./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:48:21,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:48:21,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:48:21,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:48:21,590 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:48:21,592 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:48:21,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:48:21,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:48:21,597 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:48:21,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:48:21,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:48:21,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:48:21,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:48:21,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:48:21,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:48:21,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:48:21,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:48:21,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:48:21,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:48:21,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:48:21,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:48:21,620 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:48:21,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:48:21,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:48:21,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:48:21,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:48:21,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:48:21,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:48:21,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:48:21,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:48:21,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:48:21,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:48:21,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:48:21,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:48:21,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:48:21,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:48:21,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:48:21,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:48:21,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:48:21,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:48:21,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:48:21,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:48:21,654 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:48:21,654 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:48:21,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:48:21,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:48:21,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:48:21,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:48:21,657 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:48:21,657 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:48:21,657 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:48:21,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:48:21,658 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:48:21,658 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:48:21,658 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:48:21,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:48:21,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:48:21,659 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:48:21,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:48:21,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:48:21,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:48:21,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:48:21,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:48:21,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:48:21,661 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:48:21,662 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3f696f3d7a078e1a0d9bb5ce793945c7092990826a45e57529562474d0b18f4a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:48:21,883 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:48:21,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:48:21,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:48:21,902 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:48:21,902 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:48:21,903 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-08-30 05:48:22,801 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:48:22,971 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:48:22,971 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c [2023-08-30 05:48:22,976 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142b7b61f/3d024fc4fca746b0a194547ab5000ed7/FLAGd3004fc0b [2023-08-30 05:48:22,991 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/142b7b61f/3d024fc4fca746b0a194547ab5000ed7 [2023-08-30 05:48:22,993 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:48:22,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:48:22,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:48:22,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:48:22,999 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:48:23,000 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:22" (1/1) ... [2023-08-30 05:48:23,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675cb732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23, skipping insertion in model container [2023-08-30 05:48:23,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:48:22" (1/1) ... [2023-08-30 05:48:23,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:48:23,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:48:23,137 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-08-30 05:48:23,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:48:23,150 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:48:23,163 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-5.wvr.c[3027,3040] [2023-08-30 05:48:23,169 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:48:23,174 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:48:23,176 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:48:23,180 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:48:23,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23 WrapperNode [2023-08-30 05:48:23,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:48:23,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:48:23,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:48:23,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:48:23,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,194 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,209 INFO L138 Inliner]: procedures = 22, calls = 45, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 149 [2023-08-30 05:48:23,209 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:48:23,210 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:48:23,210 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:48:23,210 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:48:23,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,228 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:48:23,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:48:23,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:48:23,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:48:23,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (1/1) ... [2023-08-30 05:48:23,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:48:23,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:23,268 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:48:23,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:48:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:48:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:48:23,303 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:48:23,303 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:48:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:48:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:48:23,304 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:48:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:48:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:48:23,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:48:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:48:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:48:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:48:23,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:48:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:48:23,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:48:23,306 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:48:23,423 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:48:23,424 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:48:23,647 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:48:23,691 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:48:23,697 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-30 05:48:23,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:48:23 BoogieIcfgContainer [2023-08-30 05:48:23,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:48:23,712 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:48:23,713 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:48:23,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:48:23,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:48:22" (1/3) ... [2023-08-30 05:48:23,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8e0081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:48:23, skipping insertion in model container [2023-08-30 05:48:23,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:48:23" (2/3) ... [2023-08-30 05:48:23,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c8e0081 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:48:23, skipping insertion in model container [2023-08-30 05:48:23,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:48:23" (3/3) ... [2023-08-30 05:48:23,717 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-5.wvr.c [2023-08-30 05:48:23,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:48:23,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:48:23,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:48:23,797 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:48:23,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2023-08-30 05:48:23,878 INFO L130 PetriNetUnfolder]: 7/122 cut-off events. [2023-08-30 05:48:23,878 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:48:23,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 122 events. 7/122 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 132 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 05:48:23,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 125 transitions, 274 flow [2023-08-30 05:48:23,888 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 118 transitions, 254 flow [2023-08-30 05:48:23,891 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:48:23,902 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 118 transitions, 254 flow [2023-08-30 05:48:23,906 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 118 transitions, 254 flow [2023-08-30 05:48:23,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 118 transitions, 254 flow [2023-08-30 05:48:23,958 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-08-30 05:48:23,958 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:48:23,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 7/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-30 05:48:23,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 1742 [2023-08-30 05:48:27,244 INFO L134 LiptonReduction]: Checked pairs total: 2832 [2023-08-30 05:48:27,245 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-30 05:48:27,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:48:27,263 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;@23f15559, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:48:27,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:48:27,265 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-30 05:48:27,265 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:27,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:27,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:48:27,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:27,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:27,269 INFO L85 PathProgramCache]: Analyzing trace with hash 532, now seen corresponding path program 1 times [2023-08-30 05:48:27,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849734311] [2023-08-30 05:48:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:27,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:27,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:27,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:27,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849734311] [2023-08-30 05:48:27,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849734311] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:27,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:27,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:48:27,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671454809] [2023-08-30 05:48:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:27,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:48:27,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:27,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:48:27,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:48:27,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-08-30 05:48:27,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:27,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-08-30 05:48:27,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:27,443 INFO L130 PetriNetUnfolder]: 207/366 cut-off events. [2023-08-30 05:48:27,444 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-08-30 05:48:27,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 366 events. 207/366 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1741 event pairs, 203 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 612. Up to 359 conditions per place. [2023-08-30 05:48:27,450 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 28 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-30 05:48:27,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 138 flow [2023-08-30 05:48:27,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:48:27,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:48:27,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 253 transitions. [2023-08-30 05:48:27,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.524896265560166 [2023-08-30 05:48:27,464 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 253 transitions. [2023-08-30 05:48:27,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 253 transitions. [2023-08-30 05:48:27,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:27,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 253 transitions. [2023-08-30 05:48:27,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.5) internal successors, (253), 2 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,473 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,474 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,475 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 253 transitions. [2023-08-30 05:48:27,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 138 flow [2023-08-30 05:48:27,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 126 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:48:27,479 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2023-08-30 05:48:27,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-08-30 05:48:27,483 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:48:27,483 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2023-08-30 05:48:27,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 111.5) internal successors, (223), 2 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:27,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:48:27,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:48:27,487 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:27,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash 525433, now seen corresponding path program 1 times [2023-08-30 05:48:27,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:27,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208344142] [2023-08-30 05:48:27,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:27,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:27,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:27,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208344142] [2023-08-30 05:48:27,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208344142] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:27,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:27,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:48:27,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937507889] [2023-08-30 05:48:27,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:27,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:48:27,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:27,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:48:27,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:48:27,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-08-30 05:48:27,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,791 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:27,791 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-08-30 05:48:27,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:27,849 INFO L130 PetriNetUnfolder]: 198/348 cut-off events. [2023-08-30 05:48:27,849 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:27,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 704 conditions, 348 events. 198/348 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1630 event pairs, 194 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 701. Up to 340 conditions per place. [2023-08-30 05:48:27,852 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 25 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-30 05:48:27,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 118 flow [2023-08-30 05:48:27,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:27,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-30 05:48:27,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4578146611341632 [2023-08-30 05:48:27,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-30 05:48:27,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-30 05:48:27,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:27,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-30 05:48:27,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,860 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,860 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 331 transitions. [2023-08-30 05:48:27,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 118 flow [2023-08-30 05:48:27,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 118 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:48:27,861 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2023-08-30 05:48:27,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-08-30 05:48:27,862 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:48:27,862 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2023-08-30 05:48:27,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:27,863 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:48:27,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:48:27,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:27,870 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:27,871 INFO L85 PathProgramCache]: Analyzing trace with hash 525435, now seen corresponding path program 1 times [2023-08-30 05:48:27,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:27,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826028101] [2023-08-30 05:48:27,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:27,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:27,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:27,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:27,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826028101] [2023-08-30 05:48:27,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826028101] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:27,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:27,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:48:27,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279374949] [2023-08-30 05:48:27,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:27,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:48:27,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:27,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:48:27,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:48:27,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 241 [2023-08-30 05:48:27,972 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:27,972 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:27,972 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 241 [2023-08-30 05:48:27,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,013 INFO L130 PetriNetUnfolder]: 189/330 cut-off events. [2023-08-30 05:48:28,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 670 conditions, 330 events. 189/330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 1540 event pairs, 185 based on Foata normal form. 0/185 useless extension candidates. Maximal degree in co-relation 666. Up to 322 conditions per place. [2023-08-30 05:48:28,015 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 23 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 05:48:28,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 112 flow [2023-08-30 05:48:28,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:28,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:28,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 344 transitions. [2023-08-30 05:48:28,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47579529737206083 [2023-08-30 05:48:28,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 344 transitions. [2023-08-30 05:48:28,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 344 transitions. [2023-08-30 05:48:28,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 344 transitions. [2023-08-30 05:48:28,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,020 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 344 transitions. [2023-08-30 05:48:28,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 112 flow [2023-08-30 05:48:28,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 111 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:28,021 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-08-30 05:48:28,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-08-30 05:48:28,022 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-08-30 05:48:28,024 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-08-30 05:48:28,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:48:28,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:48:28,025 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,026 INFO L85 PathProgramCache]: Analyzing trace with hash 504954454, now seen corresponding path program 1 times [2023-08-30 05:48:28,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501033539] [2023-08-30 05:48:28,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:28,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:28,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:28,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501033539] [2023-08-30 05:48:28,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501033539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:28,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:28,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:48:28,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236890807] [2023-08-30 05:48:28,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:28,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:48:28,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:28,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:48:28,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:48:28,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-08-30 05:48:28,095 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:28,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-08-30 05:48:28,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,133 INFO L130 PetriNetUnfolder]: 176/306 cut-off events. [2023-08-30 05:48:28,133 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 306 events. 176/306 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1401 event pairs, 172 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 619. Up to 298 conditions per place. [2023-08-30 05:48:28,135 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 21 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-30 05:48:28,135 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 105 flow [2023-08-30 05:48:28,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:28,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:28,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-30 05:48:28,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45228215767634855 [2023-08-30 05:48:28,136 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-30 05:48:28,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-30 05:48:28,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-30 05:48:28,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,139 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,139 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 327 transitions. [2023-08-30 05:48:28,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 105 flow [2023-08-30 05:48:28,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 104 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:28,140 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2023-08-30 05:48:28,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-30 05:48:28,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-08-30 05:48:28,141 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2023-08-30 05:48:28,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:48:28,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:48:28,142 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,142 INFO L85 PathProgramCache]: Analyzing trace with hash 504954456, now seen corresponding path program 1 times [2023-08-30 05:48:28,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702097100] [2023-08-30 05:48:28,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:28,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:28,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:28,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702097100] [2023-08-30 05:48:28,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702097100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:28,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:28,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:48:28,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778010188] [2023-08-30 05:48:28,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:28,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:48:28,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:28,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:48:28,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:48:28,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 241 [2023-08-30 05:48:28,212 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,212 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:28,212 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 241 [2023-08-30 05:48:28,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,260 INFO L130 PetriNetUnfolder]: 163/282 cut-off events. [2023-08-30 05:48:28,261 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 576 conditions, 282 events. 163/282 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1226 event pairs, 159 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 572. Up to 274 conditions per place. [2023-08-30 05:48:28,262 INFO L137 encePairwiseOnDemand]: 238/241 looper letters, 19 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 05:48:28,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 98 flow [2023-08-30 05:48:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-08-30 05:48:28,264 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4702627939142462 [2023-08-30 05:48:28,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-08-30 05:48:28,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-08-30 05:48:28,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,264 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-08-30 05:48:28,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,266 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,266 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 340 transitions. [2023-08-30 05:48:28,267 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 98 flow [2023-08-30 05:48:28,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:28,267 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2023-08-30 05:48:28,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-30 05:48:28,268 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:48:28,268 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2023-08-30 05:48:28,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:28,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:48:28,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,269 INFO L85 PathProgramCache]: Analyzing trace with hash -70060904, now seen corresponding path program 1 times [2023-08-30 05:48:28,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145864103] [2023-08-30 05:48:28,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:28,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:28,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145864103] [2023-08-30 05:48:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145864103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:28,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:48:28,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508267134] [2023-08-30 05:48:28,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:28,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:48:28,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:28,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:48:28,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:48:28,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-08-30 05:48:28,316 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,316 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:28,316 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-08-30 05:48:28,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,346 INFO L130 PetriNetUnfolder]: 130/231 cut-off events. [2023-08-30 05:48:28,346 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 231 events. 130/231 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 959 event pairs, 126 based on Foata normal form. 0/156 useless extension candidates. Maximal degree in co-relation 471. Up to 223 conditions per place. [2023-08-30 05:48:28,347 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 18 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-30 05:48:28,347 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 95 flow [2023-08-30 05:48:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:28,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:28,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-08-30 05:48:28,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4508990318118949 [2023-08-30 05:48:28,348 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-08-30 05:48:28,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-08-30 05:48:28,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-08-30 05:48:28,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,351 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 326 transitions. [2023-08-30 05:48:28,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 95 flow [2023-08-30 05:48:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:28,352 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2023-08-30 05:48:28,352 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-30 05:48:28,352 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:48:28,353 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2023-08-30 05:48:28,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,353 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:28,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:48:28,353 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,354 INFO L85 PathProgramCache]: Analyzing trace with hash -70060903, now seen corresponding path program 1 times [2023-08-30 05:48:28,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002374487] [2023-08-30 05:48:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:28,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:28,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002374487] [2023-08-30 05:48:28,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002374487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:28,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:28,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:48:28,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479522151] [2023-08-30 05:48:28,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:28,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:48:28,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:28,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:48:28,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:48:28,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 241 [2023-08-30 05:48:28,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:28,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 241 [2023-08-30 05:48:28,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,517 INFO L130 PetriNetUnfolder]: 97/180 cut-off events. [2023-08-30 05:48:28,518 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 180 events. 97/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 696 event pairs, 93 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 370. Up to 172 conditions per place. [2023-08-30 05:48:28,518 INFO L137 encePairwiseOnDemand]: 239/241 looper letters, 17 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:48:28,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 92 flow [2023-08-30 05:48:28,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:48:28,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:48:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-30 05:48:28,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41217150760719223 [2023-08-30 05:48:28,520 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-30 05:48:28,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-30 05:48:28,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-30 05:48:28,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,522 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,522 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 298 transitions. [2023-08-30 05:48:28,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 92 flow [2023-08-30 05:48:28,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:28,523 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2023-08-30 05:48:28,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-30 05:48:28,524 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-08-30 05:48:28,524 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2023-08-30 05:48:28,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,524 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:28,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:48:28,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1375800109, now seen corresponding path program 1 times [2023-08-30 05:48:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62397204] [2023-08-30 05:48:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:28,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:28,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:28,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62397204] [2023-08-30 05:48:28,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62397204] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:28,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:28,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:48:28,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440872399] [2023-08-30 05:48:28,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:28,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:48:28,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:28,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:48:28,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:48:28,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-08-30 05:48:28,807 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,807 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:28,807 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-08-30 05:48:28,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:28,870 INFO L130 PetriNetUnfolder]: 109/187 cut-off events. [2023-08-30 05:48:28,870 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:48:28,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 187 events. 109/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 699 event pairs, 6 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 391. Up to 85 conditions per place. [2023-08-30 05:48:28,871 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-30 05:48:28,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-08-30 05:48:28,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:48:28,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:48:28,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-08-30 05:48:28,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47199170124481327 [2023-08-30 05:48:28,873 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-08-30 05:48:28,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-08-30 05:48:28,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:28,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-08-30 05:48:28,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,875 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 455 transitions. [2023-08-30 05:48:28,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-08-30 05:48:28,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:48:28,877 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2023-08-30 05:48:28,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-08-30 05:48:28,880 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-08-30 05:48:28,880 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2023-08-30 05:48:28,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:28,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:28,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:28,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:48:28,881 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:28,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:28,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1117417239, now seen corresponding path program 2 times [2023-08-30 05:48:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199691548] [2023-08-30 05:48:28,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:28,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:29,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:29,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:29,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199691548] [2023-08-30 05:48:29,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199691548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:29,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:29,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:48:29,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824256294] [2023-08-30 05:48:29,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:29,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:48:29,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:29,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:48:29,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:48:29,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-08-30 05:48:29,173 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,173 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:29,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-08-30 05:48:29,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:29,238 INFO L130 PetriNetUnfolder]: 98/172 cut-off events. [2023-08-30 05:48:29,238 INFO L131 PetriNetUnfolder]: For 19/32 co-relation queries the response was YES. [2023-08-30 05:48:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 172 events. 98/172 cut-off events. For 19/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 487 event pairs, 9 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 386. Up to 103 conditions per place. [2023-08-30 05:48:29,239 INFO L137 encePairwiseOnDemand]: 237/241 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-08-30 05:48:29,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 165 flow [2023-08-30 05:48:29,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 05:48:29,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 05:48:29,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 451 transitions. [2023-08-30 05:48:29,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4678423236514523 [2023-08-30 05:48:29,241 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 451 transitions. [2023-08-30 05:48:29,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 451 transitions. [2023-08-30 05:48:29,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:29,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 451 transitions. [2023-08-30 05:48:29,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,243 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,244 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 451 transitions. [2023-08-30 05:48:29,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 165 flow [2023-08-30 05:48:29,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:29,245 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-08-30 05:48:29,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-08-30 05:48:29,246 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-08-30 05:48:29,246 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-08-30 05:48:29,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:29,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:29,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:48:29,247 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:29,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:29,247 INFO L85 PathProgramCache]: Analyzing trace with hash -887585303, now seen corresponding path program 3 times [2023-08-30 05:48:29,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:29,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439278366] [2023-08-30 05:48:29,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:29,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:29,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:29,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:29,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439278366] [2023-08-30 05:48:29,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439278366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:29,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:29,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:48:29,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396795248] [2023-08-30 05:48:29,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:29,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:48:29,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:29,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:48:29,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:48:29,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 241 [2023-08-30 05:48:29,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:29,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 241 [2023-08-30 05:48:29,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:29,566 INFO L130 PetriNetUnfolder]: 122/214 cut-off events. [2023-08-30 05:48:29,566 INFO L131 PetriNetUnfolder]: For 81/91 co-relation queries the response was YES. [2023-08-30 05:48:29,567 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 214 events. 122/214 cut-off events. For 81/91 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 649 event pairs, 13 based on Foata normal form. 18/232 useless extension candidates. Maximal degree in co-relation 526. Up to 71 conditions per place. [2023-08-30 05:48:29,567 INFO L137 encePairwiseOnDemand]: 235/241 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-30 05:48:29,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 210 flow [2023-08-30 05:48:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:48:29,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:48:29,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2023-08-30 05:48:29,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46224066390041496 [2023-08-30 05:48:29,569 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2023-08-30 05:48:29,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2023-08-30 05:48:29,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:29,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2023-08-30 05:48:29,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,572 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,572 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 557 transitions. [2023-08-30 05:48:29,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 210 flow [2023-08-30 05:48:29,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:48:29,573 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2023-08-30 05:48:29,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-08-30 05:48:29,574 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-30 05:48:29,574 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2023-08-30 05:48:29,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:29,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:29,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:48:29,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:29,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:29,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1479768159, now seen corresponding path program 4 times [2023-08-30 05:48:29,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:29,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678213213] [2023-08-30 05:48:29,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:29,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:29,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:29,690 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:29,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678213213] [2023-08-30 05:48:29,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678213213] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:29,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:29,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:48:29,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661238528] [2023-08-30 05:48:29,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:29,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:48:29,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:29,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:48:29,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:48:29,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 241 [2023-08-30 05:48:29,713 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,713 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:29,713 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 241 [2023-08-30 05:48:29,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:29,822 INFO L130 PetriNetUnfolder]: 213/366 cut-off events. [2023-08-30 05:48:29,822 INFO L131 PetriNetUnfolder]: For 374/387 co-relation queries the response was YES. [2023-08-30 05:48:29,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 366 events. 213/366 cut-off events. For 374/387 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1333 event pairs, 13 based on Foata normal form. 27/393 useless extension candidates. Maximal degree in co-relation 1012. Up to 202 conditions per place. [2023-08-30 05:48:29,824 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 30 selfloop transitions, 3 changer transitions 24/60 dead transitions. [2023-08-30 05:48:29,824 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 368 flow [2023-08-30 05:48:29,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 05:48:29,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 05:48:29,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2023-08-30 05:48:29,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576170717249555 [2023-08-30 05:48:29,827 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2023-08-30 05:48:29,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2023-08-30 05:48:29,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:29,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2023-08-30 05:48:29,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,832 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,832 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 772 transitions. [2023-08-30 05:48:29,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 368 flow [2023-08-30 05:48:29,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 05:48:29,834 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2023-08-30 05:48:29,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2023-08-30 05:48:29,835 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-08-30 05:48:29,835 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2023-08-30 05:48:29,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.4) internal successors, (532), 5 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:29,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:29,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:48:29,836 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:29,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:29,836 INFO L85 PathProgramCache]: Analyzing trace with hash 713292988, now seen corresponding path program 1 times [2023-08-30 05:48:29,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:29,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982059528] [2023-08-30 05:48:29,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:29,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:29,957 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:29,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:29,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982059528] [2023-08-30 05:48:29,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982059528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:29,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:29,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:48:29,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434784932] [2023-08-30 05:48:29,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:48:29,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:48:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:48:29,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 241 [2023-08-30 05:48:29,989 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:29,989 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:29,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 241 [2023-08-30 05:48:29,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:30,160 INFO L130 PetriNetUnfolder]: 246/409 cut-off events. [2023-08-30 05:48:30,161 INFO L131 PetriNetUnfolder]: For 720/720 co-relation queries the response was YES. [2023-08-30 05:48:30,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 409 events. 246/409 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1274 event pairs, 0 based on Foata normal form. 20/429 useless extension candidates. Maximal degree in co-relation 1511. Up to 137 conditions per place. [2023-08-30 05:48:30,163 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 61 selfloop transitions, 17 changer transitions 8/86 dead transitions. [2023-08-30 05:48:30,163 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 599 flow [2023-08-30 05:48:30,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 05:48:30,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 05:48:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 989 transitions. [2023-08-30 05:48:30,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45597049331489165 [2023-08-30 05:48:30,166 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 989 transitions. [2023-08-30 05:48:30,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 989 transitions. [2023-08-30 05:48:30,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:30,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 989 transitions. [2023-08-30 05:48:30,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 109.88888888888889) internal successors, (989), 9 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,170 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 241.0) internal successors, (2410), 10 states have internal predecessors, (2410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,170 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 9 states and 989 transitions. [2023-08-30 05:48:30,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 599 flow [2023-08-30 05:48:30,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 570 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-08-30 05:48:30,173 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 294 flow [2023-08-30 05:48:30,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-08-30 05:48:30,174 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-08-30 05:48:30,174 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 294 flow [2023-08-30 05:48:30,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.0) internal successors, (525), 5 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:30,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:30,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:48:30,175 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:30,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:30,175 INFO L85 PathProgramCache]: Analyzing trace with hash 997634328, now seen corresponding path program 2 times [2023-08-30 05:48:30,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:30,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805557967] [2023-08-30 05:48:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:30,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:30,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805557967] [2023-08-30 05:48:30,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805557967] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:30,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:30,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:48:30,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961639503] [2023-08-30 05:48:30,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:30,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:48:30,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:48:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:48:30,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-08-30 05:48:30,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:30,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-08-30 05:48:30,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:30,503 INFO L130 PetriNetUnfolder]: 287/537 cut-off events. [2023-08-30 05:48:30,503 INFO L131 PetriNetUnfolder]: For 2643/2670 co-relation queries the response was YES. [2023-08-30 05:48:30,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 537 events. 287/537 cut-off events. For 2643/2670 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2260 event pairs, 20 based on Foata normal form. 49/584 useless extension candidates. Maximal degree in co-relation 2440. Up to 271 conditions per place. [2023-08-30 05:48:30,507 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 41 selfloop transitions, 5 changer transitions 40/94 dead transitions. [2023-08-30 05:48:30,507 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 834 flow [2023-08-30 05:48:30,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:48:30,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:48:30,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 883 transitions. [2023-08-30 05:48:30,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579875518672199 [2023-08-30 05:48:30,509 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 883 transitions. [2023-08-30 05:48:30,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 883 transitions. [2023-08-30 05:48:30,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:30,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 883 transitions. [2023-08-30 05:48:30,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.375) internal successors, (883), 8 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,513 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,513 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 294 flow. Second operand 8 states and 883 transitions. [2023-08-30 05:48:30,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 834 flow [2023-08-30 05:48:30,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 789 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 05:48:30,519 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 336 flow [2023-08-30 05:48:30,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2023-08-30 05:48:30,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-08-30 05:48:30,519 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 336 flow [2023-08-30 05:48:30,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:30,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:30,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:48:30,520 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:30,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:30,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1824714705, now seen corresponding path program 1 times [2023-08-30 05:48:30,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:30,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439526283] [2023-08-30 05:48:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439526283] [2023-08-30 05:48:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439526283] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:48:30,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:48:30,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:48:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459507003] [2023-08-30 05:48:30,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:48:30,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:48:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:48:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:48:30,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 241 [2023-08-30 05:48:30,735 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,735 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:30,735 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 241 [2023-08-30 05:48:30,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:30,897 INFO L130 PetriNetUnfolder]: 298/530 cut-off events. [2023-08-30 05:48:30,898 INFO L131 PetriNetUnfolder]: For 4458/4493 co-relation queries the response was YES. [2023-08-30 05:48:30,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2902 conditions, 530 events. 298/530 cut-off events. For 4458/4493 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2080 event pairs, 25 based on Foata normal form. 49/574 useless extension candidates. Maximal degree in co-relation 2880. Up to 317 conditions per place. [2023-08-30 05:48:30,902 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 43 selfloop transitions, 5 changer transitions 30/84 dead transitions. [2023-08-30 05:48:30,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 84 transitions, 881 flow [2023-08-30 05:48:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 05:48:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 05:48:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 873 transitions. [2023-08-30 05:48:30,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4528008298755187 [2023-08-30 05:48:30,905 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 873 transitions. [2023-08-30 05:48:30,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 873 transitions. [2023-08-30 05:48:30,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:30,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 873 transitions. [2023-08-30 05:48:30,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 109.125) internal successors, (873), 8 states have internal predecessors, (873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,909 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 241.0) internal successors, (2169), 9 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,909 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 336 flow. Second operand 8 states and 873 transitions. [2023-08-30 05:48:30,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 84 transitions, 881 flow [2023-08-30 05:48:30,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 84 transitions, 842 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-08-30 05:48:30,917 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 386 flow [2023-08-30 05:48:30,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2023-08-30 05:48:30,917 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-08-30 05:48:30,918 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 386 flow [2023-08-30 05:48:30,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 105.0) internal successors, (630), 6 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:30,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:30,918 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:30,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 05:48:30,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:30,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:30,919 INFO L85 PathProgramCache]: Analyzing trace with hash 406016123, now seen corresponding path program 3 times [2023-08-30 05:48:30,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:30,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826592197] [2023-08-30 05:48:30,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:30,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:31,127 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:31,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:31,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826592197] [2023-08-30 05:48:31,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826592197] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:31,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890339090] [2023-08-30 05:48:31,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:48:31,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:31,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:31,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:31,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 05:48:31,238 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-30 05:48:31,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:31,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:48:31,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:31,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:31,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:31,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:31,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890339090] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:31,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:31,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 05:48:31,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941736599] [2023-08-30 05:48:31,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:31,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:48:31,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:31,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:48:31,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:48:31,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 241 [2023-08-30 05:48:31,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 386 flow. Second operand has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:31,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:31,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 241 [2023-08-30 05:48:31,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:32,996 INFO L130 PetriNetUnfolder]: 766/1309 cut-off events. [2023-08-30 05:48:32,997 INFO L131 PetriNetUnfolder]: For 13813/13813 co-relation queries the response was YES. [2023-08-30 05:48:33,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7696 conditions, 1309 events. 766/1309 cut-off events. For 13813/13813 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5895 event pairs, 17 based on Foata normal form. 112/1421 useless extension candidates. Maximal degree in co-relation 7671. Up to 367 conditions per place. [2023-08-30 05:48:33,007 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 121 selfloop transitions, 49 changer transitions 132/302 dead transitions. [2023-08-30 05:48:33,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 302 transitions, 3484 flow [2023-08-30 05:48:33,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-08-30 05:48:33,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-08-30 05:48:33,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 4363 transitions. [2023-08-30 05:48:33,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310412961865244 [2023-08-30 05:48:33,017 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 4363 transitions. [2023-08-30 05:48:33,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 4363 transitions. [2023-08-30 05:48:33,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:33,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 4363 transitions. [2023-08-30 05:48:33,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 103.88095238095238) internal successors, (4363), 42 states have internal predecessors, (4363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:33,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 241.0) internal successors, (10363), 43 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:33,039 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 241.0) internal successors, (10363), 43 states have internal predecessors, (10363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:33,039 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 386 flow. Second operand 42 states and 4363 transitions. [2023-08-30 05:48:33,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 302 transitions, 3484 flow [2023-08-30 05:48:33,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 302 transitions, 3157 flow, removed 159 selfloop flow, removed 6 redundant places. [2023-08-30 05:48:33,075 INFO L231 Difference]: Finished difference. Result has 129 places, 80 transitions, 1067 flow [2023-08-30 05:48:33,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=1067, PETRI_PLACES=129, PETRI_TRANSITIONS=80} [2023-08-30 05:48:33,075 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 86 predicate places. [2023-08-30 05:48:33,075 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 80 transitions, 1067 flow [2023-08-30 05:48:33,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:33,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:33,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:33,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:33,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-30 05:48:33,281 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:33,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:33,282 INFO L85 PathProgramCache]: Analyzing trace with hash -516671809, now seen corresponding path program 2 times [2023-08-30 05:48:33,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:33,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121609245] [2023-08-30 05:48:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:33,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:33,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:33,461 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:33,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121609245] [2023-08-30 05:48:33,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121609245] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:33,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1414953482] [2023-08-30 05:48:33,462 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:48:33,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:33,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:33,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:33,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 05:48:33,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:48:33,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:33,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-30 05:48:33,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:33,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:33,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:33,873 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:33,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1414953482] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:33,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:33,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-30 05:48:33,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910229800] [2023-08-30 05:48:33,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:33,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-30 05:48:33,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-30 05:48:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-08-30 05:48:33,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 241 [2023-08-30 05:48:33,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 80 transitions, 1067 flow. Second operand has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:33,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:33,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 241 [2023-08-30 05:48:33,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:34,982 INFO L130 PetriNetUnfolder]: 977/1652 cut-off events. [2023-08-30 05:48:34,983 INFO L131 PetriNetUnfolder]: For 37620/37620 co-relation queries the response was YES. [2023-08-30 05:48:34,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11556 conditions, 1652 events. 977/1652 cut-off events. For 37620/37620 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 7681 event pairs, 37 based on Foata normal form. 86/1738 useless extension candidates. Maximal degree in co-relation 11509. Up to 449 conditions per place. [2023-08-30 05:48:34,997 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 144 selfloop transitions, 59 changer transitions 103/306 dead transitions. [2023-08-30 05:48:34,997 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 306 transitions, 4197 flow [2023-08-30 05:48:34,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-30 05:48:34,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-30 05:48:35,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 3943 transitions. [2023-08-30 05:48:35,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4305525223848002 [2023-08-30 05:48:35,002 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 3943 transitions. [2023-08-30 05:48:35,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 3943 transitions. [2023-08-30 05:48:35,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:35,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 3943 transitions. [2023-08-30 05:48:35,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 103.76315789473684) internal successors, (3943), 38 states have internal predecessors, (3943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:35,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 241.0) internal successors, (9399), 39 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:35,032 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 241.0) internal successors, (9399), 39 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:35,032 INFO L175 Difference]: Start difference. First operand has 129 places, 80 transitions, 1067 flow. Second operand 38 states and 3943 transitions. [2023-08-30 05:48:35,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 306 transitions, 4197 flow [2023-08-30 05:48:35,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 306 transitions, 2819 flow, removed 609 selfloop flow, removed 29 redundant places. [2023-08-30 05:48:35,081 INFO L231 Difference]: Finished difference. Result has 135 places, 116 transitions, 1169 flow [2023-08-30 05:48:35,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=1169, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2023-08-30 05:48:35,082 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 92 predicate places. [2023-08-30 05:48:35,082 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 1169 flow [2023-08-30 05:48:35,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 100.6) internal successors, (1509), 15 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:35,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:35,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:35,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:35,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-30 05:48:35,292 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:35,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:35,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1756267247, now seen corresponding path program 1 times [2023-08-30 05:48:35,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:35,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685640678] [2023-08-30 05:48:35,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:35,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:35,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:35,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:35,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685640678] [2023-08-30 05:48:35,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685640678] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:35,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457631427] [2023-08-30 05:48:35,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:35,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:35,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:35,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:35,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 05:48:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:35,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:48:35,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:35,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:36,224 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:36,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457631427] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:36,224 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:36,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-30 05:48:36,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575706643] [2023-08-30 05:48:36,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:36,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:48:36,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:36,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:48:36,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:48:36,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:48:36,321 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 1169 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:36,322 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:36,322 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:48:36,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:37,486 INFO L130 PetriNetUnfolder]: 970/1756 cut-off events. [2023-08-30 05:48:37,486 INFO L131 PetriNetUnfolder]: For 34551/34585 co-relation queries the response was YES. [2023-08-30 05:48:37,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10881 conditions, 1756 events. 970/1756 cut-off events. For 34551/34585 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 9440 event pairs, 0 based on Foata normal form. 108/1840 useless extension candidates. Maximal degree in co-relation 10835. Up to 360 conditions per place. [2023-08-30 05:48:37,502 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 131 selfloop transitions, 89 changer transitions 96/328 dead transitions. [2023-08-30 05:48:37,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 328 transitions, 3899 flow [2023-08-30 05:48:37,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-30 05:48:37,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-30 05:48:37,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3758 transitions. [2023-08-30 05:48:37,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331489165514062 [2023-08-30 05:48:37,507 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3758 transitions. [2023-08-30 05:48:37,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3758 transitions. [2023-08-30 05:48:37,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:37,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3758 transitions. [2023-08-30 05:48:37,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 104.38888888888889) internal successors, (3758), 36 states have internal predecessors, (3758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:37,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 241.0) internal successors, (8917), 37 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:37,519 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 241.0) internal successors, (8917), 37 states have internal predecessors, (8917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:37,519 INFO L175 Difference]: Start difference. First operand has 135 places, 116 transitions, 1169 flow. Second operand 36 states and 3758 transitions. [2023-08-30 05:48:37,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 328 transitions, 3899 flow [2023-08-30 05:48:37,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 328 transitions, 3123 flow, removed 382 selfloop flow, removed 20 redundant places. [2023-08-30 05:48:37,590 INFO L231 Difference]: Finished difference. Result has 142 places, 134 transitions, 1435 flow [2023-08-30 05:48:37,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=966, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=1435, PETRI_PLACES=142, PETRI_TRANSITIONS=134} [2023-08-30 05:48:37,591 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 99 predicate places. [2023-08-30 05:48:37,591 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 134 transitions, 1435 flow [2023-08-30 05:48:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:37,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:37,592 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:37,598 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-30 05:48:37,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:37,797 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:37,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:37,797 INFO L85 PathProgramCache]: Analyzing trace with hash 421416188, now seen corresponding path program 2 times [2023-08-30 05:48:37,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:37,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871859284] [2023-08-30 05:48:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:37,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:38,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871859284] [2023-08-30 05:48:38,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871859284] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:38,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481681903] [2023-08-30 05:48:38,012 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:48:38,012 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:38,013 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:38,015 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-30 05:48:38,089 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:48:38,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:38,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-30 05:48:38,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:38,233 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:38,233 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:38,709 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:38,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481681903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:38,710 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:38,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-08-30 05:48:38,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647908438] [2023-08-30 05:48:38,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:38,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-30 05:48:38,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:38,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-30 05:48:38,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-08-30 05:48:38,790 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:48:38,791 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 134 transitions, 1435 flow. Second operand has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:38,792 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:38,792 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:48:38,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:39,994 INFO L130 PetriNetUnfolder]: 1157/2091 cut-off events. [2023-08-30 05:48:39,994 INFO L131 PetriNetUnfolder]: For 19718/19735 co-relation queries the response was YES. [2023-08-30 05:48:40,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11911 conditions, 2091 events. 1157/2091 cut-off events. For 19718/19735 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 11101 event pairs, 20 based on Foata normal form. 99/2178 useless extension candidates. Maximal degree in co-relation 11870. Up to 390 conditions per place. [2023-08-30 05:48:40,014 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 144 selfloop transitions, 89 changer transitions 103/351 dead transitions. [2023-08-30 05:48:40,014 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 351 transitions, 4013 flow [2023-08-30 05:48:40,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-30 05:48:40,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-30 05:48:40,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3465 transitions. [2023-08-30 05:48:40,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43568464730290457 [2023-08-30 05:48:40,018 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3465 transitions. [2023-08-30 05:48:40,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3465 transitions. [2023-08-30 05:48:40,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:40,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3465 transitions. [2023-08-30 05:48:40,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 105.0) internal successors, (3465), 33 states have internal predecessors, (3465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:40,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 241.0) internal successors, (8194), 34 states have internal predecessors, (8194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:40,028 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 241.0) internal successors, (8194), 34 states have internal predecessors, (8194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:40,028 INFO L175 Difference]: Start difference. First operand has 142 places, 134 transitions, 1435 flow. Second operand 33 states and 3465 transitions. [2023-08-30 05:48:40,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 351 transitions, 4013 flow [2023-08-30 05:48:40,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 351 transitions, 3457 flow, removed 254 selfloop flow, removed 21 redundant places. [2023-08-30 05:48:40,078 INFO L231 Difference]: Finished difference. Result has 148 places, 151 transitions, 1736 flow [2023-08-30 05:48:40,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1736, PETRI_PLACES=148, PETRI_TRANSITIONS=151} [2023-08-30 05:48:40,078 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 105 predicate places. [2023-08-30 05:48:40,078 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 151 transitions, 1736 flow [2023-08-30 05:48:40,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.73684210526316) internal successors, (1914), 19 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:40,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:40,079 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:40,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:40,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-30 05:48:40,289 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:40,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:40,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1609318232, now seen corresponding path program 3 times [2023-08-30 05:48:40,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:40,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539013423] [2023-08-30 05:48:40,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:40,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:40,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:40,648 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:40,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539013423] [2023-08-30 05:48:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539013423] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [358508421] [2023-08-30 05:48:40,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:48:40,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:40,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:40,650 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:40,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-30 05:48:40,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-30 05:48:40,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:40,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:48:40,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:40,964 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:40,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:41,493 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:41,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [358508421] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:41,494 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:41,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-30 05:48:41,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878154587] [2023-08-30 05:48:41,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:41,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:48:41,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:41,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:48:41,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:48:41,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:48:41,614 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 151 transitions, 1736 flow. Second operand has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:41,614 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:41,614 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:48:41,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:43,410 INFO L130 PetriNetUnfolder]: 1514/2748 cut-off events. [2023-08-30 05:48:43,410 INFO L131 PetriNetUnfolder]: For 30910/30972 co-relation queries the response was YES. [2023-08-30 05:48:43,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17001 conditions, 2748 events. 1514/2748 cut-off events. For 30910/30972 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 15861 event pairs, 30 based on Foata normal form. 128/2846 useless extension candidates. Maximal degree in co-relation 16961. Up to 600 conditions per place. [2023-08-30 05:48:43,428 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 203 selfloop transitions, 127 changer transitions 126/469 dead transitions. [2023-08-30 05:48:43,428 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 469 transitions, 6106 flow [2023-08-30 05:48:43,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-30 05:48:43,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-30 05:48:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 5217 transitions. [2023-08-30 05:48:43,434 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43294605809128633 [2023-08-30 05:48:43,434 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 5217 transitions. [2023-08-30 05:48:43,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 5217 transitions. [2023-08-30 05:48:43,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:43,435 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 5217 transitions. [2023-08-30 05:48:43,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 104.34) internal successors, (5217), 50 states have internal predecessors, (5217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:43,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 241.0) internal successors, (12291), 51 states have internal predecessors, (12291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:43,448 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 241.0) internal successors, (12291), 51 states have internal predecessors, (12291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:43,449 INFO L175 Difference]: Start difference. First operand has 148 places, 151 transitions, 1736 flow. Second operand 50 states and 5217 transitions. [2023-08-30 05:48:43,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 469 transitions, 6106 flow [2023-08-30 05:48:43,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 469 transitions, 5661 flow, removed 205 selfloop flow, removed 13 redundant places. [2023-08-30 05:48:43,540 INFO L231 Difference]: Finished difference. Result has 181 places, 212 transitions, 2733 flow [2023-08-30 05:48:43,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=1577, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=2733, PETRI_PLACES=181, PETRI_TRANSITIONS=212} [2023-08-30 05:48:43,541 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 138 predicate places. [2023-08-30 05:48:43,541 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 212 transitions, 2733 flow [2023-08-30 05:48:43,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:43,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:43,542 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:43,548 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:43,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:43,746 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:43,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:43,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1715267220, now seen corresponding path program 4 times [2023-08-30 05:48:43,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:43,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906860463] [2023-08-30 05:48:43,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:43,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:44,058 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:44,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906860463] [2023-08-30 05:48:44,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906860463] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:44,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293877328] [2023-08-30 05:48:44,059 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:48:44,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:44,060 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:44,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-30 05:48:44,135 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:48:44,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:44,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-30 05:48:44,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:44,320 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:44,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:44,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293877328] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:44,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:44,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-30 05:48:44,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147712105] [2023-08-30 05:48:44,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:44,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-30 05:48:44,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:44,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-30 05:48:44,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2023-08-30 05:48:45,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:48:45,034 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 212 transitions, 2733 flow. Second operand has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:45,034 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:45,034 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:48:45,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:47,321 INFO L130 PetriNetUnfolder]: 2069/3829 cut-off events. [2023-08-30 05:48:47,322 INFO L131 PetriNetUnfolder]: For 54394/54415 co-relation queries the response was YES. [2023-08-30 05:48:47,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25175 conditions, 3829 events. 2069/3829 cut-off events. For 54394/54415 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 23727 event pairs, 90 based on Foata normal form. 159/3966 useless extension candidates. Maximal degree in co-relation 25129. Up to 698 conditions per place. [2023-08-30 05:48:47,363 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 271 selfloop transitions, 145 changer transitions 202/643 dead transitions. [2023-08-30 05:48:47,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 643 transitions, 8527 flow [2023-08-30 05:48:47,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-08-30 05:48:47,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-08-30 05:48:47,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 6094 transitions. [2023-08-30 05:48:47,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4359708112748605 [2023-08-30 05:48:47,371 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 6094 transitions. [2023-08-30 05:48:47,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 6094 transitions. [2023-08-30 05:48:47,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:47,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 6094 transitions. [2023-08-30 05:48:47,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 105.06896551724138) internal successors, (6094), 58 states have internal predecessors, (6094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:47,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:47,398 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 241.0) internal successors, (14219), 59 states have internal predecessors, (14219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:47,398 INFO L175 Difference]: Start difference. First operand has 181 places, 212 transitions, 2733 flow. Second operand 58 states and 6094 transitions. [2023-08-30 05:48:47,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 643 transitions, 8527 flow [2023-08-30 05:48:47,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 643 transitions, 7615 flow, removed 428 selfloop flow, removed 18 redundant places. [2023-08-30 05:48:47,615 INFO L231 Difference]: Finished difference. Result has 217 places, 277 transitions, 3739 flow [2023-08-30 05:48:47,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=2374, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=3739, PETRI_PLACES=217, PETRI_TRANSITIONS=277} [2023-08-30 05:48:47,616 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 174 predicate places. [2023-08-30 05:48:47,616 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 277 transitions, 3739 flow [2023-08-30 05:48:47,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.55) internal successors, (2011), 20 states have internal predecessors, (2011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:47,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:47,618 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:47,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-30 05:48:47,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:47,826 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:47,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:47,826 INFO L85 PathProgramCache]: Analyzing trace with hash 2030745743, now seen corresponding path program 5 times [2023-08-30 05:48:47,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:47,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692336264] [2023-08-30 05:48:47,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:47,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:48,244 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692336264] [2023-08-30 05:48:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692336264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626188437] [2023-08-30 05:48:48,245 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:48:48,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:48,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:48,246 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:48,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-30 05:48:48,325 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 05:48:48,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:48,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:48:48,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:48,712 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:48,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:49,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 1 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:49,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626188437] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:49,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:49,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-30 05:48:49,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516398733] [2023-08-30 05:48:49,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:49,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:48:49,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:49,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:48:49,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:48:49,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:48:49,779 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 277 transitions, 3739 flow. Second operand has 25 states, 25 states have (on average 100.56) internal successors, (2514), 25 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:49,779 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:49,780 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:48:49,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:48:53,582 INFO L130 PetriNetUnfolder]: 2806/5110 cut-off events. [2023-08-30 05:48:53,582 INFO L131 PetriNetUnfolder]: For 88284/88350 co-relation queries the response was YES. [2023-08-30 05:48:53,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36246 conditions, 5110 events. 2806/5110 cut-off events. For 88284/88350 co-relation queries the response was YES. Maximal size of possible extension queue 254. Compared 33290 event pairs, 64 based on Foata normal form. 196/5210 useless extension candidates. Maximal degree in co-relation 36195. Up to 1116 conditions per place. [2023-08-30 05:48:53,619 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 317 selfloop transitions, 231 changer transitions 235/807 dead transitions. [2023-08-30 05:48:53,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 807 transitions, 12241 flow [2023-08-30 05:48:53,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-08-30 05:48:53,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2023-08-30 05:48:53,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 8032 transitions. [2023-08-30 05:48:53,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328285822061756 [2023-08-30 05:48:53,627 INFO L72 ComplementDD]: Start complementDD. Operand 77 states and 8032 transitions. [2023-08-30 05:48:53,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 77 states and 8032 transitions. [2023-08-30 05:48:53,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:48:53,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 77 states and 8032 transitions. [2023-08-30 05:48:53,635 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 78 states, 77 states have (on average 104.31168831168831) internal successors, (8032), 77 states have internal predecessors, (8032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:53,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 78 states, 78 states have (on average 241.0) internal successors, (18798), 78 states have internal predecessors, (18798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:53,646 INFO L81 ComplementDD]: Finished complementDD. Result has 78 states, 78 states have (on average 241.0) internal successors, (18798), 78 states have internal predecessors, (18798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:53,646 INFO L175 Difference]: Start difference. First operand has 217 places, 277 transitions, 3739 flow. Second operand 77 states and 8032 transitions. [2023-08-30 05:48:53,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 807 transitions, 12241 flow [2023-08-30 05:48:53,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 807 transitions, 10968 flow, removed 609 selfloop flow, removed 23 redundant places. [2023-08-30 05:48:53,928 INFO L231 Difference]: Finished difference. Result has 271 places, 377 transitions, 5516 flow [2023-08-30 05:48:53,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=77, PETRI_FLOW=5516, PETRI_PLACES=271, PETRI_TRANSITIONS=377} [2023-08-30 05:48:53,929 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 228 predicate places. [2023-08-30 05:48:53,929 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 377 transitions, 5516 flow [2023-08-30 05:48:53,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.56) internal successors, (2514), 25 states have internal predecessors, (2514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:53,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:48:53,929 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:48:53,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-30 05:48:54,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:54,135 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:48:54,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:48:54,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1662703076, now seen corresponding path program 6 times [2023-08-30 05:48:54,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:48:54,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323184360] [2023-08-30 05:48:54,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:48:54,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:48:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:48:54,516 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:54,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:48:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323184360] [2023-08-30 05:48:54,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323184360] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:48:54,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890630278] [2023-08-30 05:48:54,517 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:48:54,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:48:54,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:48:54,518 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:48:54,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-30 05:48:54,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:48:54,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:48:54,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:48:54,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:48:54,970 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:54,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:48:56,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:48:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890630278] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:48:56,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:48:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-30 05:48:56,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221687312] [2023-08-30 05:48:56,053 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:48:56,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:48:56,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:48:56,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:48:56,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:48:56,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:48:56,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 377 transitions, 5516 flow. Second operand has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:48:56,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:48:56,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:48:56,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:01,660 INFO L130 PetriNetUnfolder]: 4503/7522 cut-off events. [2023-08-30 05:49:01,660 INFO L131 PetriNetUnfolder]: For 130156/130156 co-relation queries the response was YES. [2023-08-30 05:49:01,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49005 conditions, 7522 events. 4503/7522 cut-off events. For 130156/130156 co-relation queries the response was YES. Maximal size of possible extension queue 272. Compared 45701 event pairs, 223 based on Foata normal form. 238/7760 useless extension candidates. Maximal degree in co-relation 48944. Up to 1830 conditions per place. [2023-08-30 05:49:01,726 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 419 selfloop transitions, 274 changer transitions 241/934 dead transitions. [2023-08-30 05:49:01,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 934 transitions, 14186 flow [2023-08-30 05:49:01,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-08-30 05:49:01,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-08-30 05:49:01,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9037 transitions. [2023-08-30 05:49:01,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213250034966665 [2023-08-30 05:49:01,735 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9037 transitions. [2023-08-30 05:49:01,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9037 transitions. [2023-08-30 05:49:01,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:01,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9037 transitions. [2023-08-30 05:49:01,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 101.53932584269663) internal successors, (9037), 89 states have internal predecessors, (9037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:01,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:01,762 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:01,762 INFO L175 Difference]: Start difference. First operand has 271 places, 377 transitions, 5516 flow. Second operand 89 states and 9037 transitions. [2023-08-30 05:49:01,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 934 transitions, 14186 flow [2023-08-30 05:49:02,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 934 transitions, 12387 flow, removed 863 selfloop flow, removed 32 redundant places. [2023-08-30 05:49:02,132 INFO L231 Difference]: Finished difference. Result has 346 places, 461 transitions, 7074 flow [2023-08-30 05:49:02,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=4735, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=187, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=7074, PETRI_PLACES=346, PETRI_TRANSITIONS=461} [2023-08-30 05:49:02,133 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 303 predicate places. [2023-08-30 05:49:02,133 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 461 transitions, 7074 flow [2023-08-30 05:49:02,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 97.88) internal successors, (2447), 25 states have internal predecessors, (2447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:02,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:02,133 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:02,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-30 05:49:02,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-30 05:49:02,334 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:02,334 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:02,335 INFO L85 PathProgramCache]: Analyzing trace with hash -22854786, now seen corresponding path program 7 times [2023-08-30 05:49:02,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:02,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606462956] [2023-08-30 05:49:02,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:02,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:02,747 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:02,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606462956] [2023-08-30 05:49:02,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606462956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:02,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381236029] [2023-08-30 05:49:02,748 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:49:02,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:02,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:02,762 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:02,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-30 05:49:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:02,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:49:02,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:03,111 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:03,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:04,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381236029] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:04,131 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:04,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-30 05:49:04,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977343278] [2023-08-30 05:49:04,131 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:04,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:49:04,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:49:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2023-08-30 05:49:04,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:49:04,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 461 transitions, 7074 flow. Second operand has 24 states, 24 states have (on average 100.125) internal successors, (2403), 24 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:04,245 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:04,245 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:49:04,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:09,305 INFO L130 PetriNetUnfolder]: 4261/7933 cut-off events. [2023-08-30 05:49:09,305 INFO L131 PetriNetUnfolder]: For 479766/479777 co-relation queries the response was YES. [2023-08-30 05:49:09,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73952 conditions, 7933 events. 4261/7933 cut-off events. For 479766/479777 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 57327 event pairs, 168 based on Foata normal form. 327/8210 useless extension candidates. Maximal degree in co-relation 73858. Up to 1490 conditions per place. [2023-08-30 05:49:09,383 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 406 selfloop transitions, 342 changer transitions 320/1109 dead transitions. [2023-08-30 05:49:09,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1109 transitions, 19270 flow [2023-08-30 05:49:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-08-30 05:49:09,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-08-30 05:49:09,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 8299 transitions. [2023-08-30 05:49:09,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43589474237092285 [2023-08-30 05:49:09,389 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 8299 transitions. [2023-08-30 05:49:09,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 8299 transitions. [2023-08-30 05:49:09,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:09,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 8299 transitions. [2023-08-30 05:49:09,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 105.0506329113924) internal successors, (8299), 79 states have internal predecessors, (8299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:09,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 241.0) internal successors, (19280), 80 states have internal predecessors, (19280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:09,533 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 241.0) internal successors, (19280), 80 states have internal predecessors, (19280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:09,533 INFO L175 Difference]: Start difference. First operand has 346 places, 461 transitions, 7074 flow. Second operand 79 states and 8299 transitions. [2023-08-30 05:49:09,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1109 transitions, 19270 flow [2023-08-30 05:49:10,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 1109 transitions, 15820 flow, removed 1635 selfloop flow, removed 53 redundant places. [2023-08-30 05:49:10,625 INFO L231 Difference]: Finished difference. Result has 348 places, 547 transitions, 8909 flow [2023-08-30 05:49:10,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=6283, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=461, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=231, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=8909, PETRI_PLACES=348, PETRI_TRANSITIONS=547} [2023-08-30 05:49:10,625 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 305 predicate places. [2023-08-30 05:49:10,625 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 547 transitions, 8909 flow [2023-08-30 05:49:10,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 100.125) internal successors, (2403), 24 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:10,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:10,626 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:10,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-30 05:49:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:10,826 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:10,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:10,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1616310805, now seen corresponding path program 8 times [2023-08-30 05:49:10,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:10,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102261339] [2023-08-30 05:49:10,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:10,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:10,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:11,261 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:11,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:11,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102261339] [2023-08-30 05:49:11,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102261339] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:11,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285690077] [2023-08-30 05:49:11,262 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:49:11,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:11,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:11,263 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:11,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-30 05:49:11,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:49:11,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:49:11,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:49:11,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:11,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:12,843 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:12,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285690077] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:12,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:12,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2023-08-30 05:49:12,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696755739] [2023-08-30 05:49:12,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:12,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-30 05:49:12,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:12,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-30 05:49:12,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2023-08-30 05:49:12,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:49:12,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 547 transitions, 8909 flow. Second operand has 24 states, 24 states have (on average 97.79166666666667) internal successors, (2347), 24 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:12,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:12,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:49:12,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:18,880 INFO L130 PetriNetUnfolder]: 6150/10151 cut-off events. [2023-08-30 05:49:18,881 INFO L131 PetriNetUnfolder]: For 229840/229840 co-relation queries the response was YES. [2023-08-30 05:49:18,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70244 conditions, 10151 events. 6150/10151 cut-off events. For 229840/229840 co-relation queries the response was YES. Maximal size of possible extension queue 380. Compared 64306 event pairs, 407 based on Foata normal form. 310/10461 useless extension candidates. Maximal degree in co-relation 70161. Up to 3274 conditions per place. [2023-08-30 05:49:18,972 INFO L137 encePairwiseOnDemand]: 231/241 looper letters, 559 selfloop transitions, 292 changer transitions 303/1154 dead transitions. [2023-08-30 05:49:18,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 1154 transitions, 18583 flow [2023-08-30 05:49:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-08-30 05:49:18,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2023-08-30 05:49:18,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 9758 transitions. [2023-08-30 05:49:18,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42176694329183956 [2023-08-30 05:49:18,983 INFO L72 ComplementDD]: Start complementDD. Operand 96 states and 9758 transitions. [2023-08-30 05:49:18,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 96 states and 9758 transitions. [2023-08-30 05:49:18,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:18,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 96 states and 9758 transitions. [2023-08-30 05:49:18,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 97 states, 96 states have (on average 101.64583333333333) internal successors, (9758), 96 states have internal predecessors, (9758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:19,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 97 states, 97 states have (on average 241.0) internal successors, (23377), 97 states have internal predecessors, (23377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:19,004 INFO L81 ComplementDD]: Finished complementDD. Result has 97 states, 97 states have (on average 241.0) internal successors, (23377), 97 states have internal predecessors, (23377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:19,004 INFO L175 Difference]: Start difference. First operand has 348 places, 547 transitions, 8909 flow. Second operand 96 states and 9758 transitions. [2023-08-30 05:49:19,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 1154 transitions, 18583 flow [2023-08-30 05:49:19,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 1154 transitions, 16892 flow, removed 595 selfloop flow, removed 49 redundant places. [2023-08-30 05:49:19,662 INFO L231 Difference]: Finished difference. Result has 412 places, 585 transitions, 9783 flow [2023-08-30 05:49:19,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=7864, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=96, PETRI_FLOW=9783, PETRI_PLACES=412, PETRI_TRANSITIONS=585} [2023-08-30 05:49:19,662 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 369 predicate places. [2023-08-30 05:49:19,663 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 585 transitions, 9783 flow [2023-08-30 05:49:19,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 97.79166666666667) internal successors, (2347), 24 states have internal predecessors, (2347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:19,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:19,663 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:19,668 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-30 05:49:19,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-30 05:49:19,864 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:19,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:19,864 INFO L85 PathProgramCache]: Analyzing trace with hash -891136992, now seen corresponding path program 9 times [2023-08-30 05:49:19,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:19,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371924407] [2023-08-30 05:49:19,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:19,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:20,247 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:20,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371924407] [2023-08-30 05:49:20,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371924407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:20,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069075558] [2023-08-30 05:49:20,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:49:20,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:20,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:20,249 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:20,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-30 05:49:20,376 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 05:49:20,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:49:20,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-08-30 05:49:20,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:20,710 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:20,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:21,672 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:21,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069075558] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:21,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:21,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2023-08-30 05:49:21,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585823325] [2023-08-30 05:49:21,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:21,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:49:21,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:21,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:49:21,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:49:21,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:49:21,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 585 transitions, 9783 flow. Second operand has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:21,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:21,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:49:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:27,649 INFO L130 PetriNetUnfolder]: 6796/11183 cut-off events. [2023-08-30 05:49:27,649 INFO L131 PetriNetUnfolder]: For 512763/512763 co-relation queries the response was YES. [2023-08-30 05:49:27,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90290 conditions, 11183 events. 6796/11183 cut-off events. For 512763/512763 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 71764 event pairs, 567 based on Foata normal form. 196/11379 useless extension candidates. Maximal degree in co-relation 90181. Up to 4568 conditions per place. [2023-08-30 05:49:27,770 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 597 selfloop transitions, 292 changer transitions 229/1118 dead transitions. [2023-08-30 05:49:27,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 1118 transitions, 20576 flow [2023-08-30 05:49:27,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-08-30 05:49:27,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-08-30 05:49:27,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9034 transitions. [2023-08-30 05:49:27,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42118513683621617 [2023-08-30 05:49:27,775 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9034 transitions. [2023-08-30 05:49:27,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9034 transitions. [2023-08-30 05:49:27,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:27,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9034 transitions. [2023-08-30 05:49:27,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 101.50561797752809) internal successors, (9034), 89 states have internal predecessors, (9034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:27,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:27,794 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:27,794 INFO L175 Difference]: Start difference. First operand has 412 places, 585 transitions, 9783 flow. Second operand 89 states and 9034 transitions. [2023-08-30 05:49:27,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 1118 transitions, 20576 flow [2023-08-30 05:49:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 1118 transitions, 16967 flow, removed 1501 selfloop flow, removed 72 redundant places. [2023-08-30 05:49:28,784 INFO L231 Difference]: Finished difference. Result has 423 places, 668 transitions, 11037 flow [2023-08-30 05:49:28,785 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=8508, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=220, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=359, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=11037, PETRI_PLACES=423, PETRI_TRANSITIONS=668} [2023-08-30 05:49:28,785 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 380 predicate places. [2023-08-30 05:49:28,785 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 668 transitions, 11037 flow [2023-08-30 05:49:28,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 98.04) internal successors, (2451), 25 states have internal predecessors, (2451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:28,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:28,786 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:28,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-08-30 05:49:28,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-30 05:49:28,990 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:28,990 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:28,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1952264199, now seen corresponding path program 10 times [2023-08-30 05:49:28,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:28,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434149156] [2023-08-30 05:49:28,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:28,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:29,607 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:29,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434149156] [2023-08-30 05:49:29,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434149156] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:29,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196899851] [2023-08-30 05:49:29,608 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:49:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:29,609 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:29,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-30 05:49:29,705 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:49:29,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:49:29,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:49:29,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:30,099 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:31,299 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:31,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196899851] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:31,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:31,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-30 05:49:31,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912023430] [2023-08-30 05:49:31,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:31,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 05:49:31,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:31,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 05:49:31,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-08-30 05:49:31,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:49:31,442 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 668 transitions, 11037 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:31,442 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:31,442 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:49:31,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:38,913 INFO L130 PetriNetUnfolder]: 5987/11015 cut-off events. [2023-08-30 05:49:38,913 INFO L131 PetriNetUnfolder]: For 949784/949845 co-relation queries the response was YES. [2023-08-30 05:49:39,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116457 conditions, 11015 events. 5987/11015 cut-off events. For 949784/949845 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 83831 event pairs, 180 based on Foata normal form. 235/11110 useless extension candidates. Maximal degree in co-relation 116347. Up to 2562 conditions per place. [2023-08-30 05:49:39,058 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 581 selfloop transitions, 503 changer transitions 294/1423 dead transitions. [2023-08-30 05:49:39,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 1423 transitions, 29624 flow [2023-08-30 05:49:39,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-30 05:49:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-30 05:49:39,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 10120 transitions. [2023-08-30 05:49:39,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4329041365444668 [2023-08-30 05:49:39,066 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 10120 transitions. [2023-08-30 05:49:39,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 10120 transitions. [2023-08-30 05:49:39,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:39,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 10120 transitions. [2023-08-30 05:49:39,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 104.3298969072165) internal successors, (10120), 97 states have internal predecessors, (10120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:39,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:39,093 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:39,093 INFO L175 Difference]: Start difference. First operand has 423 places, 668 transitions, 11037 flow. Second operand 97 states and 10120 transitions. [2023-08-30 05:49:39,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 473 places, 1423 transitions, 29624 flow [2023-08-30 05:49:40,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 1423 transitions, 24688 flow, removed 2441 selfloop flow, removed 56 redundant places. [2023-08-30 05:49:40,488 INFO L231 Difference]: Finished difference. Result has 446 places, 846 transitions, 15593 flow [2023-08-30 05:49:40,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=10427, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=668, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=337, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=303, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=15593, PETRI_PLACES=446, PETRI_TRANSITIONS=846} [2023-08-30 05:49:40,489 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 403 predicate places. [2023-08-30 05:49:40,489 INFO L495 AbstractCegarLoop]: Abstraction has has 446 places, 846 transitions, 15593 flow [2023-08-30 05:49:40,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:40,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:40,489 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:40,493 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-30 05:49:40,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-30 05:49:40,690 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:40,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:40,690 INFO L85 PathProgramCache]: Analyzing trace with hash -785454163, now seen corresponding path program 11 times [2023-08-30 05:49:40,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:40,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367933174] [2023-08-30 05:49:40,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:40,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:40,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:41,309 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:41,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367933174] [2023-08-30 05:49:41,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367933174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:41,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345268177] [2023-08-30 05:49:41,310 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:49:41,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:41,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:41,311 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:41,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-30 05:49:41,403 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2023-08-30 05:49:41,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:49:41,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:49:41,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:41,768 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:41,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:43,359 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:43,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345268177] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:43,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:43,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-30 05:49:43,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550106623] [2023-08-30 05:49:43,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:43,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 05:49:43,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:43,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 05:49:43,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=554, Unknown=0, NotChecked=0, Total=702 [2023-08-30 05:49:43,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:49:43,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 846 transitions, 15593 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:43,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:43,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:49:43,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:49:50,171 INFO L130 PetriNetUnfolder]: 6489/12057 cut-off events. [2023-08-30 05:49:50,171 INFO L131 PetriNetUnfolder]: For 470956/471037 co-relation queries the response was YES. [2023-08-30 05:49:50,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107437 conditions, 12057 events. 6489/12057 cut-off events. For 470956/471037 co-relation queries the response was YES. Maximal size of possible extension queue 530. Compared 93300 event pairs, 274 based on Foata normal form. 219/12148 useless extension candidates. Maximal degree in co-relation 107340. Up to 3270 conditions per place. [2023-08-30 05:49:50,300 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 699 selfloop transitions, 424 changer transitions 228/1396 dead transitions. [2023-08-30 05:49:50,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 1396 transitions, 27854 flow [2023-08-30 05:49:50,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-30 05:49:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-30 05:49:50,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7515 transitions. [2023-08-30 05:49:50,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43309128630705396 [2023-08-30 05:49:50,305 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7515 transitions. [2023-08-30 05:49:50,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7515 transitions. [2023-08-30 05:49:50,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:49:50,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7515 transitions. [2023-08-30 05:49:50,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 104.375) internal successors, (7515), 72 states have internal predecessors, (7515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:50,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:50,317 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:50,317 INFO L175 Difference]: Start difference. First operand has 446 places, 846 transitions, 15593 flow. Second operand 72 states and 7515 transitions. [2023-08-30 05:49:50,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 486 places, 1396 transitions, 27854 flow [2023-08-30 05:49:51,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 1396 transitions, 25764 flow, removed 929 selfloop flow, removed 46 redundant places. [2023-08-30 05:49:51,595 INFO L231 Difference]: Finished difference. Result has 461 places, 964 transitions, 17957 flow [2023-08-30 05:49:51,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=14111, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=846, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=520, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=17957, PETRI_PLACES=461, PETRI_TRANSITIONS=964} [2023-08-30 05:49:51,595 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 418 predicate places. [2023-08-30 05:49:51,596 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 964 transitions, 17957 flow [2023-08-30 05:49:51,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:51,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:49:51,596 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:49:51,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-30 05:49:51,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-08-30 05:49:51,797 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:49:51,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:49:51,797 INFO L85 PathProgramCache]: Analyzing trace with hash 499491438, now seen corresponding path program 12 times [2023-08-30 05:49:51,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:49:51,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575817359] [2023-08-30 05:49:51,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:49:51,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:49:51,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:49:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:52,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:49:52,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575817359] [2023-08-30 05:49:52,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575817359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:49:52,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427973464] [2023-08-30 05:49:52,494 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:49:52,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:49:52,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:49:52,497 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:49:52,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-30 05:49:52,622 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-30 05:49:52,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:49:52,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:49:52,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:49:53,111 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:53,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:49:54,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:49:54,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427973464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:49:54,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:49:54,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 24 [2023-08-30 05:49:54,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661086917] [2023-08-30 05:49:54,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:49:54,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-30 05:49:54,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:49:54,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-30 05:49:54,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2023-08-30 05:49:54,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:49:54,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 964 transitions, 17957 flow. Second operand has 25 states, 25 states have (on average 100.2) internal successors, (2505), 25 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:49:54,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:49:54,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:49:54,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:50:03,076 INFO L130 PetriNetUnfolder]: 8206/15090 cut-off events. [2023-08-30 05:50:03,076 INFO L131 PetriNetUnfolder]: For 549716/549774 co-relation queries the response was YES. [2023-08-30 05:50:03,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135416 conditions, 15090 events. 8206/15090 cut-off events. For 549716/549774 co-relation queries the response was YES. Maximal size of possible extension queue 678. Compared 120035 event pairs, 512 based on Foata normal form. 284/15259 useless extension candidates. Maximal degree in co-relation 135323. Up to 3494 conditions per place. [2023-08-30 05:50:03,237 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 789 selfloop transitions, 582 changer transitions 311/1768 dead transitions. [2023-08-30 05:50:03,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 514 places, 1768 transitions, 34493 flow [2023-08-30 05:50:03,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2023-08-30 05:50:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2023-08-30 05:50:03,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 8422 transitions. [2023-08-30 05:50:03,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43682572614107884 [2023-08-30 05:50:03,242 INFO L72 ComplementDD]: Start complementDD. Operand 80 states and 8422 transitions. [2023-08-30 05:50:03,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 80 states and 8422 transitions. [2023-08-30 05:50:03,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:50:03,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 80 states and 8422 transitions. [2023-08-30 05:50:03,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 81 states, 80 states have (on average 105.275) internal successors, (8422), 80 states have internal predecessors, (8422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:03,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 81 states, 81 states have (on average 241.0) internal successors, (19521), 81 states have internal predecessors, (19521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:03,256 INFO L81 ComplementDD]: Finished complementDD. Result has 81 states, 81 states have (on average 241.0) internal successors, (19521), 81 states have internal predecessors, (19521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:03,256 INFO L175 Difference]: Start difference. First operand has 461 places, 964 transitions, 17957 flow. Second operand 80 states and 8422 transitions. [2023-08-30 05:50:03,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 514 places, 1768 transitions, 34493 flow [2023-08-30 05:50:05,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 482 places, 1768 transitions, 32427 flow, removed 946 selfloop flow, removed 32 redundant places. [2023-08-30 05:50:05,121 INFO L231 Difference]: Finished difference. Result has 506 places, 1184 transitions, 23709 flow [2023-08-30 05:50:05,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=16997, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=964, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=387, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=547, PETRI_DIFFERENCE_SUBTRAHEND_STATES=80, PETRI_FLOW=23709, PETRI_PLACES=506, PETRI_TRANSITIONS=1184} [2023-08-30 05:50:05,121 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 463 predicate places. [2023-08-30 05:50:05,122 INFO L495 AbstractCegarLoop]: Abstraction has has 506 places, 1184 transitions, 23709 flow [2023-08-30 05:50:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 100.2) internal successors, (2505), 25 states have internal predecessors, (2505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:05,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:50:05,122 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:50:05,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-30 05:50:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:05,326 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:50:05,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:50:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash 1785397735, now seen corresponding path program 13 times [2023-08-30 05:50:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:50:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083630914] [2023-08-30 05:50:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:50:05,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:50:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:05,675 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:05,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:50:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083630914] [2023-08-30 05:50:05,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083630914] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:50:05,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840258703] [2023-08-30 05:50:05,676 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:50:05,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:05,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:50:05,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:50:05,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-30 05:50:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:05,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-30 05:50:05,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:50:06,218 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:06,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:50:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:07,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1840258703] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:50:07,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:50:07,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2023-08-30 05:50:07,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505881198] [2023-08-30 05:50:07,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:50:07,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-30 05:50:07,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:50:07,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-30 05:50:07,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=556, Unknown=0, NotChecked=0, Total=702 [2023-08-30 05:50:08,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:50:08,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 1184 transitions, 23709 flow. Second operand has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:08,121 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:50:08,121 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:50:08,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:50:16,310 INFO L130 PetriNetUnfolder]: 8640/16038 cut-off events. [2023-08-30 05:50:16,310 INFO L131 PetriNetUnfolder]: For 700664/700725 co-relation queries the response was YES. [2023-08-30 05:50:16,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148693 conditions, 16038 events. 8640/16038 cut-off events. For 700664/700725 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 129739 event pairs, 704 based on Foata normal form. 169/16085 useless extension candidates. Maximal degree in co-relation 148592. Up to 4583 conditions per place. [2023-08-30 05:50:16,487 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 958 selfloop transitions, 533 changer transitions 196/1773 dead transitions. [2023-08-30 05:50:16,487 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 555 places, 1773 transitions, 36167 flow [2023-08-30 05:50:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-30 05:50:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-30 05:50:16,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7578 transitions. [2023-08-30 05:50:16,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4367219917012448 [2023-08-30 05:50:16,491 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7578 transitions. [2023-08-30 05:50:16,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7578 transitions. [2023-08-30 05:50:16,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:50:16,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7578 transitions. [2023-08-30 05:50:16,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.25) internal successors, (7578), 72 states have internal predecessors, (7578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:16,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:16,504 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 241.0) internal successors, (17593), 73 states have internal predecessors, (17593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:16,504 INFO L175 Difference]: Start difference. First operand has 506 places, 1184 transitions, 23709 flow. Second operand 72 states and 7578 transitions. [2023-08-30 05:50:16,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 555 places, 1773 transitions, 36167 flow [2023-08-30 05:50:18,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 1773 transitions, 34528 flow, removed 767 selfloop flow, removed 27 redundant places. [2023-08-30 05:50:18,622 INFO L231 Difference]: Finished difference. Result has 553 places, 1327 transitions, 27485 flow [2023-08-30 05:50:18,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=22530, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=410, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=27485, PETRI_PLACES=553, PETRI_TRANSITIONS=1327} [2023-08-30 05:50:18,624 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 510 predicate places. [2023-08-30 05:50:18,624 INFO L495 AbstractCegarLoop]: Abstraction has has 553 places, 1327 transitions, 27485 flow [2023-08-30 05:50:18,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 100.25925925925925) internal successors, (2707), 27 states have internal predecessors, (2707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:18,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:50:18,624 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:50:18,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-30 05:50:18,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-08-30 05:50:18,826 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:50:18,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:50:18,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2086970624, now seen corresponding path program 4 times [2023-08-30 05:50:18,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:50:18,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599637345] [2023-08-30 05:50:18,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:50:18,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:50:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:19,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:50:19,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599637345] [2023-08-30 05:50:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599637345] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:50:19,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147246486] [2023-08-30 05:50:19,628 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:50:19,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:19,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:50:19,630 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:50:19,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-30 05:50:19,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:50:19,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:50:19,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:50:19,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:50:20,330 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:20,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:50:21,279 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 13 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:21,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1147246486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:50:21,279 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:50:21,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:50:21,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043776417] [2023-08-30 05:50:21,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:50:21,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:50:21,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:50:21,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:50:21,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:50:21,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 241 [2023-08-30 05:50:21,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 553 places, 1327 transitions, 27485 flow. Second operand has 30 states, 30 states have (on average 101.7) internal successors, (3051), 30 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:21,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:50:21,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 241 [2023-08-30 05:50:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:50:30,637 INFO L130 PetriNetUnfolder]: 9781/18333 cut-off events. [2023-08-30 05:50:30,637 INFO L131 PetriNetUnfolder]: For 991958/992111 co-relation queries the response was YES. [2023-08-30 05:50:30,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177148 conditions, 18333 events. 9781/18333 cut-off events. For 991958/992111 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 152554 event pairs, 790 based on Foata normal form. 293/18506 useless extension candidates. Maximal degree in co-relation 177035. Up to 5546 conditions per place. [2023-08-30 05:50:31,054 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1108 selfloop transitions, 526 changer transitions 379/2099 dead transitions. [2023-08-30 05:50:31,054 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 630 places, 2099 transitions, 43730 flow [2023-08-30 05:50:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-08-30 05:50:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2023-08-30 05:50:31,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 10385 transitions. [2023-08-30 05:50:31,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44424006502117463 [2023-08-30 05:50:31,061 INFO L72 ComplementDD]: Start complementDD. Operand 97 states and 10385 transitions. [2023-08-30 05:50:31,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 97 states and 10385 transitions. [2023-08-30 05:50:31,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:50:31,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 97 states and 10385 transitions. [2023-08-30 05:50:31,069 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 98 states, 97 states have (on average 107.0618556701031) internal successors, (10385), 97 states have internal predecessors, (10385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:31,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:31,080 INFO L81 ComplementDD]: Finished complementDD. Result has 98 states, 98 states have (on average 241.0) internal successors, (23618), 98 states have internal predecessors, (23618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:31,080 INFO L175 Difference]: Start difference. First operand has 553 places, 1327 transitions, 27485 flow. Second operand 97 states and 10385 transitions. [2023-08-30 05:50:31,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 630 places, 2099 transitions, 43730 flow [2023-08-30 05:50:34,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 2099 transitions, 42707 flow, removed 468 selfloop flow, removed 32 redundant places. [2023-08-30 05:50:34,280 INFO L231 Difference]: Finished difference. Result has 632 places, 1459 transitions, 31220 flow [2023-08-30 05:50:34,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=26685, PETRI_DIFFERENCE_MINUEND_PLACES=502, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=408, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=907, PETRI_DIFFERENCE_SUBTRAHEND_STATES=97, PETRI_FLOW=31220, PETRI_PLACES=632, PETRI_TRANSITIONS=1459} [2023-08-30 05:50:34,282 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 589 predicate places. [2023-08-30 05:50:34,282 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 1459 transitions, 31220 flow [2023-08-30 05:50:34,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 101.7) internal successors, (3051), 30 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:34,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:50:34,282 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:50:34,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-30 05:50:34,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:34,484 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:50:34,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:50:34,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1395350143, now seen corresponding path program 14 times [2023-08-30 05:50:34,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:50:34,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649933045] [2023-08-30 05:50:34,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:50:34,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:50:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:50:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649933045] [2023-08-30 05:50:35,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649933045] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:50:35,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711131612] [2023-08-30 05:50:35,079 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:50:35,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:35,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:50:35,081 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:50:35,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-30 05:50:35,189 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:50:35,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:50:35,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:50:35,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:50:35,758 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:35,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:50:37,324 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:37,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711131612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:50:37,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:50:37,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 05:50:37,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079113761] [2023-08-30 05:50:37,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:50:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 05:50:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:50:37,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 05:50:37,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=203, Invalid=727, Unknown=0, NotChecked=0, Total=930 [2023-08-30 05:50:37,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:50:37,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 1459 transitions, 31220 flow. Second operand has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:37,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:50:37,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:50:37,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:50:50,227 INFO L130 PetriNetUnfolder]: 15066/25285 cut-off events. [2023-08-30 05:50:50,227 INFO L131 PetriNetUnfolder]: For 1223981/1223981 co-relation queries the response was YES. [2023-08-30 05:50:50,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227887 conditions, 25285 events. 15066/25285 cut-off events. For 1223981/1223981 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 188747 event pairs, 1645 based on Foata normal form. 296/25581 useless extension candidates. Maximal degree in co-relation 227757. Up to 9808 conditions per place. [2023-08-30 05:50:50,545 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1286 selfloop transitions, 648 changer transitions 244/2178 dead transitions. [2023-08-30 05:50:50,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 2178 transitions, 49238 flow [2023-08-30 05:50:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2023-08-30 05:50:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2023-08-30 05:50:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 9103 transitions. [2023-08-30 05:50:50,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42440207002657465 [2023-08-30 05:50:50,550 INFO L72 ComplementDD]: Start complementDD. Operand 89 states and 9103 transitions. [2023-08-30 05:50:50,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 9103 transitions. [2023-08-30 05:50:50,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:50:50,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 89 states and 9103 transitions. [2023-08-30 05:50:50,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 90 states, 89 states have (on average 102.28089887640449) internal successors, (9103), 89 states have internal predecessors, (9103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:50,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:50,564 INFO L81 ComplementDD]: Finished complementDD. Result has 90 states, 90 states have (on average 241.0) internal successors, (21690), 90 states have internal predecessors, (21690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:50,564 INFO L175 Difference]: Start difference. First operand has 632 places, 1459 transitions, 31220 flow. Second operand 89 states and 9103 transitions. [2023-08-30 05:50:50,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 2178 transitions, 49238 flow [2023-08-30 05:50:55,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 2178 transitions, 45813 flow, removed 1674 selfloop flow, removed 43 redundant places. [2023-08-30 05:50:55,140 INFO L231 Difference]: Finished difference. Result has 675 places, 1613 transitions, 35450 flow [2023-08-30 05:50:55,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=29829, PETRI_DIFFERENCE_MINUEND_PLACES=550, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=483, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=954, PETRI_DIFFERENCE_SUBTRAHEND_STATES=89, PETRI_FLOW=35450, PETRI_PLACES=675, PETRI_TRANSITIONS=1613} [2023-08-30 05:50:55,141 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 632 predicate places. [2023-08-30 05:50:55,142 INFO L495 AbstractCegarLoop]: Abstraction has has 675 places, 1613 transitions, 35450 flow [2023-08-30 05:50:55,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:55,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:50:55,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:50:55,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-30 05:50:55,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:55,348 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:50:55,348 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:50:55,348 INFO L85 PathProgramCache]: Analyzing trace with hash -2122732753, now seen corresponding path program 15 times [2023-08-30 05:50:55,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:50:55,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039978656] [2023-08-30 05:50:55,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:50:55,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:50:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:50:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:55,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:50:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039978656] [2023-08-30 05:50:55,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039978656] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:50:55,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381685016] [2023-08-30 05:50:55,872 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:50:55,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:50:55,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:50:55,885 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:50:55,891 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-30 05:50:56,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-08-30 05:50:56,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:50:56,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:50:56,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:50:56,622 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:56,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:50:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:50:59,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1381685016] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:50:59,022 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:50:59,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:50:59,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678719672] [2023-08-30 05:50:59,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:50:59,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:50:59,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:50:59,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:50:59,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:50:59,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:50:59,225 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 675 places, 1613 transitions, 35450 flow. Second operand has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:50:59,225 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:50:59,225 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:50:59,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:51:23,303 INFO L130 PetriNetUnfolder]: 17195/28806 cut-off events. [2023-08-30 05:51:23,304 INFO L131 PetriNetUnfolder]: For 1992663/1992663 co-relation queries the response was YES. [2023-08-30 05:51:23,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286749 conditions, 28806 events. 17195/28806 cut-off events. For 1992663/1992663 co-relation queries the response was YES. Maximal size of possible extension queue 1015. Compared 219130 event pairs, 1389 based on Foata normal form. 648/29454 useless extension candidates. Maximal degree in co-relation 286609. Up to 9756 conditions per place. [2023-08-30 05:51:23,713 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1361 selfloop transitions, 744 changer transitions 628/2733 dead transitions. [2023-08-30 05:51:23,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 2733 transitions, 64211 flow [2023-08-30 05:51:23,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2023-08-30 05:51:23,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2023-08-30 05:51:23,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 16706 transitions. [2023-08-30 05:51:23,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42011819439205333 [2023-08-30 05:51:23,721 INFO L72 ComplementDD]: Start complementDD. Operand 165 states and 16706 transitions. [2023-08-30 05:51:23,721 INFO L73 IsDeterministic]: Start isDeterministic. Operand 165 states and 16706 transitions. [2023-08-30 05:51:23,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:51:23,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 165 states and 16706 transitions. [2023-08-30 05:51:23,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 166 states, 165 states have (on average 101.24848484848485) internal successors, (16706), 165 states have internal predecessors, (16706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:23,749 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 166 states, 166 states have (on average 241.0) internal successors, (40006), 166 states have internal predecessors, (40006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:23,751 INFO L81 ComplementDD]: Finished complementDD. Result has 166 states, 166 states have (on average 241.0) internal successors, (40006), 166 states have internal predecessors, (40006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:23,751 INFO L175 Difference]: Start difference. First operand has 675 places, 1613 transitions, 35450 flow. Second operand 165 states and 16706 transitions. [2023-08-30 05:51:23,751 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 2733 transitions, 64211 flow [2023-08-30 05:51:30,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 2733 transitions, 60441 flow, removed 1745 selfloop flow, removed 54 redundant places. [2023-08-30 05:51:30,291 INFO L231 Difference]: Finished difference. Result has 858 places, 1747 transitions, 40221 flow [2023-08-30 05:51:30,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=33514, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1613, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=566, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_STATES=165, PETRI_FLOW=40221, PETRI_PLACES=858, PETRI_TRANSITIONS=1747} [2023-08-30 05:51:30,293 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 815 predicate places. [2023-08-30 05:51:30,293 INFO L495 AbstractCegarLoop]: Abstraction has has 858 places, 1747 transitions, 40221 flow [2023-08-30 05:51:30,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:30,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:51:30,294 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:51:30,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-08-30 05:51:30,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:51:30,499 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:51:30,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:51:30,499 INFO L85 PathProgramCache]: Analyzing trace with hash 420308987, now seen corresponding path program 16 times [2023-08-30 05:51:30,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:51:30,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466407772] [2023-08-30 05:51:30,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:51:30,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:51:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:51:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:51:31,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:51:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466407772] [2023-08-30 05:51:31,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466407772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:51:31,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660031719] [2023-08-30 05:51:31,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:51:31,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:51:31,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:51:31,073 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:51:31,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-30 05:51:31,178 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:51:31,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:51:31,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:51:31,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:51:31,788 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:51:31,788 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:51:33,378 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:51:33,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660031719] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:51:33,378 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:51:33,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 05:51:33,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061824548] [2023-08-30 05:51:33,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:51:33,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 05:51:33,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:51:33,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 05:51:33,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=738, Unknown=0, NotChecked=0, Total=930 [2023-08-30 05:51:33,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:51:33,549 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 858 places, 1747 transitions, 40221 flow. Second operand has 31 states, 31 states have (on average 100.45161290322581) internal successors, (3114), 31 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:33,549 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:51:33,549 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:51:33,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:51:48,768 INFO L130 PetriNetUnfolder]: 12138/22516 cut-off events. [2023-08-30 05:51:48,768 INFO L131 PetriNetUnfolder]: For 5885453/5885584 co-relation queries the response was YES. [2023-08-30 05:51:49,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351012 conditions, 22516 events. 12138/22516 cut-off events. For 5885453/5885584 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 191028 event pairs, 568 based on Foata normal form. 326/22552 useless extension candidates. Maximal degree in co-relation 350798. Up to 6018 conditions per place. [2023-08-30 05:51:49,242 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1189 selfloop transitions, 773 changer transitions 309/2384 dead transitions. [2023-08-30 05:51:49,242 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 837 places, 2384 transitions, 62408 flow [2023-08-30 05:51:49,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-08-30 05:51:49,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-08-30 05:51:49,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 9174 transitions. [2023-08-30 05:51:49,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43257261410788383 [2023-08-30 05:51:49,247 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 9174 transitions. [2023-08-30 05:51:49,247 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 9174 transitions. [2023-08-30 05:51:49,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:51:49,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 9174 transitions. [2023-08-30 05:51:49,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 104.25) internal successors, (9174), 88 states have internal predecessors, (9174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:49,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 241.0) internal successors, (21449), 89 states have internal predecessors, (21449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:49,262 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 241.0) internal successors, (21449), 89 states have internal predecessors, (21449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:51:49,262 INFO L175 Difference]: Start difference. First operand has 858 places, 1747 transitions, 40221 flow. Second operand 88 states and 9174 transitions. [2023-08-30 05:51:49,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 837 places, 2384 transitions, 62408 flow [2023-08-30 05:52:11,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 737 places, 2384 transitions, 56445 flow, removed 2858 selfloop flow, removed 100 redundant places. [2023-08-30 05:52:11,143 INFO L231 Difference]: Finished difference. Result has 774 places, 1841 transitions, 43587 flow [2023-08-30 05:52:11,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=38128, PETRI_DIFFERENCE_MINUEND_PLACES=650, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1747, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=634, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1061, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=43587, PETRI_PLACES=774, PETRI_TRANSITIONS=1841} [2023-08-30 05:52:11,145 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 731 predicate places. [2023-08-30 05:52:11,145 INFO L495 AbstractCegarLoop]: Abstraction has has 774 places, 1841 transitions, 43587 flow [2023-08-30 05:52:11,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 100.45161290322581) internal successors, (3114), 31 states have internal predecessors, (3114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:11,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:52:11,146 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:52:11,155 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-30 05:52:11,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:52:11,350 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:52:11,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:52:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash 878627292, now seen corresponding path program 17 times [2023-08-30 05:52:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:52:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236752217] [2023-08-30 05:52:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:52:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:52:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:52:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:11,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:52:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236752217] [2023-08-30 05:52:11,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236752217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:52:11,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561388502] [2023-08-30 05:52:11,867 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:52:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:52:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:52:11,869 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:52:11,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-30 05:52:11,980 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-08-30 05:52:11,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:52:11,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:52:11,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:52:12,599 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:12,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:52:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:14,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1561388502] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:52:14,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:52:14,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:52:14,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083269072] [2023-08-30 05:52:14,603 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:52:14,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:52:14,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:52:14,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:52:14,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=693, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:52:14,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:52:14,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 1841 transitions, 43587 flow. Second operand has 30 states, 30 states have (on average 100.1) internal successors, (3003), 30 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:14,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:52:14,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:52:14,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:52:34,212 INFO L130 PetriNetUnfolder]: 14163/26307 cut-off events. [2023-08-30 05:52:34,212 INFO L131 PetriNetUnfolder]: For 2623241/2623502 co-relation queries the response was YES. [2023-08-30 05:52:34,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324247 conditions, 26307 events. 14163/26307 cut-off events. For 2623241/2623502 co-relation queries the response was YES. Maximal size of possible extension queue 1067. Compared 228911 event pairs, 802 based on Foata normal form. 549/26642 useless extension candidates. Maximal degree in co-relation 324078. Up to 6659 conditions per place. [2023-08-30 05:52:34,654 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1382 selfloop transitions, 875 changer transitions 581/2963 dead transitions. [2023-08-30 05:52:34,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 855 places, 2963 transitions, 75979 flow [2023-08-30 05:52:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-08-30 05:52:34,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-08-30 05:52:34,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 13252 transitions. [2023-08-30 05:52:34,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364091418033327 [2023-08-30 05:52:34,660 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 13252 transitions. [2023-08-30 05:52:34,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 13252 transitions. [2023-08-30 05:52:34,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:52:34,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 13252 transitions. [2023-08-30 05:52:34,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 105.17460317460318) internal successors, (13252), 126 states have internal predecessors, (13252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:34,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:34,681 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:34,681 INFO L175 Difference]: Start difference. First operand has 774 places, 1841 transitions, 43587 flow. Second operand 126 states and 13252 transitions. [2023-08-30 05:52:34,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 855 places, 2963 transitions, 75979 flow [2023-08-30 05:52:43,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 804 places, 2963 transitions, 71926 flow, removed 1977 selfloop flow, removed 51 redundant places. [2023-08-30 05:52:43,270 INFO L231 Difference]: Finished difference. Result has 850 places, 1999 transitions, 50251 flow [2023-08-30 05:52:43,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=42598, PETRI_DIFFERENCE_MINUEND_PLACES=679, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=685, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=50251, PETRI_PLACES=850, PETRI_TRANSITIONS=1999} [2023-08-30 05:52:43,271 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 807 predicate places. [2023-08-30 05:52:43,272 INFO L495 AbstractCegarLoop]: Abstraction has has 850 places, 1999 transitions, 50251 flow [2023-08-30 05:52:43,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.1) internal successors, (3003), 30 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:43,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:52:43,272 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:52:43,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-30 05:52:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-08-30 05:52:43,477 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:52:43,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:52:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1222393217, now seen corresponding path program 18 times [2023-08-30 05:52:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:52:43,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029850205] [2023-08-30 05:52:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:52:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:52:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:52:44,080 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:44,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:52:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029850205] [2023-08-30 05:52:44,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029850205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:52:44,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2092942884] [2023-08-30 05:52:44,081 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:52:44,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:52:44,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:52:44,082 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:52:44,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-30 05:52:44,242 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2023-08-30 05:52:44,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:52:44,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:52:44,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:52:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:44,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:52:46,407 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:52:46,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2092942884] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:52:46,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:52:46,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 05:52:46,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110739166] [2023-08-30 05:52:46,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:52:46,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 05:52:46,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:52:46,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 05:52:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=739, Unknown=0, NotChecked=0, Total=930 [2023-08-30 05:52:46,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:52:46,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 850 places, 1999 transitions, 50251 flow. Second operand has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:52:46,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:52:46,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:52:46,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:53:09,490 INFO L130 PetriNetUnfolder]: 20195/33570 cut-off events. [2023-08-30 05:53:09,490 INFO L131 PetriNetUnfolder]: For 2781190/2781190 co-relation queries the response was YES. [2023-08-30 05:53:10,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350406 conditions, 33570 events. 20195/33570 cut-off events. For 2781190/2781190 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 257527 event pairs, 2065 based on Foata normal form. 506/34076 useless extension candidates. Maximal degree in co-relation 350219. Up to 14762 conditions per place. [2023-08-30 05:53:10,190 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1628 selfloop transitions, 679 changer transitions 447/2754 dead transitions. [2023-08-30 05:53:10,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 917 places, 2754 transitions, 71835 flow [2023-08-30 05:53:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2023-08-30 05:53:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2023-08-30 05:53:10,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 11852 transitions. [2023-08-30 05:53:10,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42032840373089336 [2023-08-30 05:53:10,196 INFO L72 ComplementDD]: Start complementDD. Operand 117 states and 11852 transitions. [2023-08-30 05:53:10,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 117 states and 11852 transitions. [2023-08-30 05:53:10,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:53:10,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 117 states and 11852 transitions. [2023-08-30 05:53:10,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 118 states, 117 states have (on average 101.2991452991453) internal successors, (11852), 117 states have internal predecessors, (11852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:10,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 118 states, 118 states have (on average 241.0) internal successors, (28438), 118 states have internal predecessors, (28438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:10,215 INFO L81 ComplementDD]: Finished complementDD. Result has 118 states, 118 states have (on average 241.0) internal successors, (28438), 118 states have internal predecessors, (28438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:10,215 INFO L175 Difference]: Start difference. First operand has 850 places, 1999 transitions, 50251 flow. Second operand 117 states and 11852 transitions. [2023-08-30 05:53:10,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 917 places, 2754 transitions, 71835 flow [2023-08-30 05:53:24,612 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 857 places, 2754 transitions, 66303 flow, removed 1848 selfloop flow, removed 60 redundant places. [2023-08-30 05:53:24,653 INFO L231 Difference]: Finished difference. Result has 925 places, 2033 transitions, 49514 flow [2023-08-30 05:53:24,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=45832, PETRI_DIFFERENCE_MINUEND_PLACES=741, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1999, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1392, PETRI_DIFFERENCE_SUBTRAHEND_STATES=117, PETRI_FLOW=49514, PETRI_PLACES=925, PETRI_TRANSITIONS=2033} [2023-08-30 05:53:24,655 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 882 predicate places. [2023-08-30 05:53:24,655 INFO L495 AbstractCegarLoop]: Abstraction has has 925 places, 2033 transitions, 49514 flow [2023-08-30 05:53:24,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.70967741935483) internal successors, (3029), 31 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:24,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:53:24,656 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:53:24,661 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-08-30 05:53:24,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-08-30 05:53:24,861 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:53:24,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:53:24,862 INFO L85 PathProgramCache]: Analyzing trace with hash -335942442, now seen corresponding path program 19 times [2023-08-30 05:53:24,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:53:24,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34809853] [2023-08-30 05:53:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:53:24,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:53:24,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:53:25,315 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:53:25,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:53:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34809853] [2023-08-30 05:53:25,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34809853] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:53:25,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372678545] [2023-08-30 05:53:25,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:53:25,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:53:25,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:53:25,317 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:53:25,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-30 05:53:25,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:53:25,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:53:25,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:53:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:53:25,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:53:28,061 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:53:28,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372678545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:53:28,061 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:53:28,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:53:28,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806966902] [2023-08-30 05:53:28,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:53:28,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:53:28,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:53:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:53:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:53:28,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:53:28,214 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 925 places, 2033 transitions, 49514 flow. Second operand has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:28,215 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:53:28,215 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:53:28,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:53:49,774 INFO L130 PetriNetUnfolder]: 14745/27185 cut-off events. [2023-08-30 05:53:49,774 INFO L131 PetriNetUnfolder]: For 6123979/6124120 co-relation queries the response was YES. [2023-08-30 05:53:50,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408533 conditions, 27185 events. 14745/27185 cut-off events. For 6123979/6124120 co-relation queries the response was YES. Maximal size of possible extension queue 1180. Compared 236627 event pairs, 868 based on Foata normal form. 437/27296 useless extension candidates. Maximal degree in co-relation 408312. Up to 8182 conditions per place. [2023-08-30 05:53:50,385 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1535 selfloop transitions, 772 changer transitions 464/2910 dead transitions. [2023-08-30 05:53:50,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 2910 transitions, 82555 flow [2023-08-30 05:53:50,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2023-08-30 05:53:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2023-08-30 05:53:50,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 11773 transitions. [2023-08-30 05:53:50,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4323063929791062 [2023-08-30 05:53:50,392 INFO L72 ComplementDD]: Start complementDD. Operand 113 states and 11773 transitions. [2023-08-30 05:53:50,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 113 states and 11773 transitions. [2023-08-30 05:53:50,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:53:50,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 113 states and 11773 transitions. [2023-08-30 05:53:50,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 114 states, 113 states have (on average 104.1858407079646) internal successors, (11773), 113 states have internal predecessors, (11773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:50,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 114 states, 114 states have (on average 241.0) internal successors, (27474), 114 states have internal predecessors, (27474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:50,413 INFO L81 ComplementDD]: Finished complementDD. Result has 114 states, 114 states have (on average 241.0) internal successors, (27474), 114 states have internal predecessors, (27474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:53:50,413 INFO L175 Difference]: Start difference. First operand has 925 places, 2033 transitions, 49514 flow. Second operand 113 states and 11773 transitions. [2023-08-30 05:53:50,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 2910 transitions, 82555 flow [2023-08-30 05:54:15,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 2910 transitions, 76283 flow, removed 3045 selfloop flow, removed 85 redundant places. [2023-08-30 05:54:15,245 INFO L231 Difference]: Finished difference. Result has 929 places, 2167 transitions, 55237 flow [2023-08-30 05:54:15,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=48042, PETRI_DIFFERENCE_MINUEND_PLACES=769, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2033, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=614, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=113, PETRI_FLOW=55237, PETRI_PLACES=929, PETRI_TRANSITIONS=2167} [2023-08-30 05:54:15,247 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 886 predicate places. [2023-08-30 05:54:15,247 INFO L495 AbstractCegarLoop]: Abstraction has has 929 places, 2167 transitions, 55237 flow [2023-08-30 05:54:15,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:54:15,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:54:15,247 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:54:15,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-08-30 05:54:15,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:54:15,448 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:54:15,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:54:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash -1956957301, now seen corresponding path program 20 times [2023-08-30 05:54:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:54:15,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200499991] [2023-08-30 05:54:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:54:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:54:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:54:16,178 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:54:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:54:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200499991] [2023-08-30 05:54:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200499991] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:54:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721317737] [2023-08-30 05:54:16,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 05:54:16,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:54:16,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:54:16,180 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:54:16,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-30 05:54:16,308 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 05:54:16,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:54:16,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:54:16,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:54:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:54:16,940 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:54:19,207 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:54:19,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721317737] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:54:19,208 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:54:19,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:54:19,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804648708] [2023-08-30 05:54:19,208 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:54:19,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:54:19,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:54:19,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:54:19,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:54:19,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:54:19,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 929 places, 2167 transitions, 55237 flow. Second operand has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:54:19,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:54:19,349 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:54:19,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:54:49,108 INFO L130 PetriNetUnfolder]: 23126/38311 cut-off events. [2023-08-30 05:54:49,108 INFO L131 PetriNetUnfolder]: For 3430093/3430093 co-relation queries the response was YES. [2023-08-30 05:54:50,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412769 conditions, 38311 events. 23126/38311 cut-off events. For 3430093/3430093 co-relation queries the response was YES. Maximal size of possible extension queue 1355. Compared 300338 event pairs, 3287 based on Foata normal form. 440/38751 useless extension candidates. Maximal degree in co-relation 412563. Up to 18706 conditions per place. [2023-08-30 05:54:50,462 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 1865 selfloop transitions, 709 changer transitions 454/3028 dead transitions. [2023-08-30 05:54:50,463 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1003 places, 3028 transitions, 83226 flow [2023-08-30 05:54:50,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-08-30 05:54:50,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-08-30 05:54:50,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 12765 transitions. [2023-08-30 05:54:50,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4203714680893104 [2023-08-30 05:54:50,469 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 12765 transitions. [2023-08-30 05:54:50,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 12765 transitions. [2023-08-30 05:54:50,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:54:50,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 12765 transitions. [2023-08-30 05:54:50,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 101.30952380952381) internal successors, (12765), 126 states have internal predecessors, (12765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:54:50,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:54:50,489 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 241.0) internal successors, (30607), 127 states have internal predecessors, (30607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:54:50,489 INFO L175 Difference]: Start difference. First operand has 929 places, 2167 transitions, 55237 flow. Second operand 126 states and 12765 transitions. [2023-08-30 05:54:50,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1003 places, 3028 transitions, 83226 flow [2023-08-30 05:55:16,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 945 places, 3028 transitions, 79404 flow, removed 1838 selfloop flow, removed 58 redundant places. [2023-08-30 05:55:16,233 INFO L231 Difference]: Finished difference. Result has 1031 places, 2294 transitions, 60146 flow [2023-08-30 05:55:16,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=53055, PETRI_DIFFERENCE_MINUEND_PLACES=820, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1545, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=60146, PETRI_PLACES=1031, PETRI_TRANSITIONS=2294} [2023-08-30 05:55:16,235 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 988 predicate places. [2023-08-30 05:55:16,235 INFO L495 AbstractCegarLoop]: Abstraction has has 1031 places, 2294 transitions, 60146 flow [2023-08-30 05:55:16,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 97.53333333333333) internal successors, (2926), 30 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:55:16,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:55:16,236 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:55:16,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-30 05:55:16,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:55:16,442 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:55:16,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:55:16,442 INFO L85 PathProgramCache]: Analyzing trace with hash 2106651456, now seen corresponding path program 21 times [2023-08-30 05:55:16,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:55:16,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047367525] [2023-08-30 05:55:16,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:55:16,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:55:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:55:17,029 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:55:17,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:55:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047367525] [2023-08-30 05:55:17,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047367525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:55:17,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113867771] [2023-08-30 05:55:17,029 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-30 05:55:17,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:55:17,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:55:17,030 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:55:17,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-30 05:55:17,214 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-30 05:55:17,214 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:55:17,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:55:17,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:55:17,825 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:55:17,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:55:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 7 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:55:19,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2113867771] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:55:19,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:55:19,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:55:19,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548249409] [2023-08-30 05:55:19,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:55:19,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:55:19,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:55:19,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:55:19,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:55:20,051 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:55:20,052 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1031 places, 2294 transitions, 60146 flow. Second operand has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:55:20,052 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:55:20,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:55:20,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:55:45,146 INFO L130 PetriNetUnfolder]: 16912/31148 cut-off events. [2023-08-30 05:55:45,146 INFO L131 PetriNetUnfolder]: For 8225439/8225584 co-relation queries the response was YES. [2023-08-30 05:55:46,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508640 conditions, 31148 events. 16912/31148 cut-off events. For 8225439/8225584 co-relation queries the response was YES. Maximal size of possible extension queue 1337. Compared 277403 event pairs, 928 based on Foata normal form. 446/31218 useless extension candidates. Maximal degree in co-relation 508392. Up to 9805 conditions per place. [2023-08-30 05:55:46,309 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1707 selfloop transitions, 927 changer transitions 453/3222 dead transitions. [2023-08-30 05:55:46,309 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1058 places, 3222 transitions, 99295 flow [2023-08-30 05:55:46,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-08-30 05:55:46,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2023-08-30 05:55:46,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 10631 transitions. [2023-08-30 05:55:46,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432470913676674 [2023-08-30 05:55:46,316 INFO L72 ComplementDD]: Start complementDD. Operand 102 states and 10631 transitions. [2023-08-30 05:55:46,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 102 states and 10631 transitions. [2023-08-30 05:55:46,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:55:46,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 102 states and 10631 transitions. [2023-08-30 05:55:46,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 103 states, 102 states have (on average 104.22549019607843) internal successors, (10631), 102 states have internal predecessors, (10631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:55:46,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 103 states, 103 states have (on average 241.0) internal successors, (24823), 103 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:55:46,337 INFO L81 ComplementDD]: Finished complementDD. Result has 103 states, 103 states have (on average 241.0) internal successors, (24823), 103 states have internal predecessors, (24823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:55:46,337 INFO L175 Difference]: Start difference. First operand has 1031 places, 2294 transitions, 60146 flow. Second operand 102 states and 10631 transitions. [2023-08-30 05:55:46,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1058 places, 3222 transitions, 99295 flow [2023-08-30 05:56:17,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 978 places, 3222 transitions, 92449 flow, removed 3378 selfloop flow, removed 80 redundant places. [2023-08-30 05:56:17,637 INFO L231 Difference]: Finished difference. Result has 1024 places, 2513 transitions, 69629 flow [2023-08-30 05:56:17,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=58374, PETRI_DIFFERENCE_MINUEND_PLACES=877, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=702, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1530, PETRI_DIFFERENCE_SUBTRAHEND_STATES=102, PETRI_FLOW=69629, PETRI_PLACES=1024, PETRI_TRANSITIONS=2513} [2023-08-30 05:56:17,639 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 981 predicate places. [2023-08-30 05:56:17,639 INFO L495 AbstractCegarLoop]: Abstraction has has 1024 places, 2513 transitions, 69629 flow [2023-08-30 05:56:17,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 99.96666666666667) internal successors, (2999), 30 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:17,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:56:17,639 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:56:17,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-30 05:56:17,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-08-30 05:56:17,840 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:56:17,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:56:17,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1202561805, now seen corresponding path program 22 times [2023-08-30 05:56:17,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:56:17,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132148680] [2023-08-30 05:56:17,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:56:17,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:56:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:56:18,299 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:18,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:56:18,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132148680] [2023-08-30 05:56:18,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132148680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:56:18,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44914729] [2023-08-30 05:56:18,300 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-30 05:56:18,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:56:18,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:56:18,301 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:56:18,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-08-30 05:56:18,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-30 05:56:18,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:56:18,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:56:18,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:56:18,958 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:18,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:56:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:56:21,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44914729] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:56:21,239 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:56:21,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:56:21,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918956862] [2023-08-30 05:56:21,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:56:21,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:56:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:56:21,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:56:21,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=688, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:56:21,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:56:21,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1024 places, 2513 transitions, 69629 flow. Second operand has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:21,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:56:21,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:56:21,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:56:47,676 INFO L130 PetriNetUnfolder]: 17990/33078 cut-off events. [2023-08-30 05:56:47,676 INFO L131 PetriNetUnfolder]: For 5059024/5059161 co-relation queries the response was YES. [2023-08-30 05:56:48,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 467357 conditions, 33078 events. 17990/33078 cut-off events. For 5059024/5059161 co-relation queries the response was YES. Maximal size of possible extension queue 1409. Compared 296590 event pairs, 984 based on Foata normal form. 429/33111 useless extension candidates. Maximal degree in co-relation 467124. Up to 10841 conditions per place. [2023-08-30 05:56:48,683 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 1894 selfloop transitions, 949 changer transitions 427/3403 dead transitions. [2023-08-30 05:56:48,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1078 places, 3403 transitions, 104166 flow [2023-08-30 05:56:48,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2023-08-30 05:56:48,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2023-08-30 05:56:48,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 10528 transitions. [2023-08-30 05:56:48,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43252126042479766 [2023-08-30 05:56:48,689 INFO L72 ComplementDD]: Start complementDD. Operand 101 states and 10528 transitions. [2023-08-30 05:56:48,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 101 states and 10528 transitions. [2023-08-30 05:56:48,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:56:48,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 101 states and 10528 transitions. [2023-08-30 05:56:48,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 102 states, 101 states have (on average 104.23762376237623) internal successors, (10528), 101 states have internal predecessors, (10528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:48,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 102 states, 102 states have (on average 241.0) internal successors, (24582), 102 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:48,707 INFO L81 ComplementDD]: Finished complementDD. Result has 102 states, 102 states have (on average 241.0) internal successors, (24582), 102 states have internal predecessors, (24582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:56:48,707 INFO L175 Difference]: Start difference. First operand has 1024 places, 2513 transitions, 69629 flow. Second operand 101 states and 10528 transitions. [2023-08-30 05:56:48,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1078 places, 3403 transitions, 104166 flow [2023-08-30 05:57:12,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1028 places, 3403 transitions, 99588 flow, removed 2225 selfloop flow, removed 50 redundant places. [2023-08-30 05:57:12,450 INFO L231 Difference]: Finished difference. Result has 1063 places, 2701 transitions, 78021 flow [2023-08-30 05:57:12,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=67356, PETRI_DIFFERENCE_MINUEND_PLACES=928, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=737, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1714, PETRI_DIFFERENCE_SUBTRAHEND_STATES=101, PETRI_FLOW=78021, PETRI_PLACES=1063, PETRI_TRANSITIONS=2701} [2023-08-30 05:57:12,452 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1020 predicate places. [2023-08-30 05:57:12,452 INFO L495 AbstractCegarLoop]: Abstraction has has 1063 places, 2701 transitions, 78021 flow [2023-08-30 05:57:12,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:12,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:57:12,453 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:57:12,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-08-30 05:57:12,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-08-30 05:57:12,653 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:57:12,653 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:57:12,653 INFO L85 PathProgramCache]: Analyzing trace with hash -585625454, now seen corresponding path program 23 times [2023-08-30 05:57:12,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:57:12,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875456071] [2023-08-30 05:57:12,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:57:12,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:57:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:57:13,195 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:13,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:57:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875456071] [2023-08-30 05:57:13,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875456071] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:57:13,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [373065061] [2023-08-30 05:57:13,195 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-30 05:57:13,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:57:13,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:57:13,196 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:57:13,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-08-30 05:57:13,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-08-30 05:57:13,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:57:13,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:57:13,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:57:13,870 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:13,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:57:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 1 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:57:15,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [373065061] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:57:15,313 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:57:15,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:57:15,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247445252] [2023-08-30 05:57:15,313 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:57:15,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:57:15,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:57:15,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:57:15,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=682, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:57:15,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:57:15,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1063 places, 2701 transitions, 78021 flow. Second operand has 30 states, 30 states have (on average 100.26666666666667) internal successors, (3008), 30 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:15,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:57:15,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:57:15,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:57:42,394 INFO L130 PetriNetUnfolder]: 18655/34485 cut-off events. [2023-08-30 05:57:42,394 INFO L131 PetriNetUnfolder]: For 4514052/4514257 co-relation queries the response was YES. [2023-08-30 05:57:43,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478544 conditions, 34485 events. 18655/34485 cut-off events. For 4514052/4514257 co-relation queries the response was YES. Maximal size of possible extension queue 1440. Compared 312544 event pairs, 1640 based on Foata normal form. 299/34514 useless extension candidates. Maximal degree in co-relation 478312. Up to 12530 conditions per place. [2023-08-30 05:57:43,450 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 2017 selfloop transitions, 828 changer transitions 409/3465 dead transitions. [2023-08-30 05:57:43,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1110 places, 3465 transitions, 106491 flow [2023-08-30 05:57:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-08-30 05:57:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-08-30 05:57:43,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 9565 transitions. [2023-08-30 05:57:43,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43614062286261457 [2023-08-30 05:57:43,456 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 9565 transitions. [2023-08-30 05:57:43,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 9565 transitions. [2023-08-30 05:57:43,458 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:57:43,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 9565 transitions. [2023-08-30 05:57:43,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 105.10989010989012) internal successors, (9565), 91 states have internal predecessors, (9565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 241.0) internal successors, (22172), 92 states have internal predecessors, (22172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,473 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 241.0) internal successors, (22172), 92 states have internal predecessors, (22172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:57:43,473 INFO L175 Difference]: Start difference. First operand has 1063 places, 2701 transitions, 78021 flow. Second operand 91 states and 9565 transitions. [2023-08-30 05:57:43,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1110 places, 3465 transitions, 106491 flow [2023-08-30 05:58:05,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1062 places, 3465 transitions, 101919 flow, removed 2203 selfloop flow, removed 48 redundant places. [2023-08-30 05:58:05,568 INFO L231 Difference]: Finished difference. Result has 1098 places, 2808 transitions, 82459 flow [2023-08-30 05:58:05,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=75627, PETRI_DIFFERENCE_MINUEND_PLACES=972, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2701, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=696, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1965, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=82459, PETRI_PLACES=1098, PETRI_TRANSITIONS=2808} [2023-08-30 05:58:05,570 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1055 predicate places. [2023-08-30 05:58:05,570 INFO L495 AbstractCegarLoop]: Abstraction has has 1098 places, 2808 transitions, 82459 flow [2023-08-30 05:58:05,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.26666666666667) internal successors, (3008), 30 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:05,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:58:05,571 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:58:05,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-08-30 05:58:05,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-08-30 05:58:05,777 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:58:05,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:58:05,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2130179064, now seen corresponding path program 24 times [2023-08-30 05:58:05,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:58:05,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019699442] [2023-08-30 05:58:05,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:58:05,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:58:05,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:58:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 3 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:58:06,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:58:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019699442] [2023-08-30 05:58:06,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019699442] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:58:06,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818252192] [2023-08-30 05:58:06,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-30 05:58:06,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:58:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:58:06,291 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:58:06,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-08-30 05:58:06,481 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-08-30 05:58:06,481 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 05:58:06,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:58:06,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:58:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:58:07,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:58:09,089 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:58:09,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818252192] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:58:09,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:58:09,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-30 05:58:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064361668] [2023-08-30 05:58:09,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:58:09,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-30 05:58:09,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:58:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-30 05:58:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=728, Unknown=0, NotChecked=0, Total=930 [2023-08-30 05:58:09,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 05:58:09,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1098 places, 2808 transitions, 82459 flow. Second operand has 31 states, 31 states have (on average 97.83870967741936) internal successors, (3033), 31 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:09,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:58:09,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 05:58:09,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:58:49,040 INFO L130 PetriNetUnfolder]: 28578/47291 cut-off events. [2023-08-30 05:58:49,040 INFO L131 PetriNetUnfolder]: For 4521163/4521163 co-relation queries the response was YES. [2023-08-30 05:58:50,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 543937 conditions, 47291 events. 28578/47291 cut-off events. For 4521163/4521163 co-relation queries the response was YES. Maximal size of possible extension queue 1647. Compared 381962 event pairs, 4181 based on Foata normal form. 460/47751 useless extension candidates. Maximal degree in co-relation 543697. Up to 24668 conditions per place. [2023-08-30 05:58:51,259 INFO L137 encePairwiseOnDemand]: 232/241 looper letters, 2336 selfloop transitions, 888 changer transitions 414/3638 dead transitions. [2023-08-30 05:58:51,259 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1187 places, 3638 transitions, 108721 flow [2023-08-30 05:58:51,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2023-08-30 05:58:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2023-08-30 05:58:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 13405 transitions. [2023-08-30 05:58:51,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4213818684773042 [2023-08-30 05:58:51,265 INFO L72 ComplementDD]: Start complementDD. Operand 132 states and 13405 transitions. [2023-08-30 05:58:51,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 132 states and 13405 transitions. [2023-08-30 05:58:51,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:58:51,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 132 states and 13405 transitions. [2023-08-30 05:58:51,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 133 states, 132 states have (on average 101.5530303030303) internal successors, (13405), 132 states have internal predecessors, (13405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:51,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 133 states, 133 states have (on average 241.0) internal successors, (32053), 133 states have internal predecessors, (32053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:51,287 INFO L81 ComplementDD]: Finished complementDD. Result has 133 states, 133 states have (on average 241.0) internal successors, (32053), 133 states have internal predecessors, (32053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:58:51,288 INFO L175 Difference]: Start difference. First operand has 1098 places, 2808 transitions, 82459 flow. Second operand 132 states and 13405 transitions. [2023-08-30 05:58:51,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1187 places, 3638 transitions, 108721 flow [2023-08-30 05:59:17,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1146 places, 3638 transitions, 104746 flow, removed 1358 selfloop flow, removed 41 redundant places. [2023-08-30 05:59:18,026 INFO L231 Difference]: Finished difference. Result has 1217 places, 2865 transitions, 84314 flow [2023-08-30 05:59:18,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=79385, PETRI_DIFFERENCE_MINUEND_PLACES=1015, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2808, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=780, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2017, PETRI_DIFFERENCE_SUBTRAHEND_STATES=132, PETRI_FLOW=84314, PETRI_PLACES=1217, PETRI_TRANSITIONS=2865} [2023-08-30 05:59:18,028 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1174 predicate places. [2023-08-30 05:59:18,028 INFO L495 AbstractCegarLoop]: Abstraction has has 1217 places, 2865 transitions, 84314 flow [2023-08-30 05:59:18,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 97.83870967741936) internal successors, (3033), 31 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:59:18,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:59:18,029 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:59:18,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-08-30 05:59:18,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:59:18,229 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:59:18,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:59:18,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1419885518, now seen corresponding path program 25 times [2023-08-30 05:59:18,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:59:18,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266366613] [2023-08-30 05:59:18,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:59:18,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:59:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:18,821 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:59:18,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:59:18,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266366613] [2023-08-30 05:59:18,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266366613] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 05:59:18,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [198334902] [2023-08-30 05:59:18,822 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-30 05:59:18,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 05:59:18,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:59:18,823 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 05:59:18,823 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-08-30 05:59:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:59:18,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 05:59:18,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 05:59:19,496 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:59:19,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 05:59:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:59:21,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [198334902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 05:59:21,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 05:59:21,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 05:59:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000123628] [2023-08-30 05:59:21,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 05:59:21,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 05:59:21,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:59:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 05:59:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=687, Unknown=0, NotChecked=0, Total=870 [2023-08-30 05:59:22,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 241 [2023-08-30 05:59:22,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1217 places, 2865 transitions, 84314 flow. Second operand has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:59:22,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:59:22,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 241 [2023-08-30 05:59:22,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:59:57,421 INFO L130 PetriNetUnfolder]: 20188/37504 cut-off events. [2023-08-30 05:59:57,421 INFO L131 PetriNetUnfolder]: For 9630305/9630478 co-relation queries the response was YES. [2023-08-30 05:59:59,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 619168 conditions, 37504 events. 20188/37504 cut-off events. For 9630305/9630478 co-relation queries the response was YES. Maximal size of possible extension queue 1534. Compared 345635 event pairs, 1512 based on Foata normal form. 395/37647 useless extension candidates. Maximal degree in co-relation 618875. Up to 12743 conditions per place. [2023-08-30 05:59:59,736 INFO L137 encePairwiseOnDemand]: 234/241 looper letters, 2122 selfloop transitions, 1019 changer transitions 463/3815 dead transitions. [2023-08-30 05:59:59,737 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1246 places, 3815 transitions, 121893 flow [2023-08-30 05:59:59,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2023-08-30 05:59:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2023-08-30 05:59:59,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 11042 transitions. [2023-08-30 05:59:59,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43635645129421063 [2023-08-30 05:59:59,745 INFO L72 ComplementDD]: Start complementDD. Operand 105 states and 11042 transitions. [2023-08-30 05:59:59,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 105 states and 11042 transitions. [2023-08-30 05:59:59,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:59:59,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 105 states and 11042 transitions. [2023-08-30 05:59:59,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 106 states, 105 states have (on average 105.16190476190476) internal successors, (11042), 105 states have internal predecessors, (11042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:59:59,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 106 states, 106 states have (on average 241.0) internal successors, (25546), 106 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:59:59,772 INFO L81 ComplementDD]: Finished complementDD. Result has 106 states, 106 states have (on average 241.0) internal successors, (25546), 106 states have internal predecessors, (25546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:59:59,772 INFO L175 Difference]: Start difference. First operand has 1217 places, 2865 transitions, 84314 flow. Second operand 105 states and 11042 transitions. [2023-08-30 05:59:59,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1246 places, 3815 transitions, 121893 flow [2023-08-30 06:00:29,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1149 places, 3815 transitions, 115886 flow, removed 2870 selfloop flow, removed 97 redundant places. [2023-08-30 06:00:29,178 INFO L231 Difference]: Finished difference. Result has 1187 places, 3026 transitions, 93193 flow [2023-08-30 06:00:29,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=82759, PETRI_DIFFERENCE_MINUEND_PLACES=1045, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=843, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1994, PETRI_DIFFERENCE_SUBTRAHEND_STATES=105, PETRI_FLOW=93193, PETRI_PLACES=1187, PETRI_TRANSITIONS=3026} [2023-08-30 06:00:29,181 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1144 predicate places. [2023-08-30 06:00:29,181 INFO L495 AbstractCegarLoop]: Abstraction has has 1187 places, 3026 transitions, 93193 flow [2023-08-30 06:00:29,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 100.06666666666666) internal successors, (3002), 30 states have internal predecessors, (3002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:00:29,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 06:00:29,182 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 06:00:29,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-08-30 06:00:29,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:00:29,383 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 06:00:29,383 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 06:00:29,383 INFO L85 PathProgramCache]: Analyzing trace with hash 96326771, now seen corresponding path program 26 times [2023-08-30 06:00:29,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 06:00:29,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1654092608] [2023-08-30 06:00:29,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 06:00:29,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 06:00:29,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 06:00:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:00:29,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 06:00:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1654092608] [2023-08-30 06:00:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1654092608] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 06:00:29,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116306193] [2023-08-30 06:00:29,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 06:00:29,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 06:00:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 06:00:29,895 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 06:00:29,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-08-30 06:00:30,061 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-30 06:00:30,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 06:00:30,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-30 06:00:30,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 06:00:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:00:30,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 06:00:32,775 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 06:00:32,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116306193] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 06:00:32,775 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 06:00:32,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-30 06:00:32,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964562981] [2023-08-30 06:00:32,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 06:00:32,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-30 06:00:32,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 06:00:32,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-30 06:00:32,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=692, Unknown=0, NotChecked=0, Total=870 [2023-08-30 06:00:32,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 241 [2023-08-30 06:00:32,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1187 places, 3026 transitions, 93193 flow. Second operand has 30 states, 30 states have (on average 97.63333333333334) internal successors, (2929), 30 states have internal predecessors, (2929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 06:00:32,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 06:00:32,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 241 [2023-08-30 06:00:32,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15