,629 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2023-08-30 03:11:10,892 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:11:10,905 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:11:10,917 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe016_rmo.oepc.i[993,1006] [2023-08-30 03:11:10,949 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:11:10,976 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:11:10,976 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 03:11:10,982 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:11:10,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10 WrapperNode [2023-08-30 03:11:10,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:11:10,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:11:10,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:11:10,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:11:10,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,019 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,052 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 188 [2023-08-30 03:11:11,053 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:11:11,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:11:11,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:11:11,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:11:11,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,102 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,111 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:11:11,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:11:11,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:11:11,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:11:11,115 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (1/1) ... [2023-08-30 03:11:11,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:11:11,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:11:11,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:11:11,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:11:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:11:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:11:11,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 03:11:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 03:11:11,189 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 03:11:11,189 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 03:11:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 03:11:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-30 03:11:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-30 03:11:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:11:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 03:11:11,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:11:11,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:11:11,192 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:11:11,402 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:11:11,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:11:12,002 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:11:12,741 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:11:12,742 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:11:12,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:11:12 BoogieIcfgContainer [2023-08-30 03:11:12,744 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:11:12,748 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:11:12,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:11:12,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:11:12,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:11:10" (1/3) ... [2023-08-30 03:11:12,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91ae42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:11:12, skipping insertion in model container [2023-08-30 03:11:12,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:11:10" (2/3) ... [2023-08-30 03:11:12,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a91ae42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:11:12, skipping insertion in model container [2023-08-30 03:11:12,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:11:12" (3/3) ... [2023-08-30 03:11:12,754 INFO L112 eAbstractionObserver]: Analyzing ICFG safe016_rmo.oepc.i [2023-08-30 03:11:12,770 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:11:12,771 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 52 error locations. [2023-08-30 03:11:12,771 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:11:12,925 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:11:12,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 412 flow [2023-08-30 03:11:13,048 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-30 03:11:13,049 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:11:13,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 291 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-30 03:11:13,054 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 412 flow [2023-08-30 03:11:13,060 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 192 transitions, 396 flow [2023-08-30 03:11:13,063 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:11:13,071 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-30 03:11:13,074 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 192 transitions, 396 flow [2023-08-30 03:11:13,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 396 flow [2023-08-30 03:11:13,127 INFO L130 PetriNetUnfolder]: 2/192 cut-off events. [2023-08-30 03:11:13,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:11:13,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 192 events. 2/192 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 294 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 133. Up to 2 conditions per place. [2023-08-30 03:11:13,143 INFO L119 LiptonReduction]: Number of co-enabled transitions 8020 [2023-08-30 03:11:38,170 INFO L134 LiptonReduction]: Checked pairs total: 39374 [2023-08-30 03:11:38,170 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-08-30 03:11:38,183 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:11:38,189 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;@1a7ab374, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:11:38,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 80 error locations. [2023-08-30 03:11:38,191 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 03:11:38,191 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:11:38,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:11:38,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:11:38,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:11:38,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:11:38,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1093, now seen corresponding path program 1 times [2023-08-30 03:11:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:11:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440893296] [2023-08-30 03:11:38,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:11:38,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:11:38,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:11:38,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:11:38,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:11:38,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440893296] [2023-08-30 03:11:38,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440893296] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:11:38,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:11:38,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:11:38,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408837070] [2023-08-30 03:11:38,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:11:38,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:11:38,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:11:38,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:11:38,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:11:38,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 353 [2023-08-30 03:11:38,444 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 84 transitions, 180 flow. Second operand has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:38,444 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:11:38,445 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 353 [2023-08-30 03:11:38,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:11:50,581 INFO L130 PetriNetUnfolder]: 69742/91810 cut-off events. [2023-08-30 03:11:50,582 INFO L131 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2023-08-30 03:11:50,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183861 conditions, 91810 events. 69742/91810 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 6115. Compared 600215 event pairs, 69742 based on Foata normal form. 0/47016 useless extension candidates. Maximal degree in co-relation 183849. Up to 91764 conditions per place. [2023-08-30 03:11:51,218 INFO L137 encePairwiseOnDemand]: 324/353 looper letters, 50 selfloop transitions, 0 changer transitions 0/54 dead transitions. [2023-08-30 03:11:51,219 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 54 transitions, 220 flow [2023-08-30 03:11:51,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:11:51,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:11:51,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 371 transitions. [2023-08-30 03:11:51,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5254957507082153 [2023-08-30 03:11:51,240 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 371 transitions. [2023-08-30 03:11:51,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 371 transitions. [2023-08-30 03:11:51,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:11:51,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 371 transitions. [2023-08-30 03:11:51,251 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:51,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:51,255 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 353.0) internal successors, (1059), 3 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:51,257 INFO L175 Difference]: Start difference. First operand has 96 places, 84 transitions, 180 flow. Second operand 2 states and 371 transitions. [2023-08-30 03:11:51,258 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 54 transitions, 220 flow [2023-08-30 03:11:51,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 54 transitions, 216 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:11:51,270 INFO L231 Difference]: Finished difference. Result has 64 places, 54 transitions, 116 flow [2023-08-30 03:11:51,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=54} [2023-08-30 03:11:51,276 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -32 predicate places. [2023-08-30 03:11:51,277 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 54 transitions, 116 flow [2023-08-30 03:11:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:51,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:11:51,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:11:51,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:11:51,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:11:51,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:11:51,290 INFO L85 PathProgramCache]: Analyzing trace with hash 1078472, now seen corresponding path program 1 times [2023-08-30 03:11:51,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:11:51,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189528521] [2023-08-30 03:11:51,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:11:51,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:11:51,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:11:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:11:51,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:11:51,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189528521] [2023-08-30 03:11:51,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189528521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:11:51,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:11:51,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:11:51,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955716438] [2023-08-30 03:11:51,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:11:51,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:11:51,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:11:51,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:11:51,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:11:51,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 353 [2023-08-30 03:11:51,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 54 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:51,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:11:51,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 353 [2023-08-30 03:11:51,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:11:58,677 INFO L130 PetriNetUnfolder]: 56869/77314 cut-off events. [2023-08-30 03:11:58,677 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:11:58,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154444 conditions, 77314 events. 56869/77314 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3450. Compared 495237 event pairs, 34094 based on Foata normal form. 0/49293 useless extension candidates. Maximal degree in co-relation 154441. Up to 45237 conditions per place. [2023-08-30 03:11:59,129 INFO L137 encePairwiseOnDemand]: 332/353 looper letters, 59 selfloop transitions, 11 changer transitions 0/72 dead transitions. [2023-08-30 03:11:59,130 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 72 transitions, 292 flow [2023-08-30 03:11:59,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:11:59,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:11:59,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 03:11:59,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-30 03:11:59,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 03:11:59,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 03:11:59,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:11:59,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 03:11:59,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:59,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:59,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:59,140 INFO L175 Difference]: Start difference. First operand has 64 places, 54 transitions, 116 flow. Second operand 3 states and 491 transitions. [2023-08-30 03:11:59,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 72 transitions, 292 flow [2023-08-30 03:11:59,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 72 transitions, 292 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:11:59,142 INFO L231 Difference]: Finished difference. Result has 65 places, 60 transitions, 204 flow [2023-08-30 03:11:59,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=204, PETRI_PLACES=65, PETRI_TRANSITIONS=60} [2023-08-30 03:11:59,144 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -31 predicate places. [2023-08-30 03:11:59,144 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 60 transitions, 204 flow [2023-08-30 03:11:59,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:59,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:11:59,145 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:11:59,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:11:59,145 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:11:59,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:11:59,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1078473, now seen corresponding path program 1 times [2023-08-30 03:11:59,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:11:59,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22540549] [2023-08-30 03:11:59,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:11:59,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:11:59,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:11:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:11:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:11:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22540549] [2023-08-30 03:11:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22540549] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:11:59,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:11:59,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:11:59,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418457379] [2023-08-30 03:11:59,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:11:59,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:11:59,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:11:59,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:11:59,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:11:59,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-30 03:11:59,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 60 transitions, 204 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:11:59,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:11:59,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-30 03:11:59,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:02,424 INFO L130 PetriNetUnfolder]: 18651/26495 cut-off events. [2023-08-30 03:12:02,425 INFO L131 PetriNetUnfolder]: For 7466/7643 co-relation queries the response was YES. [2023-08-30 03:12:02,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71790 conditions, 26495 events. 18651/26495 cut-off events. For 7466/7643 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 167836 event pairs, 14370 based on Foata normal form. 6147/29746 useless extension candidates. Maximal degree in co-relation 71785. Up to 25102 conditions per place. [2023-08-30 03:12:02,607 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 45 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-30 03:12:02,608 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 276 flow [2023-08-30 03:12:02,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:02,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:02,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 03:12:02,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-30 03:12:02,610 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 03:12:02,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 03:12:02,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:02,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 03:12:02,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:02,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:02,615 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:02,615 INFO L175 Difference]: Start difference. First operand has 65 places, 60 transitions, 204 flow. Second operand 3 states and 477 transitions. [2023-08-30 03:12:02,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 276 flow [2023-08-30 03:12:02,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 254 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:12:02,680 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 164 flow [2023-08-30 03:12:02,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-30 03:12:02,682 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -41 predicate places. [2023-08-30 03:12:02,684 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 164 flow [2023-08-30 03:12:02,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:02,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:02,686 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:02,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:12:02,686 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:02,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:02,687 INFO L85 PathProgramCache]: Analyzing trace with hash 936182227, now seen corresponding path program 1 times [2023-08-30 03:12:02,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:02,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875944846] [2023-08-30 03:12:02,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:02,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:02,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:02,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:02,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:02,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875944846] [2023-08-30 03:12:02,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875944846] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:02,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:02,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:12:02,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125301706] [2023-08-30 03:12:02,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:12:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:12:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:12:02,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 353 [2023-08-30 03:12:02,934 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:02,934 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:02,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 353 [2023-08-30 03:12:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:05,700 INFO L130 PetriNetUnfolder]: 18282/26770 cut-off events. [2023-08-30 03:12:05,700 INFO L131 PetriNetUnfolder]: For 2915/3080 co-relation queries the response was YES. [2023-08-30 03:12:05,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66152 conditions, 26770 events. 18282/26770 cut-off events. For 2915/3080 co-relation queries the response was YES. Maximal size of possible extension queue 1459. Compared 180713 event pairs, 7361 based on Foata normal form. 0/21403 useless extension candidates. Maximal degree in co-relation 66147. Up to 15275 conditions per place. [2023-08-30 03:12:05,847 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 81 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-30 03:12:05,848 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 88 transitions, 454 flow [2023-08-30 03:12:05,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:05,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:05,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-30 03:12:05,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47780925401322 [2023-08-30 03:12:05,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-30 03:12:05,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-30 03:12:05,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:05,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-30 03:12:05,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:05,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:05,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:05,860 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 164 flow. Second operand 3 states and 506 transitions. [2023-08-30 03:12:05,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 88 transitions, 454 flow [2023-08-30 03:12:05,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 88 transitions, 453 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:05,864 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 176 flow [2023-08-30 03:12:05,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-30 03:12:05,866 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -39 predicate places. [2023-08-30 03:12:05,866 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 176 flow [2023-08-30 03:12:05,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:05,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:05,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:05,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:12:05,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:05,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:05,867 INFO L85 PathProgramCache]: Analyzing trace with hash 936182570, now seen corresponding path program 1 times [2023-08-30 03:12:05,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:05,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211828340] [2023-08-30 03:12:05,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:05,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:06,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211828340] [2023-08-30 03:12:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211828340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:06,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:06,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:12:06,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560220168] [2023-08-30 03:12:06,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:06,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:12:06,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:06,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:12:06,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:12:06,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-30 03:12:06,234 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 176 flow. Second operand has 3 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) [2023-08-30 03:12:06,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:06,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-30 03:12:06,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:09,095 INFO L130 PetriNetUnfolder]: 24605/34041 cut-off events. [2023-08-30 03:12:09,095 INFO L131 PetriNetUnfolder]: For 11065/11417 co-relation queries the response was YES. [2023-08-30 03:12:09,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89300 conditions, 34041 events. 24605/34041 cut-off events. For 11065/11417 co-relation queries the response was YES. Maximal size of possible extension queue 1613. Compared 212887 event pairs, 8369 based on Foata normal form. 50/28373 useless extension candidates. Maximal degree in co-relation 89294. Up to 30725 conditions per place. [2023-08-30 03:12:09,334 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/89 dead transitions. [2023-08-30 03:12:09,334 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 89 transitions, 484 flow [2023-08-30 03:12:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:09,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:09,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 503 transitions. [2023-08-30 03:12:09,337 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4749763928234183 [2023-08-30 03:12:09,337 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 503 transitions. [2023-08-30 03:12:09,337 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 503 transitions. [2023-08-30 03:12:09,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:09,338 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 503 transitions. [2023-08-30 03:12:09,339 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.66666666666666) internal successors, (503), 3 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:09,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:09,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:09,342 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 176 flow. Second operand 3 states and 503 transitions. [2023-08-30 03:12:09,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 89 transitions, 484 flow [2023-08-30 03:12:09,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:12:09,349 INFO L231 Difference]: Finished difference. Result has 58 places, 53 transitions, 202 flow [2023-08-30 03:12:09,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=58, PETRI_TRANSITIONS=53} [2023-08-30 03:12:09,351 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -38 predicate places. [2023-08-30 03:12:09,352 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 53 transitions, 202 flow [2023-08-30 03:12:09,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-30 03:12:09,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:09,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:09,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:12:09,353 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:09,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:09,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112349, now seen corresponding path program 1 times [2023-08-30 03:12:09,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:09,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514928023] [2023-08-30 03:12:09,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:09,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:09,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:09,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:09,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514928023] [2023-08-30 03:12:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514928023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:12:09,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122063890] [2023-08-30 03:12:09,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:09,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:12:09,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:12:09,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:12:09,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 353 [2023-08-30 03:12:09,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 53 transitions, 202 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:09,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:09,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 353 [2023-08-30 03:12:09,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:12,528 INFO L130 PetriNetUnfolder]: 24461/33826 cut-off events. [2023-08-30 03:12:12,528 INFO L131 PetriNetUnfolder]: For 15431/16060 co-relation queries the response was YES. [2023-08-30 03:12:12,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93911 conditions, 33826 events. 24461/33826 cut-off events. For 15431/16060 co-relation queries the response was YES. Maximal size of possible extension queue 1689. Compared 217195 event pairs, 3816 based on Foata normal form. 286/28742 useless extension candidates. Maximal degree in co-relation 93904. Up to 29097 conditions per place. [2023-08-30 03:12:12,764 INFO L137 encePairwiseOnDemand]: 349/353 looper letters, 86 selfloop transitions, 4 changer transitions 0/93 dead transitions. [2023-08-30 03:12:12,764 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 93 transitions, 516 flow [2023-08-30 03:12:12,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:12,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:12,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-30 03:12:12,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721435316336166 [2023-08-30 03:12:12,767 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-30 03:12:12,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-30 03:12:12,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:12,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-30 03:12:12,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:12,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:12,771 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:12,772 INFO L175 Difference]: Start difference. First operand has 58 places, 53 transitions, 202 flow. Second operand 3 states and 500 transitions. [2023-08-30 03:12:12,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 93 transitions, 516 flow [2023-08-30 03:12:12,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 93 transitions, 512 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:12,780 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 222 flow [2023-08-30 03:12:12,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-30 03:12:12,784 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-30 03:12:12,784 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 222 flow [2023-08-30 03:12:12,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:12,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:12,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:12,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:12:12,785 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:12,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:12,787 INFO L85 PathProgramCache]: Analyzing trace with hash -723225260, now seen corresponding path program 1 times [2023-08-30 03:12:12,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:12,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581382620] [2023-08-30 03:12:12,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:12,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:12,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:12,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:12,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581382620] [2023-08-30 03:12:12,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581382620] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:12,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:12,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:12:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307776385] [2023-08-30 03:12:12,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:12,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:12:12,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:12,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:12:12,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:12:12,991 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 353 [2023-08-30 03:12:12,993 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:12,993 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:12,994 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 353 [2023-08-30 03:12:12,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:15,728 INFO L130 PetriNetUnfolder]: 21552/30562 cut-off events. [2023-08-30 03:12:15,729 INFO L131 PetriNetUnfolder]: For 14892/15135 co-relation queries the response was YES. [2023-08-30 03:12:15,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88679 conditions, 30562 events. 21552/30562 cut-off events. For 14892/15135 co-relation queries the response was YES. Maximal size of possible extension queue 1544. Compared 195244 event pairs, 10261 based on Foata normal form. 0/25619 useless extension candidates. Maximal degree in co-relation 88671. Up to 19323 conditions per place. [2023-08-30 03:12:16,004 INFO L137 encePairwiseOnDemand]: 351/353 looper letters, 82 selfloop transitions, 4 changer transitions 0/91 dead transitions. [2023-08-30 03:12:16,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 91 transitions, 514 flow [2023-08-30 03:12:16,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:16,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:16,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-30 03:12:16,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45042492917847027 [2023-08-30 03:12:16,006 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-30 03:12:16,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-30 03:12:16,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:16,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-30 03:12:16,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:16,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:16,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:16,010 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 222 flow. Second operand 3 states and 477 transitions. [2023-08-30 03:12:16,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 91 transitions, 514 flow [2023-08-30 03:12:16,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 91 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:16,026 INFO L231 Difference]: Finished difference. Result has 60 places, 54 transitions, 222 flow [2023-08-30 03:12:16,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=60, PETRI_TRANSITIONS=54} [2023-08-30 03:12:16,026 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -36 predicate places. [2023-08-30 03:12:16,027 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 54 transitions, 222 flow [2023-08-30 03:12:16,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:16,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:16,027 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:16,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:12:16,028 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:16,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1043112691, now seen corresponding path program 1 times [2023-08-30 03:12:16,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:16,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356214302] [2023-08-30 03:12:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:16,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:16,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:16,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:16,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:16,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356214302] [2023-08-30 03:12:16,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356214302] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:16,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:16,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:12:16,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939028313] [2023-08-30 03:12:16,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:16,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:12:16,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:16,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:12:16,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:12:16,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 353 [2023-08-30 03:12:16,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 54 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:16,320 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:16,320 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 353 [2023-08-30 03:12:16,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:20,289 INFO L130 PetriNetUnfolder]: 32190/45776 cut-off events. [2023-08-30 03:12:20,289 INFO L131 PetriNetUnfolder]: For 25041/25396 co-relation queries the response was YES. [2023-08-30 03:12:20,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129385 conditions, 45776 events. 32190/45776 cut-off events. For 25041/25396 co-relation queries the response was YES. Maximal size of possible extension queue 2388. Compared 308627 event pairs, 16897 based on Foata normal form. 155/38340 useless extension candidates. Maximal degree in co-relation 129377. Up to 24319 conditions per place. [2023-08-30 03:12:20,705 INFO L137 encePairwiseOnDemand]: 347/353 looper letters, 81 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2023-08-30 03:12:20,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 94 transitions, 538 flow [2023-08-30 03:12:20,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:12:20,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:12:20,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions. [2023-08-30 03:12:20,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4405099150141643 [2023-08-30 03:12:20,711 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions. [2023-08-30 03:12:20,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions. [2023-08-30 03:12:20,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:20,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions. [2023-08-30 03:12:20,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:20,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:20,718 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:20,718 INFO L175 Difference]: Start difference. First operand has 60 places, 54 transitions, 222 flow. Second operand 4 states and 622 transitions. [2023-08-30 03:12:20,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 94 transitions, 538 flow [2023-08-30 03:12:20,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 94 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:20,740 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 255 flow [2023-08-30 03:12:20,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-30 03:12:20,741 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -33 predicate places. [2023-08-30 03:12:20,741 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 255 flow [2023-08-30 03:12:20,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 141.75) internal successors, (567), 4 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:20,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:20,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:20,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:12:20,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:20,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:20,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1561724005, now seen corresponding path program 2 times [2023-08-30 03:12:20,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:20,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823038297] [2023-08-30 03:12:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:20,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:21,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:21,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:21,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823038297] [2023-08-30 03:12:21,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823038297] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:21,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:21,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:12:21,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107499233] [2023-08-30 03:12:21,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:21,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:12:21,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:21,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:12:21,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:12:21,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 353 [2023-08-30 03:12:21,140 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:21,140 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:21,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 353 [2023-08-30 03:12:21,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:25,404 INFO L130 PetriNetUnfolder]: 31870/45329 cut-off events. [2023-08-30 03:12:25,405 INFO L131 PetriNetUnfolder]: For 30730/31073 co-relation queries the response was YES. [2023-08-30 03:12:25,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 130063 conditions, 45329 events. 31870/45329 cut-off events. For 30730/31073 co-relation queries the response was YES. Maximal size of possible extension queue 2371. Compared 305503 event pairs, 17217 based on Foata normal form. 156/37909 useless extension candidates. Maximal degree in co-relation 130054. Up to 33358 conditions per place. [2023-08-30 03:12:25,762 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 82 selfloop transitions, 5 changer transitions 0/92 dead transitions. [2023-08-30 03:12:25,762 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 92 transitions, 549 flow [2023-08-30 03:12:25,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:12:25,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:12:25,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-30 03:12:25,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44192634560906513 [2023-08-30 03:12:25,765 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-30 03:12:25,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-30 03:12:25,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:25,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-30 03:12:25,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:25,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:25,769 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:25,769 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 255 flow. Second operand 4 states and 624 transitions. [2023-08-30 03:12:25,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 92 transitions, 549 flow [2023-08-30 03:12:25,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 92 transitions, 535 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:12:25,794 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 245 flow [2023-08-30 03:12:25,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=245, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-08-30 03:12:25,794 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -34 predicate places. [2023-08-30 03:12:25,795 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 245 flow [2023-08-30 03:12:25,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:25,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:25,795 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:25,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:12:25,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:25,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:25,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1832137713, now seen corresponding path program 1 times [2023-08-30 03:12:25,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:25,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790988068] [2023-08-30 03:12:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:25,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:25,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:27,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:27,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:27,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790988068] [2023-08-30 03:12:27,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790988068] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:27,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:27,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 03:12:27,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491082253] [2023-08-30 03:12:27,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:27,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 03:12:27,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 03:12:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-30 03:12:27,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-30 03:12:27,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 245 flow. Second operand has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:27,767 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:27,767 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-30 03:12:27,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:31,774 INFO L130 PetriNetUnfolder]: 32615/45872 cut-off events. [2023-08-30 03:12:31,774 INFO L131 PetriNetUnfolder]: For 29268/29268 co-relation queries the response was YES. [2023-08-30 03:12:31,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 133577 conditions, 45872 events. 32615/45872 cut-off events. For 29268/29268 co-relation queries the response was YES. Maximal size of possible extension queue 2338. Compared 297074 event pairs, 19960 based on Foata normal form. 2/38739 useless extension candidates. Maximal degree in co-relation 133569. Up to 45266 conditions per place. [2023-08-30 03:12:32,349 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 77 selfloop transitions, 25 changer transitions 0/104 dead transitions. [2023-08-30 03:12:32,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 104 transitions, 698 flow [2023-08-30 03:12:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:12:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:12:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions. [2023-08-30 03:12:32,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3693342776203966 [2023-08-30 03:12:32,352 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions. [2023-08-30 03:12:32,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions. [2023-08-30 03:12:32,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:32,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions. [2023-08-30 03:12:32,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:32,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:32,360 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:32,360 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 245 flow. Second operand 8 states and 1043 transitions. [2023-08-30 03:12:32,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 104 transitions, 698 flow [2023-08-30 03:12:32,373 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 104 transitions, 681 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:12:32,375 INFO L231 Difference]: Finished difference. Result has 71 places, 79 transitions, 487 flow [2023-08-30 03:12:32,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=487, PETRI_PLACES=71, PETRI_TRANSITIONS=79} [2023-08-30 03:12:32,375 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -25 predicate places. [2023-08-30 03:12:32,376 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 79 transitions, 487 flow [2023-08-30 03:12:32,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 121.875) internal successors, (975), 8 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:32,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:32,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:32,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:12:32,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:32,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:32,377 INFO L85 PathProgramCache]: Analyzing trace with hash 997504222, now seen corresponding path program 1 times [2023-08-30 03:12:32,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884548666] [2023-08-30 03:12:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:32,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:32,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884548666] [2023-08-30 03:12:32,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884548666] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:32,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:32,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:12:32,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540696619] [2023-08-30 03:12:32,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:32,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:12:32,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:32,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:12:32,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:12:32,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 353 [2023-08-30 03:12:32,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 79 transitions, 487 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:32,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:32,573 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 353 [2023-08-30 03:12:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:38,820 INFO L130 PetriNetUnfolder]: 46346/65257 cut-off events. [2023-08-30 03:12:38,820 INFO L131 PetriNetUnfolder]: For 49271/49910 co-relation queries the response was YES. [2023-08-30 03:12:39,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 194562 conditions, 65257 events. 46346/65257 cut-off events. For 49271/49910 co-relation queries the response was YES. Maximal size of possible extension queue 3130. Compared 453336 event pairs, 17696 based on Foata normal form. 334/56158 useless extension candidates. Maximal degree in co-relation 194550. Up to 38251 conditions per place. [2023-08-30 03:12:39,292 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 112 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-30 03:12:39,292 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 118 transitions, 867 flow [2023-08-30 03:12:39,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:12:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:12:39,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 498 transitions. [2023-08-30 03:12:39,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702549575070821 [2023-08-30 03:12:39,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 498 transitions. [2023-08-30 03:12:39,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 498 transitions. [2023-08-30 03:12:39,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:39,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 498 transitions. [2023-08-30 03:12:39,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:39,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:39,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:39,297 INFO L175 Difference]: Start difference. First operand has 71 places, 79 transitions, 487 flow. Second operand 3 states and 498 transitions. [2023-08-30 03:12:39,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 118 transitions, 867 flow [2023-08-30 03:12:39,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 118 transitions, 845 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-30 03:12:39,583 INFO L231 Difference]: Finished difference. Result has 74 places, 79 transitions, 476 flow [2023-08-30 03:12:39,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=465, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=74, PETRI_TRANSITIONS=79} [2023-08-30 03:12:39,584 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -22 predicate places. [2023-08-30 03:12:39,584 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 79 transitions, 476 flow [2023-08-30 03:12:39,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:39,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:39,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:39,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:12:39,585 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:39,585 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:39,585 INFO L85 PathProgramCache]: Analyzing trace with hash -785422482, now seen corresponding path program 1 times [2023-08-30 03:12:39,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:39,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530702267] [2023-08-30 03:12:39,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:39,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:41,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:41,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530702267] [2023-08-30 03:12:41,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530702267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:41,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:41,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:12:41,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614598711] [2023-08-30 03:12:41,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:41,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:12:41,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:12:41,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:12:41,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 353 [2023-08-30 03:12:41,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 79 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:41,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:41,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 353 [2023-08-30 03:12:41,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:46,773 INFO L130 PetriNetUnfolder]: 39386/55649 cut-off events. [2023-08-30 03:12:46,773 INFO L131 PetriNetUnfolder]: For 46679/46802 co-relation queries the response was YES. [2023-08-30 03:12:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173139 conditions, 55649 events. 39386/55649 cut-off events. For 46679/46802 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 381358 event pairs, 23514 based on Foata normal form. 47/48271 useless extension candidates. Maximal degree in co-relation 173125. Up to 54678 conditions per place. [2023-08-30 03:12:47,181 INFO L137 encePairwiseOnDemand]: 341/353 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2023-08-30 03:12:47,181 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 126 transitions, 932 flow [2023-08-30 03:12:47,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 03:12:47,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 03:12:47,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1136 transitions. [2023-08-30 03:12:47,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.357570034623859 [2023-08-30 03:12:47,184 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1136 transitions. [2023-08-30 03:12:47,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1136 transitions. [2023-08-30 03:12:47,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:47,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1136 transitions. [2023-08-30 03:12:47,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 126.22222222222223) internal successors, (1136), 9 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:47,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:47,195 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 353.0) internal successors, (3530), 10 states have internal predecessors, (3530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:47,195 INFO L175 Difference]: Start difference. First operand has 74 places, 79 transitions, 476 flow. Second operand 9 states and 1136 transitions. [2023-08-30 03:12:47,195 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 126 transitions, 932 flow [2023-08-30 03:12:47,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 126 transitions, 900 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:47,510 INFO L231 Difference]: Finished difference. Result has 85 places, 93 transitions, 614 flow [2023-08-30 03:12:47,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=614, PETRI_PLACES=85, PETRI_TRANSITIONS=93} [2023-08-30 03:12:47,511 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, -11 predicate places. [2023-08-30 03:12:47,511 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 93 transitions, 614 flow [2023-08-30 03:12:47,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.77777777777777) internal successors, (1069), 9 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:47,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:47,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:47,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:12:47,512 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:47,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:47,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1197653368, now seen corresponding path program 2 times [2023-08-30 03:12:47,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:47,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204350664] [2023-08-30 03:12:47,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:47,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:47,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:49,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:49,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:49,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204350664] [2023-08-30 03:12:49,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204350664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:49,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:49,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:12:49,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575710090] [2023-08-30 03:12:49,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:49,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:12:49,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:49,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:12:49,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:12:49,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 353 [2023-08-30 03:12:49,755 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 93 transitions, 614 flow. Second operand has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:49,755 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:49,755 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 353 [2023-08-30 03:12:49,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:12:55,849 INFO L130 PetriNetUnfolder]: 39464/55768 cut-off events. [2023-08-30 03:12:55,849 INFO L131 PetriNetUnfolder]: For 45447/45564 co-relation queries the response was YES. [2023-08-30 03:12:56,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174484 conditions, 55768 events. 39464/55768 cut-off events. For 45447/45564 co-relation queries the response was YES. Maximal size of possible extension queue 3020. Compared 380641 event pairs, 16478 based on Foata normal form. 81/48425 useless extension candidates. Maximal degree in co-relation 174466. Up to 53324 conditions per place. [2023-08-30 03:12:56,310 INFO L137 encePairwiseOnDemand]: 339/353 looper letters, 114 selfloop transitions, 66 changer transitions 0/182 dead transitions. [2023-08-30 03:12:56,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 182 transitions, 1412 flow [2023-08-30 03:12:56,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:12:56,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:12:56,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1552 transitions. [2023-08-30 03:12:56,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3663833805476865 [2023-08-30 03:12:56,314 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1552 transitions. [2023-08-30 03:12:56,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1552 transitions. [2023-08-30 03:12:56,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:12:56,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1552 transitions. [2023-08-30 03:12:56,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.33333333333334) internal successors, (1552), 12 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:56,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:56,325 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:56,325 INFO L175 Difference]: Start difference. First operand has 85 places, 93 transitions, 614 flow. Second operand 12 states and 1552 transitions. [2023-08-30 03:12:56,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 182 transitions, 1412 flow [2023-08-30 03:12:56,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 182 transitions, 1373 flow, removed 17 selfloop flow, removed 1 redundant places. [2023-08-30 03:12:56,897 INFO L231 Difference]: Finished difference. Result has 102 places, 127 transitions, 1049 flow [2023-08-30 03:12:56,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=579, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1049, PETRI_PLACES=102, PETRI_TRANSITIONS=127} [2023-08-30 03:12:56,898 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 6 predicate places. [2023-08-30 03:12:56,899 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 127 transitions, 1049 flow [2023-08-30 03:12:56,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 121.6) internal successors, (1216), 10 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:56,899 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:12:56,899 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:12:56,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:12:56,900 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:12:56,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:12:56,900 INFO L85 PathProgramCache]: Analyzing trace with hash -786790497, now seen corresponding path program 1 times [2023-08-30 03:12:56,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:12:56,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425410356] [2023-08-30 03:12:56,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:12:56,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:12:56,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:12:58,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:12:58,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:12:58,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425410356] [2023-08-30 03:12:58,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425410356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:12:58,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:12:58,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 03:12:58,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950768897] [2023-08-30 03:12:58,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:12:58,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 03:12:58,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:12:58,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 03:12:58,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2023-08-30 03:12:58,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-30 03:12:58,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 127 transitions, 1049 flow. Second operand has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:12:58,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:12:58,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-30 03:12:58,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:13:04,506 INFO L130 PetriNetUnfolder]: 39457/55772 cut-off events. [2023-08-30 03:13:04,506 INFO L131 PetriNetUnfolder]: For 73335/73446 co-relation queries the response was YES. [2023-08-30 03:13:04,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193526 conditions, 55772 events. 39457/55772 cut-off events. For 73335/73446 co-relation queries the response was YES. Maximal size of possible extension queue 3019. Compared 382759 event pairs, 22911 based on Foata normal form. 39/48386 useless extension candidates. Maximal degree in co-relation 193501. Up to 54601 conditions per place. [2023-08-30 03:13:05,050 INFO L137 encePairwiseOnDemand]: 342/353 looper letters, 127 selfloop transitions, 44 changer transitions 0/173 dead transitions. [2023-08-30 03:13:05,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 173 transitions, 1687 flow [2023-08-30 03:13:05,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 03:13:05,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 03:13:05,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1057 transitions. [2023-08-30 03:13:05,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742917847025496 [2023-08-30 03:13:05,053 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1057 transitions. [2023-08-30 03:13:05,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1057 transitions. [2023-08-30 03:13:05,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:13:05,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1057 transitions. [2023-08-30 03:13:05,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.125) internal successors, (1057), 8 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:05,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:05,237 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 353.0) internal successors, (3177), 9 states have internal predecessors, (3177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:05,237 INFO L175 Difference]: Start difference. First operand has 102 places, 127 transitions, 1049 flow. Second operand 8 states and 1057 transitions. [2023-08-30 03:13:05,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 173 transitions, 1687 flow [2023-08-30 03:13:07,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 173 transitions, 1627 flow, removed 26 selfloop flow, removed 2 redundant places. [2023-08-30 03:13:07,873 INFO L231 Difference]: Finished difference. Result has 110 places, 146 transitions, 1320 flow [2023-08-30 03:13:07,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=997, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1320, PETRI_PLACES=110, PETRI_TRANSITIONS=146} [2023-08-30 03:13:07,874 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 14 predicate places. [2023-08-30 03:13:07,874 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 146 transitions, 1320 flow [2023-08-30 03:13:07,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 122.77777777777777) internal successors, (1105), 9 states have internal predecessors, (1105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:07,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:13:07,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:13:07,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:13:07,875 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:13:07,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:13:07,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1615535047, now seen corresponding path program 1 times [2023-08-30 03:13:07,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:13:07,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955705450] [2023-08-30 03:13:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:13:07,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:13:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:13:08,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:13:08,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:13:08,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955705450] [2023-08-30 03:13:08,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955705450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:13:08,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:13:08,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:13:08,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671930932] [2023-08-30 03:13:08,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:13:08,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:13:08,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:13:08,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:13:08,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:13:08,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 353 [2023-08-30 03:13:08,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 146 transitions, 1320 flow. Second operand has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:08,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:13:08,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 353 [2023-08-30 03:13:08,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:13:14,459 INFO L130 PetriNetUnfolder]: 38129/54448 cut-off events. [2023-08-30 03:13:14,459 INFO L131 PetriNetUnfolder]: For 86485/86608 co-relation queries the response was YES. [2023-08-30 03:13:14,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193345 conditions, 54448 events. 38129/54448 cut-off events. For 86485/86608 co-relation queries the response was YES. Maximal size of possible extension queue 3015. Compared 379737 event pairs, 13159 based on Foata normal form. 79/47998 useless extension candidates. Maximal degree in co-relation 193316. Up to 45015 conditions per place. [2023-08-30 03:13:15,079 INFO L137 encePairwiseOnDemand]: 350/353 looper letters, 147 selfloop transitions, 20 changer transitions 0/176 dead transitions. [2023-08-30 03:13:15,079 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 1844 flow [2023-08-30 03:13:15,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:13:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:13:15,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2023-08-30 03:13:15,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636449480642115 [2023-08-30 03:13:15,082 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2023-08-30 03:13:15,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2023-08-30 03:13:15,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:13:15,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2023-08-30 03:13:15,083 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:15,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:15,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 353.0) internal successors, (1412), 4 states have internal predecessors, (1412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:15,084 INFO L175 Difference]: Start difference. First operand has 110 places, 146 transitions, 1320 flow. Second operand 3 states and 491 transitions. [2023-08-30 03:13:15,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 1844 flow [2023-08-30 03:13:17,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 176 transitions, 1812 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-08-30 03:13:17,826 INFO L231 Difference]: Finished difference. Result has 111 places, 146 transitions, 1350 flow [2023-08-30 03:13:17,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1288, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1350, PETRI_PLACES=111, PETRI_TRANSITIONS=146} [2023-08-30 03:13:17,827 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 15 predicate places. [2023-08-30 03:13:17,827 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 146 transitions, 1350 flow [2023-08-30 03:13:17,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:17,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:13:17,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:13:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 03:13:17,828 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting P3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:13:17,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:13:17,828 INFO L85 PathProgramCache]: Analyzing trace with hash 2023297229, now seen corresponding path program 1 times [2023-08-30 03:13:17,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:13:17,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676517848] [2023-08-30 03:13:17,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:13:17,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:13:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:13:17,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:13:17,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:13:17,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676517848] [2023-08-30 03:13:17,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676517848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:13:17,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:13:17,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:13:17,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927295932] [2023-08-30 03:13:17,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:13:17,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:13:17,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:13:17,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:13:17,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:13:18,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 353 [2023-08-30 03:13:18,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 146 transitions, 1350 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:18,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:13:18,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 353 [2023-08-30 03:13:18,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:13:23,542 INFO L130 PetriNetUnfolder]: 34842/49287 cut-off events. [2023-08-30 03:13:23,542 INFO L131 PetriNetUnfolder]: For 90942/91038 co-relation queries the response was YES. [2023-08-30 03:13:23,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181866 conditions, 49287 events. 34842/49287 cut-off events. For 90942/91038 co-relation queries the response was YES. Maximal size of possible extension queue 2750. Compared 330374 event pairs, 9985 based on Foata normal form. 309/43859 useless extension candidates. Maximal degree in co-relation 181835. Up to 22989 conditions per place. [2023-08-30 03:13:24,271 INFO L137 encePairwiseOnDemand]: 335/353 looper letters, 136 selfloop transitions, 42 changer transitions 0/180 dead transitions. [2023-08-30 03:13:24,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 180 transitions, 1942 flow [2023-08-30 03:13:24,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 03:13:24,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 03:13:24,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-08-30 03:13:24,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263456090651558 [2023-08-30 03:13:24,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-08-30 03:13:24,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-08-30 03:13:24,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:13:24,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-08-30 03:13:24,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:24,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:24,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 353.0) internal successors, (1765), 5 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:24,278 INFO L175 Difference]: Start difference. First operand has 111 places, 146 transitions, 1350 flow. Second operand 4 states and 602 transitions. [2023-08-30 03:13:24,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 180 transitions, 1942 flow [2023-08-30 03:13:26,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 180 transitions, 1892 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:13:26,908 INFO L231 Difference]: Finished difference. Result has 114 places, 156 transitions, 1604 flow [2023-08-30 03:13:26,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1308, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1604, PETRI_PLACES=114, PETRI_TRANSITIONS=156} [2023-08-30 03:13:26,909 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 18 predicate places. [2023-08-30 03:13:26,909 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 156 transitions, 1604 flow [2023-08-30 03:13:26,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:26,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:13:26,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:13:26,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 03:13:26,910 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:13:26,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:13:26,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1938774266, now seen corresponding path program 1 times [2023-08-30 03:13:26,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:13:26,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22727271] [2023-08-30 03:13:26,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:13:26,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:13:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:13:28,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:13:28,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:13:28,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22727271] [2023-08-30 03:13:28,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22727271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:13:28,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:13:28,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:13:28,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363103153] [2023-08-30 03:13:28,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:13:28,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:13:28,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:13:28,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:13:28,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:13:28,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-30 03:13:28,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 156 transitions, 1604 flow. Second operand has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:28,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:13:28,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-30 03:13:28,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:13:34,789 INFO L130 PetriNetUnfolder]: 35958/50777 cut-off events. [2023-08-30 03:13:34,789 INFO L131 PetriNetUnfolder]: For 128772/128871 co-relation queries the response was YES. [2023-08-30 03:13:35,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209581 conditions, 50777 events. 35958/50777 cut-off events. For 128772/128871 co-relation queries the response was YES. Maximal size of possible extension queue 2771. Compared 342051 event pairs, 14348 based on Foata normal form. 39/46584 useless extension candidates. Maximal degree in co-relation 209549. Up to 48493 conditions per place. [2023-08-30 03:13:35,357 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 180 selfloop transitions, 44 changer transitions 0/226 dead transitions. [2023-08-30 03:13:35,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 226 transitions, 2530 flow [2023-08-30 03:13:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 03:13:35,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 03:13:35,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1429 transitions. [2023-08-30 03:13:35,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36801442183878447 [2023-08-30 03:13:35,360 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1429 transitions. [2023-08-30 03:13:35,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1429 transitions. [2023-08-30 03:13:35,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:13:35,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1429 transitions. [2023-08-30 03:13:35,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 129.9090909090909) internal successors, (1429), 11 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:35,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:35,367 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 353.0) internal successors, (4236), 12 states have internal predecessors, (4236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:35,367 INFO L175 Difference]: Start difference. First operand has 114 places, 156 transitions, 1604 flow. Second operand 11 states and 1429 transitions. [2023-08-30 03:13:35,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 226 transitions, 2530 flow [2023-08-30 03:13:37,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 226 transitions, 2522 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:13:37,923 INFO L231 Difference]: Finished difference. Result has 129 places, 182 transitions, 2061 flow [2023-08-30 03:13:37,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1598, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2061, PETRI_PLACES=129, PETRI_TRANSITIONS=182} [2023-08-30 03:13:37,924 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 33 predicate places. [2023-08-30 03:13:37,924 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 182 transitions, 2061 flow [2023-08-30 03:13:37,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:37,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:13:37,925 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:13:37,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 03:13:37,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:13:37,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:13:37,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1686338732, now seen corresponding path program 2 times [2023-08-30 03:13:37,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:13:37,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211143681] [2023-08-30 03:13:37,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:13:37,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:13:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:13:39,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:13:39,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:13:39,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211143681] [2023-08-30 03:13:39,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211143681] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:13:39,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:13:39,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-30 03:13:39,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278804169] [2023-08-30 03:13:39,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:13:39,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 03:13:39,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:13:39,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 03:13:39,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-30 03:13:39,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 353 [2023-08-30 03:13:39,476 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 182 transitions, 2061 flow. Second operand has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:39,476 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:13:39,476 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 353 [2023-08-30 03:13:39,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:13:46,125 INFO L130 PetriNetUnfolder]: 35936/50804 cut-off events. [2023-08-30 03:13:46,126 INFO L131 PetriNetUnfolder]: For 154835/154931 co-relation queries the response was YES. [2023-08-30 03:13:46,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218832 conditions, 50804 events. 35936/50804 cut-off events. For 154835/154931 co-relation queries the response was YES. Maximal size of possible extension queue 2791. Compared 343407 event pairs, 9793 based on Foata normal form. 38/46610 useless extension candidates. Maximal degree in co-relation 218793. Up to 47174 conditions per place. [2023-08-30 03:13:46,702 INFO L137 encePairwiseOnDemand]: 340/353 looper letters, 185 selfloop transitions, 82 changer transitions 0/269 dead transitions. [2023-08-30 03:13:46,703 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 269 transitions, 3304 flow [2023-08-30 03:13:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-30 03:13:46,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-30 03:13:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1559 transitions. [2023-08-30 03:13:46,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36803588290840417 [2023-08-30 03:13:46,705 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1559 transitions. [2023-08-30 03:13:46,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1559 transitions. [2023-08-30 03:13:46,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:13:46,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1559 transitions. [2023-08-30 03:13:46,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 129.91666666666666) internal successors, (1559), 12 states have internal predecessors, (1559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:46,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:46,712 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 353.0) internal successors, (4589), 13 states have internal predecessors, (4589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:46,712 INFO L175 Difference]: Start difference. First operand has 129 places, 182 transitions, 2061 flow. Second operand 12 states and 1559 transitions. [2023-08-30 03:13:46,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 269 transitions, 3304 flow [2023-08-30 03:13:50,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 269 transitions, 3212 flow, removed 41 selfloop flow, removed 2 redundant places. [2023-08-30 03:13:50,106 INFO L231 Difference]: Finished difference. Result has 144 places, 217 transitions, 2729 flow [2023-08-30 03:13:50,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=353, PETRI_DIFFERENCE_MINUEND_FLOW=1981, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2729, PETRI_PLACES=144, PETRI_TRANSITIONS=217} [2023-08-30 03:13:50,107 INFO L281 CegarLoopForPetriNet]: 96 programPoint places, 48 predicate places. [2023-08-30 03:13:50,107 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 217 transitions, 2729 flow [2023-08-30 03:13:50,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.7) internal successors, (1227), 10 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:50,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:13:50,108 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:13:50,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 03:13:50,108 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 77 more)] === [2023-08-30 03:13:50,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:13:50,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1374379365, now seen corresponding path program 1 times [2023-08-30 03:13:50,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:13:50,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417810246] [2023-08-30 03:13:50,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:13:50,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:13:50,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:13:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:13:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:13:50,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417810246] [2023-08-30 03:13:50,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417810246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:13:50,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:13:50,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:13:50,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317226654] [2023-08-30 03:13:50,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:13:50,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:13:50,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:13:50,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:13:50,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:13:50,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 353 [2023-08-30 03:13:50,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 217 transitions, 2729 flow. Second operand has 5 states, 5 states have (on average 141.4) internal successors, (707), 5 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:13:50,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:13:50,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 353 [2023-08-30 03:13:50,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand