./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --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/safe019_power.opt.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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 20:45:18,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 20:45:18,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 20:45:18,512 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 20:45:18,513 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 20:45:18,514 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 20:45:18,515 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 20:45:18,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 20:45:18,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 20:45:18,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 20:45:18,519 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 20:45:18,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 20:45:18,521 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 20:45:18,523 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 20:45:18,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 20:45:18,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 20:45:18,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 20:45:18,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 20:45:18,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 20:45:18,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 20:45:18,549 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 20:45:18,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 20:45:18,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 20:45:18,551 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 20:45:18,555 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 20:45:18,559 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 20:45:18,559 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 20:45:18,560 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 20:45:18,561 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 20:45:18,562 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 20:45:18,562 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 20:45:18,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 20:45:18,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 20:45:18,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 20:45:18,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 20:45:18,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 20:45:18,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 20:45:18,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 20:45:18,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 20:45:18,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 20:45:18,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 20:45:18,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 20:45:18,606 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 20:45:18,607 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 20:45:18,608 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 20:45:18,608 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 20:45:18,609 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 20:45:18,609 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 20:45:18,610 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 20:45:18,610 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 20:45:18,610 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 20:45:18,610 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 20:45:18,611 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 20:45:18,611 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 20:45:18,611 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 20:45:18,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 20:45:18,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 20:45:18,612 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 20:45:18,612 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 20:45:18,612 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 20:45:18,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 20:45:18,613 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 20:45:18,613 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 20:45:18,613 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 20:45:18,613 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 20:45:18,613 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 20:45:18,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 20:45:18,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:45:18,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 20:45:18,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 20:45:18,614 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 20:45:18,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 20:45:18,615 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 20:45:18,615 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 20:45:18,615 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 20:45:18,616 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 20:45:18,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 20:45:18,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 20:45:18,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 20:45:18,963 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 20:45:18,964 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 20:45:18,965 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 20:45:18,966 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-29 20:45:20,167 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 20:45:20,444 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 20:45:20,444 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe019_power.opt.i [2023-08-29 20:45:20,470 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476a43bfe/6fcd7afd28d442fea3b4010f6811969e/FLAG93238f459 [2023-08-29 20:45:20,488 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/476a43bfe/6fcd7afd28d442fea3b4010f6811969e [2023-08-29 20:45:20,496 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 20:45:20,497 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 20:45:20,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 20:45:20,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 20:45:20,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 20:45:20,503 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:45:20" (1/1) ... [2023-08-29 20:45:20,505 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@328132c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:20, skipping insertion in model container [2023-08-29 20:45:20,505 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 08:45:20" (1/1) ... [2023-08-29 20:45:20,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 20:45:20,556 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 20:45:20,718 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/safe019_power.opt.i[994,1007] [2023-08-29 20:45:20,966 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:45:20,985 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 20:45:21,001 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/safe019_power.opt.i[994,1007] [2023-08-29 20:45:21,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 20:45:21,088 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:45:21,088 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 20:45:21,094 INFO L208 MainTranslator]: Completed translation [2023-08-29 20:45:21,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21 WrapperNode [2023-08-29 20:45:21,095 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 20:45:21,096 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 20:45:21,096 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 20:45:21,096 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 20:45:21,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,134 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,177 INFO L138 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 194 [2023-08-29 20:45:21,177 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 20:45:21,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 20:45:21,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 20:45:21,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 20:45:21,186 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,202 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,203 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,216 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,226 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 20:45:21,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 20:45:21,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 20:45:21,244 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 20:45:21,245 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (1/1) ... [2023-08-29 20:45:21,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 20:45:21,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 20:45:21,280 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) [2023-08-29 20:45:21,290 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 [2023-08-29 20:45:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 20:45:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 20:45:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-29 20:45:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 20:45:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 20:45:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 20:45:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-29 20:45:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-29 20:45:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-29 20:45:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-29 20:45:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-29 20:45:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-29 20:45:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-29 20:45:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-29 20:45:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 20:45:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-29 20:45:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 20:45:21,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 20:45:21,326 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 20:45:21,565 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 20:45:21,567 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 20:45:22,163 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 20:45:22,742 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 20:45:22,742 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 20:45:22,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:45:22 BoogieIcfgContainer [2023-08-29 20:45:22,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 20:45:22,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 20:45:22,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 20:45:22,750 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 20:45:22,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 08:45:20" (1/3) ... [2023-08-29 20:45:22,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bf70fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:45:22, skipping insertion in model container [2023-08-29 20:45:22,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 08:45:21" (2/3) ... [2023-08-29 20:45:22,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55bf70fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 08:45:22, skipping insertion in model container [2023-08-29 20:45:22,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 08:45:22" (3/3) ... [2023-08-29 20:45:22,753 INFO L112 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2023-08-29 20:45:22,769 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 20:45:22,769 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2023-08-29 20:45:22,770 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 20:45:22,940 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 20:45:22,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 214 places, 203 transitions, 426 flow [2023-08-29 20:45:23,040 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-29 20:45:23,040 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:23,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 328 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-29 20:45:23,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 214 places, 203 transitions, 426 flow [2023-08-29 20:45:23,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 199 transitions, 410 flow [2023-08-29 20:45:23,055 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 20:45:23,063 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-29 20:45:23,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 199 transitions, 410 flow [2023-08-29 20:45:23,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 199 transitions, 410 flow [2023-08-29 20:45:23,121 INFO L130 PetriNetUnfolder]: 2/199 cut-off events. [2023-08-29 20:45:23,121 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:23,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 199 events. 2/199 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 325 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2023-08-29 20:45:23,128 INFO L119 LiptonReduction]: Number of co-enabled transitions 10216 [2023-08-29 20:45:34,602 INFO L134 LiptonReduction]: Checked pairs total: 55615 [2023-08-29 20:45:34,603 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-08-29 20:45:34,614 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 20:45:34,620 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;@4865d2b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 20:45:34,620 INFO L358 AbstractCegarLoop]: Starting to check reachability of 102 error locations. [2023-08-29 20:45:34,622 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 20:45:34,622 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:45:34,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:45:34,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 20:45:34,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:45:34,627 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:45:34,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1281, now seen corresponding path program 1 times [2023-08-29 20:45:34,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:45:34,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227573131] [2023-08-29 20:45:34,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:45:34,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:45:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:45:34,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:45:34,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:45:34,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227573131] [2023-08-29 20:45:34,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227573131] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:45:34,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:45:34,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 20:45:34,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404661826] [2023-08-29 20:45:34,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:45:34,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 20:45:34,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:45:34,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 20:45:34,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 20:45:34,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-29 20:45:34,885 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 90 transitions, 192 flow. Second operand has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:45:34,886 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:45:34,886 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-29 20:45:34,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:46:10,823 INFO L130 PetriNetUnfolder]: 241951/317300 cut-off events. [2023-08-29 20:46:10,824 INFO L131 PetriNetUnfolder]: For 94/94 co-relation queries the response was YES. [2023-08-29 20:46:11,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631380 conditions, 317300 events. 241951/317300 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 18073. Compared 2232899 event pairs, 241951 based on Foata normal form. 4320/142652 useless extension candidates. Maximal degree in co-relation 631368. Up to 312873 conditions per place. [2023-08-29 20:46:12,712 INFO L137 encePairwiseOnDemand]: 333/366 looper letters, 55 selfloop transitions, 0 changer transitions 0/57 dead transitions. [2023-08-29 20:46:12,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 57 transitions, 236 flow [2023-08-29 20:46:12,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 20:46:12,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 20:46:12,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 370 transitions. [2023-08-29 20:46:12,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.505464480874317 [2023-08-29 20:46:12,727 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 370 transitions. [2023-08-29 20:46:12,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 370 transitions. [2023-08-29 20:46:12,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:46:12,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 370 transitions. [2023-08-29 20:46:12,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 185.0) internal successors, (370), 2 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:12,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:12,740 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 366.0) internal successors, (1098), 3 states have internal predecessors, (1098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:12,741 INFO L175 Difference]: Start difference. First operand has 102 places, 90 transitions, 192 flow. Second operand 2 states and 370 transitions. [2023-08-29 20:46:12,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 57 transitions, 236 flow [2023-08-29 20:46:12,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 57 transitions, 232 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 20:46:12,833 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 122 flow [2023-08-29 20:46:12,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=122, PETRI_PLACES=67, PETRI_TRANSITIONS=57} [2023-08-29 20:46:12,838 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-29 20:46:12,838 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 122 flow [2023-08-29 20:46:12,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 141.5) internal successors, (283), 2 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:12,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:46:12,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:46:12,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 20:46:12,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:46:12,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:46:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash 39214187, now seen corresponding path program 1 times [2023-08-29 20:46:12,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:46:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847655816] [2023-08-29 20:46:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:46:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:46:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:46:13,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:46:13,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:46:13,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847655816] [2023-08-29 20:46:13,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847655816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:46:13,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:46:13,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:46:13,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553699991] [2023-08-29 20:46:13,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:46:13,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:46:13,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:46:13,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:46:13,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:46:13,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-29 20:46:13,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:13,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:46:13,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-29 20:46:13,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:46:36,118 INFO L130 PetriNetUnfolder]: 163615/219861 cut-off events. [2023-08-29 20:46:36,119 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 20:46:36,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438607 conditions, 219861 events. 163615/219861 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10616. Compared 1565539 event pairs, 97625 based on Foata normal form. 0/121370 useless extension candidates. Maximal degree in co-relation 438604. Up to 122981 conditions per place. [2023-08-29 20:46:37,464 INFO L137 encePairwiseOnDemand]: 345/366 looper letters, 68 selfloop transitions, 11 changer transitions 0/80 dead transitions. [2023-08-29 20:46:37,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 80 transitions, 326 flow [2023-08-29 20:46:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:46:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:46:37,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 497 transitions. [2023-08-29 20:46:37,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45264116575591984 [2023-08-29 20:46:37,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 497 transitions. [2023-08-29 20:46:37,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 497 transitions. [2023-08-29 20:46:37,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:46:37,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 497 transitions. [2023-08-29 20:46:37,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:37,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:37,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:37,474 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 122 flow. Second operand 3 states and 497 transitions. [2023-08-29 20:46:37,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 80 transitions, 326 flow [2023-08-29 20:46:37,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 80 transitions, 326 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 20:46:37,476 INFO L231 Difference]: Finished difference. Result has 69 places, 64 transitions, 214 flow [2023-08-29 20:46:37,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=69, PETRI_TRANSITIONS=64} [2023-08-29 20:46:37,478 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -33 predicate places. [2023-08-29 20:46:37,478 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 64 transitions, 214 flow [2023-08-29 20:46:37,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:37,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:46:37,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-29 20:46:37,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 20:46:37,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:46:37,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:46:37,480 INFO L85 PathProgramCache]: Analyzing trace with hash 39214188, now seen corresponding path program 1 times [2023-08-29 20:46:37,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:46:37,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971604393] [2023-08-29 20:46:37,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:46:37,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:46:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:46:37,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:46:37,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:46:37,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971604393] [2023-08-29 20:46:37,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971604393] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:46:37,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:46:37,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:46:37,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003500447] [2023-08-29 20:46:37,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:46:37,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:46:37,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:46:37,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:46:37,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:46:37,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-29 20:46:37,679 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 64 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:37,679 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:46:37,679 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-29 20:46:37,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:46:45,058 INFO L130 PetriNetUnfolder]: 42246/59359 cut-off events. [2023-08-29 20:46:45,058 INFO L131 PetriNetUnfolder]: For 15701/15701 co-relation queries the response was YES. [2023-08-29 20:46:45,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160105 conditions, 59359 events. 42246/59359 cut-off events. For 15701/15701 co-relation queries the response was YES. Maximal size of possible extension queue 3209. Compared 400453 event pairs, 33266 based on Foata normal form. 13376/63042 useless extension candidates. Maximal degree in co-relation 160100. Up to 56464 conditions per place. [2023-08-29 20:46:45,371 INFO L137 encePairwiseOnDemand]: 355/366 looper letters, 50 selfloop transitions, 1 changer transitions 0/54 dead transitions. [2023-08-29 20:46:45,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 54 transitions, 296 flow [2023-08-29 20:46:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:46:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:46:45,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-29 20:46:45,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4307832422586521 [2023-08-29 20:46:45,374 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-29 20:46:45,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-29 20:46:45,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:46:45,374 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-29 20:46:45,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:45,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:45,378 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:45,379 INFO L175 Difference]: Start difference. First operand has 69 places, 64 transitions, 214 flow. Second operand 3 states and 473 transitions. [2023-08-29 20:46:45,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 54 transitions, 296 flow [2023-08-29 20:46:45,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 54 transitions, 274 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:46:45,503 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 174 flow [2023-08-29 20:46:45,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-29 20:46:45,504 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-29 20:46:45,505 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 174 flow [2023-08-29 20:46:45,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:45,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:46:45,505 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 20:46:45,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 20:46:45,506 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:46:45,506 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:46:45,506 INFO L85 PathProgramCache]: Analyzing trace with hash -968223769, now seen corresponding path program 1 times [2023-08-29 20:46:45,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:46:45,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358002839] [2023-08-29 20:46:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:46:45,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:46:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:46:45,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:46:45,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:46:45,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358002839] [2023-08-29 20:46:45,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358002839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:46:45,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:46:45,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:46:45,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456527864] [2023-08-29 20:46:45,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:46:45,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:46:45,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:46:45,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:46:45,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:46:45,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-29 20:46:45,616 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:45,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:46:45,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-29 20:46:45,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:46:51,965 INFO L130 PetriNetUnfolder]: 35015/49232 cut-off events. [2023-08-29 20:46:51,965 INFO L131 PetriNetUnfolder]: For 5735/5783 co-relation queries the response was YES. [2023-08-29 20:46:52,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125876 conditions, 49232 events. 35015/49232 cut-off events. For 5735/5783 co-relation queries the response was YES. Maximal size of possible extension queue 2679. Compared 332825 event pairs, 9930 based on Foata normal form. 48/37720 useless extension candidates. Maximal degree in co-relation 125871. Up to 40604 conditions per place. [2023-08-29 20:46:52,222 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 85 selfloop transitions, 2 changer transitions 2/92 dead transitions. [2023-08-29 20:46:52,222 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 92 transitions, 474 flow [2023-08-29 20:46:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:46:52,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:46:52,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-08-29 20:46:52,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2023-08-29 20:46:52,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-08-29 20:46:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-08-29 20:46:52,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:46:52,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-08-29 20:46:52,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:52,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:52,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:52,230 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 174 flow. Second operand 3 states and 495 transitions. [2023-08-29 20:46:52,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 92 transitions, 474 flow [2023-08-29 20:46:52,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 92 transitions, 473 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:46:52,232 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 173 flow [2023-08-29 20:46:52,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=171, 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=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=173, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-29 20:46:52,233 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-29 20:46:52,234 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 173 flow [2023-08-29 20:46:52,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:52,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:46:52,234 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:46:52,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 20:46:52,235 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:46:52,235 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:46:52,235 INFO L85 PathProgramCache]: Analyzing trace with hash -257249967, now seen corresponding path program 1 times [2023-08-29 20:46:52,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:46:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73691715] [2023-08-29 20:46:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:46:52,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:46:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:46:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:46:52,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:46:52,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73691715] [2023-08-29 20:46:52,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73691715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:46:52,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:46:52,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:46:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372841748] [2023-08-29 20:46:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:46:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:46:52,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:46:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:46:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:46:52,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 366 [2023-08-29 20:46:52,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 173 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:52,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:46:52,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 366 [2023-08-29 20:46:52,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:46:58,436 INFO L130 PetriNetUnfolder]: 34038/48863 cut-off events. [2023-08-29 20:46:58,436 INFO L131 PetriNetUnfolder]: For 7461/7461 co-relation queries the response was YES. [2023-08-29 20:46:58,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125807 conditions, 48863 events. 34038/48863 cut-off events. For 7461/7461 co-relation queries the response was YES. Maximal size of possible extension queue 2774. Compared 339444 event pairs, 11946 based on Foata normal form. 0/37735 useless extension candidates. Maximal degree in co-relation 125802. Up to 35309 conditions per place. [2023-08-29 20:46:58,698 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 77 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-29 20:46:58,698 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 435 flow [2023-08-29 20:46:58,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:46:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:46:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-29 20:46:58,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-29 20:46:58,700 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-29 20:46:58,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-29 20:46:58,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:46:58,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-29 20:46:58,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:58,704 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:58,705 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:58,705 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 173 flow. Second operand 3 states and 488 transitions. [2023-08-29 20:46:58,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 435 flow [2023-08-29 20:46:58,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 83 transitions, 429 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:46:58,710 INFO L231 Difference]: Finished difference. Result has 59 places, 52 transitions, 182 flow [2023-08-29 20:46:58,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=52} [2023-08-29 20:46:58,711 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -43 predicate places. [2023-08-29 20:46:58,711 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 52 transitions, 182 flow [2023-08-29 20:46:58,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:58,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:46:58,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:46:58,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 20:46:58,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:46:58,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:46:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash -257249715, now seen corresponding path program 1 times [2023-08-29 20:46:58,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:46:58,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682018006] [2023-08-29 20:46:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:46:58,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:46:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:46:59,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:46:59,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:46:59,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682018006] [2023-08-29 20:46:59,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682018006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:46:59,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:46:59,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:46:59,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296212668] [2023-08-29 20:46:59,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:46:59,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:46:59,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:46:59,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:46:59,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:46:59,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-29 20:46:59,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 52 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:46:59,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:46:59,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-29 20:46:59,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:05,761 INFO L130 PetriNetUnfolder]: 40320/56141 cut-off events. [2023-08-29 20:47:05,761 INFO L131 PetriNetUnfolder]: For 9184/9200 co-relation queries the response was YES. [2023-08-29 20:47:05,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146964 conditions, 56141 events. 40320/56141 cut-off events. For 9184/9200 co-relation queries the response was YES. Maximal size of possible extension queue 2442. Compared 356238 event pairs, 13860 based on Foata normal form. 16/44869 useless extension candidates. Maximal degree in co-relation 146958. Up to 52631 conditions per place. [2023-08-29 20:47:06,038 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 74 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-29 20:47:06,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 80 transitions, 436 flow [2023-08-29 20:47:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:47:06,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:47:06,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-29 20:47:06,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-29 20:47:06,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-29 20:47:06,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-29 20:47:06,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:06,042 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-29 20:47:06,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:06,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:06,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:06,046 INFO L175 Difference]: Start difference. First operand has 59 places, 52 transitions, 182 flow. Second operand 3 states and 482 transitions. [2023-08-29 20:47:06,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 80 transitions, 436 flow [2023-08-29 20:47:06,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 80 transitions, 426 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:47:06,054 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 208 flow [2023-08-29 20:47:06,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-29 20:47:06,055 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -42 predicate places. [2023-08-29 20:47:06,055 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 208 flow [2023-08-29 20:47:06,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:06,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:06,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:06,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 20:47:06,056 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:06,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:06,056 INFO L85 PathProgramCache]: Analyzing trace with hash 615192729, now seen corresponding path program 1 times [2023-08-29 20:47:06,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:06,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350088532] [2023-08-29 20:47:06,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:06,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:06,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:06,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:06,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:06,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350088532] [2023-08-29 20:47:06,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350088532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:06,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:06,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:47:06,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049423643] [2023-08-29 20:47:06,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:06,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:47:06,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:06,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:47:06,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:47:06,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-29 20:47:06,448 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:06,448 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:06,448 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-29 20:47:06,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:13,200 INFO L130 PetriNetUnfolder]: 40068/55841 cut-off events. [2023-08-29 20:47:13,200 INFO L131 PetriNetUnfolder]: For 11013/11141 co-relation queries the response was YES. [2023-08-29 20:47:13,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150153 conditions, 55841 events. 40068/55841 cut-off events. For 11013/11141 co-relation queries the response was YES. Maximal size of possible extension queue 2461. Compared 356604 event pairs, 11139 based on Foata normal form. 96/44845 useless extension candidates. Maximal degree in co-relation 150146. Up to 51165 conditions per place. [2023-08-29 20:47:13,465 INFO L137 encePairwiseOnDemand]: 362/366 looper letters, 78 selfloop transitions, 4 changer transitions 0/84 dead transitions. [2023-08-29 20:47:13,465 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 468 flow [2023-08-29 20:47:13,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:47:13,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:47:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 482 transitions. [2023-08-29 20:47:13,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43897996357012753 [2023-08-29 20:47:13,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 482 transitions. [2023-08-29 20:47:13,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 482 transitions. [2023-08-29 20:47:13,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:13,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 482 transitions. [2023-08-29 20:47:13,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:13,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:13,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:13,472 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 208 flow. Second operand 3 states and 482 transitions. [2023-08-29 20:47:13,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 468 flow [2023-08-29 20:47:13,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 84 transitions, 464 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:47:13,477 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 228 flow [2023-08-29 20:47:13,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-29 20:47:13,478 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -40 predicate places. [2023-08-29 20:47:13,478 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 228 flow [2023-08-29 20:47:13,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:13,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:13,479 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:13,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 20:47:13,479 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:13,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:13,479 INFO L85 PathProgramCache]: Analyzing trace with hash 48665703, now seen corresponding path program 1 times [2023-08-29 20:47:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669752092] [2023-08-29 20:47:13,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:13,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:13,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:13,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:13,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669752092] [2023-08-29 20:47:13,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669752092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:13,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:13,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 20:47:13,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883479489] [2023-08-29 20:47:13,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:13,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 20:47:13,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:13,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 20:47:13,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 20:47:13,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 366 [2023-08-29 20:47:13,816 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:13,816 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:13,816 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 366 [2023-08-29 20:47:13,816 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:20,181 INFO L130 PetriNetUnfolder]: 38056/53455 cut-off events. [2023-08-29 20:47:20,181 INFO L131 PetriNetUnfolder]: For 16011/16011 co-relation queries the response was YES. [2023-08-29 20:47:20,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149801 conditions, 53455 events. 38056/53455 cut-off events. For 16011/16011 co-relation queries the response was YES. Maximal size of possible extension queue 2464. Compared 344599 event pairs, 13692 based on Foata normal form. 0/42927 useless extension candidates. Maximal degree in co-relation 149793. Up to 20966 conditions per place. [2023-08-29 20:47:20,486 INFO L137 encePairwiseOnDemand]: 354/366 looper letters, 80 selfloop transitions, 14 changer transitions 0/96 dead transitions. [2023-08-29 20:47:20,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 96 transitions, 547 flow [2023-08-29 20:47:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 20:47:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 20:47:20,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 733 transitions. [2023-08-29 20:47:20,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005464480874317 [2023-08-29 20:47:20,489 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 733 transitions. [2023-08-29 20:47:20,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 733 transitions. [2023-08-29 20:47:20,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:20,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 733 transitions. [2023-08-29 20:47:20,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:20,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:20,495 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 366.0) internal successors, (2196), 6 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:20,495 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 228 flow. Second operand 5 states and 733 transitions. [2023-08-29 20:47:20,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 96 transitions, 547 flow [2023-08-29 20:47:20,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 96 transitions, 542 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:47:20,499 INFO L231 Difference]: Finished difference. Result has 66 places, 64 transitions, 318 flow [2023-08-29 20:47:20,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=318, PETRI_PLACES=66, PETRI_TRANSITIONS=64} [2023-08-29 20:47:20,500 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-29 20:47:20,500 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 64 transitions, 318 flow [2023-08-29 20:47:20,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:20,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:20,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:20,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 20:47:20,501 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:20,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:20,502 INFO L85 PathProgramCache]: Analyzing trace with hash 615192478, now seen corresponding path program 1 times [2023-08-29 20:47:20,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:20,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102181974] [2023-08-29 20:47:20,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:20,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:20,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:20,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:20,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:20,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102181974] [2023-08-29 20:47:20,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102181974] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:20,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:20,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:47:20,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800281761] [2023-08-29 20:47:20,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:20,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:47:20,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:20,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:47:20,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:47:20,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-29 20:47:20,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 64 transitions, 318 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) [2023-08-29 20:47:20,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:20,883 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-29 20:47:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:27,449 INFO L130 PetriNetUnfolder]: 36314/51473 cut-off events. [2023-08-29 20:47:27,449 INFO L131 PetriNetUnfolder]: For 44456/44456 co-relation queries the response was YES. [2023-08-29 20:47:27,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159448 conditions, 51473 events. 36314/51473 cut-off events. For 44456/44456 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 337422 event pairs, 15784 based on Foata normal form. 240/45870 useless extension candidates. Maximal degree in co-relation 159438. Up to 38172 conditions per place. [2023-08-29 20:47:27,778 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 76 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2023-08-29 20:47:27,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 86 transitions, 550 flow [2023-08-29 20:47:27,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:47:27,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:47:27,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 621 transitions. [2023-08-29 20:47:27,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418032786885246 [2023-08-29 20:47:27,780 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 621 transitions. [2023-08-29 20:47:27,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 621 transitions. [2023-08-29 20:47:27,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:27,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 621 transitions. [2023-08-29 20:47:27,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:27,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:27,784 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:27,784 INFO L175 Difference]: Start difference. First operand has 66 places, 64 transitions, 318 flow. Second operand 4 states and 621 transitions. [2023-08-29 20:47:27,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 86 transitions, 550 flow [2023-08-29 20:47:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 539 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 20:47:28,157 INFO L231 Difference]: Finished difference. Result has 65 places, 63 transitions, 313 flow [2023-08-29 20:47:28,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=313, PETRI_PLACES=65, PETRI_TRANSITIONS=63} [2023-08-29 20:47:28,158 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -37 predicate places. [2023-08-29 20:47:28,158 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 63 transitions, 313 flow [2023-08-29 20:47:28,158 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) [2023-08-29 20:47:28,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:28,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:28,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 20:47:28,159 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:28,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:28,159 INFO L85 PathProgramCache]: Analyzing trace with hash 615065257, now seen corresponding path program 1 times [2023-08-29 20:47:28,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:28,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626948308] [2023-08-29 20:47:28,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:28,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:28,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:28,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:28,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626948308] [2023-08-29 20:47:28,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626948308] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:28,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:28,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:47:28,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575277521] [2023-08-29 20:47:28,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:28,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:47:28,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:28,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:47:28,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:47:28,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 366 [2023-08-29 20:47:28,340 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 63 transitions, 313 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) [2023-08-29 20:47:28,340 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:28,340 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 366 [2023-08-29 20:47:28,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:35,145 INFO L130 PetriNetUnfolder]: 35844/50649 cut-off events. [2023-08-29 20:47:35,145 INFO L131 PetriNetUnfolder]: For 48872/48960 co-relation queries the response was YES. [2023-08-29 20:47:35,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157733 conditions, 50649 events. 35844/50649 cut-off events. For 48872/48960 co-relation queries the response was YES. Maximal size of possible extension queue 2444. Compared 342993 event pairs, 10599 based on Foata normal form. 160/44934 useless extension candidates. Maximal degree in co-relation 157724. Up to 41180 conditions per place. [2023-08-29 20:47:35,451 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 105 selfloop transitions, 2 changer transitions 0/112 dead transitions. [2023-08-29 20:47:35,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 112 transitions, 767 flow [2023-08-29 20:47:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:47:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:47:35,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 489 transitions. [2023-08-29 20:47:35,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453551912568306 [2023-08-29 20:47:35,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 489 transitions. [2023-08-29 20:47:35,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 489 transitions. [2023-08-29 20:47:35,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:35,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 489 transitions. [2023-08-29 20:47:35,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:35,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:35,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:35,455 INFO L175 Difference]: Start difference. First operand has 65 places, 63 transitions, 313 flow. Second operand 3 states and 489 transitions. [2023-08-29 20:47:35,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 112 transitions, 767 flow [2023-08-29 20:47:35,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 112 transitions, 757 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:47:35,760 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 315 flow [2023-08-29 20:47:35,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=315, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-29 20:47:35,761 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -36 predicate places. [2023-08-29 20:47:35,761 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 315 flow [2023-08-29 20:47:35,762 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) [2023-08-29 20:47:35,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:35,762 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:35,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 20:47:35,762 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:35,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:35,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1887153147, now seen corresponding path program 1 times [2023-08-29 20:47:35,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:35,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688310092] [2023-08-29 20:47:35,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:35,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:36,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:36,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688310092] [2023-08-29 20:47:36,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688310092] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:36,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:36,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 20:47:36,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681112091] [2023-08-29 20:47:36,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:36,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:47:36,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:36,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:47:36,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:47:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 366 [2023-08-29 20:47:36,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 315 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:36,017 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:36,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 366 [2023-08-29 20:47:36,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:42,661 INFO L130 PetriNetUnfolder]: 35969/51020 cut-off events. [2023-08-29 20:47:42,662 INFO L131 PetriNetUnfolder]: For 40834/40834 co-relation queries the response was YES. [2023-08-29 20:47:42,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163665 conditions, 51020 events. 35969/51020 cut-off events. For 40834/40834 co-relation queries the response was YES. Maximal size of possible extension queue 2438. Compared 334927 event pairs, 15604 based on Foata normal form. 36/45213 useless extension candidates. Maximal degree in co-relation 163655. Up to 37884 conditions per place. [2023-08-29 20:47:43,192 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 75 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2023-08-29 20:47:43,193 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 85 transitions, 546 flow [2023-08-29 20:47:43,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:47:43,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:47:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-29 20:47:43,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4435336976320583 [2023-08-29 20:47:43,194 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-29 20:47:43,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-29 20:47:43,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:43,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-29 20:47:43,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:43,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:43,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:43,198 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 315 flow. Second operand 3 states and 487 transitions. [2023-08-29 20:47:43,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 85 transitions, 546 flow [2023-08-29 20:47:43,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 85 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:47:43,542 INFO L231 Difference]: Finished difference. Result has 67 places, 63 transitions, 328 flow [2023-08-29 20:47:43,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=311, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=328, PETRI_PLACES=67, PETRI_TRANSITIONS=63} [2023-08-29 20:47:43,542 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -35 predicate places. [2023-08-29 20:47:43,543 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 63 transitions, 328 flow [2023-08-29 20:47:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:43,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:43,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 20:47:43,544 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:43,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:43,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1891124355, now seen corresponding path program 1 times [2023-08-29 20:47:43,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:43,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448317507] [2023-08-29 20:47:43,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:43,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:43,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:43,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:43,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448317507] [2023-08-29 20:47:43,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448317507] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:43,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:43,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 20:47:43,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057072757] [2023-08-29 20:47:43,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:43,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 20:47:43,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:43,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 20:47:43,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 20:47:43,771 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 366 [2023-08-29 20:47:43,772 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 328 flow. Second operand has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:43,773 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:43,773 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 366 [2023-08-29 20:47:43,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:49,554 INFO L130 PetriNetUnfolder]: 31769/44682 cut-off events. [2023-08-29 20:47:49,554 INFO L131 PetriNetUnfolder]: For 40133/40133 co-relation queries the response was YES. [2023-08-29 20:47:49,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146357 conditions, 44682 events. 31769/44682 cut-off events. For 40133/40133 co-relation queries the response was YES. Maximal size of possible extension queue 2231. Compared 281841 event pairs, 10035 based on Foata normal form. 360/39838 useless extension candidates. Maximal degree in co-relation 146346. Up to 22169 conditions per place. [2023-08-29 20:47:49,784 INFO L137 encePairwiseOnDemand]: 347/366 looper letters, 73 selfloop transitions, 21 changer transitions 0/96 dead transitions. [2023-08-29 20:47:49,784 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 96 transitions, 692 flow [2023-08-29 20:47:49,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:47:49,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:47:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 603 transitions. [2023-08-29 20:47:49,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41188524590163933 [2023-08-29 20:47:49,786 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 603 transitions. [2023-08-29 20:47:49,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 603 transitions. [2023-08-29 20:47:49,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:49,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 603 transitions. [2023-08-29 20:47:49,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.75) internal successors, (603), 4 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:49,789 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:49,790 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:49,790 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 328 flow. Second operand 4 states and 603 transitions. [2023-08-29 20:47:49,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 96 transitions, 692 flow [2023-08-29 20:47:50,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 20:47:50,020 INFO L231 Difference]: Finished difference. Result has 70 places, 72 transitions, 503 flow [2023-08-29 20:47:50,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=318, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=503, PETRI_PLACES=70, PETRI_TRANSITIONS=72} [2023-08-29 20:47:50,021 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -32 predicate places. [2023-08-29 20:47:50,021 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 72 transitions, 503 flow [2023-08-29 20:47:50,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.2) internal successors, (676), 5 states have internal predecessors, (676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:50,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:50,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 20:47:50,022 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:50,023 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:50,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1976179172, now seen corresponding path program 1 times [2023-08-29 20:47:50,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:50,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398620967] [2023-08-29 20:47:50,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:50,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:50,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398620967] [2023-08-29 20:47:50,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398620967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:50,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:50,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:47:50,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828614716] [2023-08-29 20:47:50,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:50,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 20:47:50,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:50,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 20:47:50,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 20:47:50,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 366 [2023-08-29 20:47:50,354 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 72 transitions, 503 flow. Second operand has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:50,354 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:50,354 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 366 [2023-08-29 20:47:50,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:47:58,667 INFO L130 PetriNetUnfolder]: 48927/68560 cut-off events. [2023-08-29 20:47:58,667 INFO L131 PetriNetUnfolder]: For 116812/116940 co-relation queries the response was YES. [2023-08-29 20:47:58,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256985 conditions, 68560 events. 48927/68560 cut-off events. For 116812/116940 co-relation queries the response was YES. Maximal size of possible extension queue 3356. Compared 460746 event pairs, 19620 based on Foata normal form. 272/60400 useless extension candidates. Maximal degree in co-relation 256973. Up to 39512 conditions per place. [2023-08-29 20:47:59,074 INFO L137 encePairwiseOnDemand]: 363/366 looper letters, 104 selfloop transitions, 3 changer transitions 0/110 dead transitions. [2023-08-29 20:47:59,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 110 transitions, 949 flow [2023-08-29 20:47:59,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 20:47:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 20:47:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-29 20:47:59,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43989071038251365 [2023-08-29 20:47:59,076 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-29 20:47:59,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-29 20:47:59,076 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:47:59,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-29 20:47:59,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:59,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:59,079 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 366.0) internal successors, (1464), 4 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:59,080 INFO L175 Difference]: Start difference. First operand has 70 places, 72 transitions, 503 flow. Second operand 3 states and 483 transitions. [2023-08-29 20:47:59,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 110 transitions, 949 flow [2023-08-29 20:47:59,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 110 transitions, 945 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 20:47:59,578 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 511 flow [2023-08-29 20:47:59,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=511, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-29 20:47:59,579 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -30 predicate places. [2023-08-29 20:47:59,579 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 511 flow [2023-08-29 20:47:59,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:59,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:47:59,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:47:59,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 20:47:59,580 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:47:59,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:47:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1966221305, now seen corresponding path program 1 times [2023-08-29 20:47:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:47:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925848875] [2023-08-29 20:47:59,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:47:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:47:59,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:47:59,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:47:59,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:47:59,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925848875] [2023-08-29 20:47:59,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925848875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:47:59,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:47:59,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 20:47:59,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673532125] [2023-08-29 20:47:59,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:47:59,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 20:47:59,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:47:59,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 20:47:59,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 20:47:59,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 366 [2023-08-29 20:47:59,865 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 511 flow. Second operand has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:47:59,865 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:47:59,865 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 366 [2023-08-29 20:47:59,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 20:48:15,136 INFO L130 PetriNetUnfolder]: 84398/118677 cut-off events. [2023-08-29 20:48:15,136 INFO L131 PetriNetUnfolder]: For 236323/237249 co-relation queries the response was YES. [2023-08-29 20:48:15,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455212 conditions, 118677 events. 84398/118677 cut-off events. For 236323/237249 co-relation queries the response was YES. Maximal size of possible extension queue 5939. Compared 866652 event pairs, 21352 based on Foata normal form. 503/103982 useless extension candidates. Maximal degree in co-relation 455198. Up to 61206 conditions per place. [2023-08-29 20:48:15,928 INFO L137 encePairwiseOnDemand]: 361/366 looper letters, 152 selfloop transitions, 5 changer transitions 0/160 dead transitions. [2023-08-29 20:48:15,928 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 160 transitions, 1434 flow [2023-08-29 20:48:15,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 20:48:15,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 20:48:15,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-08-29 20:48:15,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43579234972677594 [2023-08-29 20:48:15,930 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-08-29 20:48:15,930 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-08-29 20:48:15,930 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 20:48:15,930 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-08-29 20:48:15,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:15,933 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:15,933 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 366.0) internal successors, (1830), 5 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:15,933 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 511 flow. Second operand 4 states and 638 transitions. [2023-08-29 20:48:15,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 160 transitions, 1434 flow [2023-08-29 20:48:17,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 160 transitions, 1421 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-29 20:48:17,700 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 525 flow [2023-08-29 20:48:17,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=366, PETRI_DIFFERENCE_MINUEND_FLOW=504, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=525, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-29 20:48:17,701 INFO L281 CegarLoopForPetriNet]: 102 programPoint places, -27 predicate places. [2023-08-29 20:48:17,701 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 525 flow [2023-08-29 20:48:17,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:17,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 20:48:17,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 20:48:17,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 20:48:17,702 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 99 more)] === [2023-08-29 20:48:17,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 20:48:17,703 INFO L85 PathProgramCache]: Analyzing trace with hash -476739357, now seen corresponding path program 2 times [2023-08-29 20:48:17,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 20:48:17,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861065766] [2023-08-29 20:48:17,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 20:48:17,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 20:48:17,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 20:48:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 20:48:19,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 20:48:19,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861065766] [2023-08-29 20:48:19,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861065766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 20:48:19,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 20:48:19,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-29 20:48:19,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505909111] [2023-08-29 20:48:19,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 20:48:19,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 20:48:19,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 20:48:19,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 20:48:19,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-08-29 20:48:19,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 366 [2023-08-29 20:48:19,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 20:48:19,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 20:48:19,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 366 [2023-08-29 20:48:19,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand