./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/mult-flipped-dist.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 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 23:12:48,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 23:12:48,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 23:12:48,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 23:12:48,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 23:12:48,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 23:12:48,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 23:12:48,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 23:12:48,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 23:12:48,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 23:12:48,997 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 23:12:48,999 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 23:12:48,999 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 23:12:49,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 23:12:49,002 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 23:12:49,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 23:12:49,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 23:12:49,009 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 23:12:49,011 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 23:12:49,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 23:12:49,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 23:12:49,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 23:12:49,018 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 23:12:49,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 23:12:49,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 23:12:49,032 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 23:12:49,033 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 23:12:49,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 23:12:49,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 23:12:49,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 23:12:49,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 23:12:49,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 23:12:49,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 23:12:49,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 23:12:49,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 23:12:49,041 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 23:12:49,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 23:12:49,042 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 23:12:49,042 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 23:12:49,043 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 23:12:49,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 23:12:49,045 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 23:12:49,076 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 23:12:49,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 23:12:49,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 23:12:49,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 23:12:49,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 23:12:49,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 23:12:49,079 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 23:12:49,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 23:12:49,079 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 23:12:49,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 23:12:49,081 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 23:12:49,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 23:12:49,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 23:12:49,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 23:12:49,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 23:12:49,082 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 23:12:49,082 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 23:12:49,082 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 23:12:49,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 23:12:49,083 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 23:12:49,083 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 23:12:49,083 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 23:12:49,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 23:12:49,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 23:12:49,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 23:12:49,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:12:49,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 23:12:49,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 23:12:49,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 23:12:49,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 23:12:49,085 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 23:12:49,085 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 23:12:49,086 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 23:12:49,086 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 23:12:49,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d10bf8c0e842192a13f4b6638f03cf57668d5bee07d0b49c4b595de1c605066 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 23:12:49,366 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 23:12:49,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 23:12:49,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 23:12:49,387 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 23:12:49,388 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 23:12:49,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-29 23:12:50,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 23:12:50,732 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 23:12:50,733 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-flipped-dist.wvr.c [2023-08-29 23:12:50,738 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370cadf60/e6fcc69f41374c199a184b7cb55b0790/FLAGaad5d85f3 [2023-08-29 23:12:50,752 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/370cadf60/e6fcc69f41374c199a184b7cb55b0790 [2023-08-29 23:12:50,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 23:12:50,756 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 23:12:50,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 23:12:50,757 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 23:12:50,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 23:12:50,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:12:50" (1/1) ... [2023-08-29 23:12:50,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3043aff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:50, skipping insertion in model container [2023-08-29 23:12:50,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 11:12:50" (1/1) ... [2023-08-29 23:12:50,770 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 23:12:50,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 23:12:50,925 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/mult-flipped-dist.wvr.c[2135,2148] [2023-08-29 23:12:50,937 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:12:50,947 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 23:12:50,983 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/mult-flipped-dist.wvr.c[2135,2148] [2023-08-29 23:12:50,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 23:12:51,004 INFO L208 MainTranslator]: Completed translation [2023-08-29 23:12:51,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51 WrapperNode [2023-08-29 23:12:51,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 23:12:51,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 23:12:51,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 23:12:51,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 23:12:51,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,065 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 73 [2023-08-29 23:12:51,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 23:12:51,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 23:12:51,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 23:12:51,067 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 23:12:51,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,107 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,108 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 23:12:51,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 23:12:51,113 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 23:12:51,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 23:12:51,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (1/1) ... [2023-08-29 23:12:51,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 23:12:51,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:12:51,146 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 23:12:51,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 23:12:51,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 23:12:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-29 23:12:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-29 23:12:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-29 23:12:51,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-29 23:12:51,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-29 23:12:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-29 23:12:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 23:12:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 23:12:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 23:12:51,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 23:12:51,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 23:12:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 23:12:51,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 23:12:51,202 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 23:12:51,313 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 23:12:51,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 23:12:51,611 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 23:12:51,618 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 23:12:51,618 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 23:12:51,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:12:51 BoogieIcfgContainer [2023-08-29 23:12:51,620 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 23:12:51,622 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 23:12:51,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 23:12:51,625 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 23:12:51,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 11:12:50" (1/3) ... [2023-08-29 23:12:51,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288bd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:12:51, skipping insertion in model container [2023-08-29 23:12:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 11:12:51" (2/3) ... [2023-08-29 23:12:51,626 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@288bd64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 11:12:51, skipping insertion in model container [2023-08-29 23:12:51,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 11:12:51" (3/3) ... [2023-08-29 23:12:51,627 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-flipped-dist.wvr.c [2023-08-29 23:12:51,640 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 23:12:51,640 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-29 23:12:51,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 23:12:51,709 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 23:12:51,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 121 transitions, 266 flow [2023-08-29 23:12:51,791 INFO L130 PetriNetUnfolder]: 7/118 cut-off events. [2023-08-29 23:12:51,791 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:51,796 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 5. Compared 113 event pairs, 0 based on Foata normal form. 0/97 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-29 23:12:51,796 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 121 transitions, 266 flow [2023-08-29 23:12:51,800 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:51,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 23:12:51,810 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:51,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:51,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 114 transitions, 246 flow [2023-08-29 23:12:51,841 INFO L130 PetriNetUnfolder]: 7/114 cut-off events. [2023-08-29 23:12:51,841 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:51,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 114 events. 7/114 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-29 23:12:51,843 INFO L119 LiptonReduction]: Number of co-enabled transitions 1680 [2023-08-29 23:12:54,885 INFO L134 LiptonReduction]: Checked pairs total: 1724 [2023-08-29 23:12:54,885 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-29 23:12:54,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 23:12:54,903 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;@6eff2042, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 23:12:54,903 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 23:12:54,905 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-29 23:12:54,905 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 23:12:54,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:54,906 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 23:12:54,906 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)] === [2023-08-29 23:12:54,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:54,911 INFO L85 PathProgramCache]: Analyzing trace with hash 441, now seen corresponding path program 1 times [2023-08-29 23:12:54,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:54,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387309294] [2023-08-29 23:12:54,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:54,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:54,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:54,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:54,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387309294] [2023-08-29 23:12:54,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387309294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:54,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:54,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 23:12:54,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239449847] [2023-08-29 23:12:54,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:55,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 23:12:55,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:55,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 23:12:55,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 23:12:55,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 224 [2023-08-29 23:12:55,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,028 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:55,028 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 224 [2023-08-29 23:12:55,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:55,174 INFO L130 PetriNetUnfolder]: 578/785 cut-off events. [2023-08-29 23:12:55,174 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-29 23:12:55,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 785 events. 578/785 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2787 event pairs, 263 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1257. Up to 777 conditions per place. [2023-08-29 23:12:55,190 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-08-29 23:12:55,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 32 transitions, 140 flow [2023-08-29 23:12:55,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 23:12:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 23:12:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 252 transitions. [2023-08-29 23:12:55,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-29 23:12:55,210 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 252 transitions. [2023-08-29 23:12:55,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 252 transitions. [2023-08-29 23:12:55,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:55,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 252 transitions. [2023-08-29 23:12:55,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 126.0) internal successors, (252), 2 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,241 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,259 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 88 flow. Second operand 2 states and 252 transitions. [2023-08-29 23:12:55,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 32 transitions, 140 flow [2023-08-29 23:12:55,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-29 23:12:55,265 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 70 flow [2023-08-29 23:12:55,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=34, PETRI_TRANSITIONS=32} [2023-08-29 23:12:55,272 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-29 23:12:55,273 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 70 flow [2023-08-29 23:12:55,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 110.5) internal successors, (221), 2 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:55,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:12:55,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 23:12:55,275 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)] === [2023-08-29 23:12:55,277 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:55,278 INFO L85 PathProgramCache]: Analyzing trace with hash 432598, now seen corresponding path program 1 times [2023-08-29 23:12:55,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:55,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860116172] [2023-08-29 23:12:55,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:55,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:55,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:55,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:55,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860116172] [2023-08-29 23:12:55,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860116172] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:55,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:55,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:55,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488520656] [2023-08-29 23:12:55,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:55,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:55,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:55,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:55,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:55,532 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:12:55,533 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:55,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:12:55,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:55,671 INFO L130 PetriNetUnfolder]: 551/746 cut-off events. [2023-08-29 23:12:55,671 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:55,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 746 events. 551/746 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2573 event pairs, 250 based on Foata normal form. 0/368 useless extension candidates. Maximal degree in co-relation 1496. Up to 737 conditions per place. [2023-08-29 23:12:55,675 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-29 23:12:55,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 30 transitions, 120 flow [2023-08-29 23:12:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:55,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-29 23:12:55,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2023-08-29 23:12:55,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-29 23:12:55,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-29 23:12:55,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:55,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-29 23:12:55,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,702 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,702 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 70 flow. Second operand 3 states and 329 transitions. [2023-08-29 23:12:55,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 30 transitions, 120 flow [2023-08-29 23:12:55,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 23:12:55,703 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 68 flow [2023-08-29 23:12:55,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=34, PETRI_TRANSITIONS=30} [2023-08-29 23:12:55,704 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places. [2023-08-29 23:12:55,704 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 68 flow [2023-08-29 23:12:55,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:55,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 23:12:55,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 23:12:55,705 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)] === [2023-08-29 23:12:55,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 432599, now seen corresponding path program 1 times [2023-08-29 23:12:55,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:55,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886902070] [2023-08-29 23:12:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:55,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:55,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:55,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:55,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:55,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886902070] [2023-08-29 23:12:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886902070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:55,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:55,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:55,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930427394] [2023-08-29 23:12:55,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:55,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:55,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:55,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:55,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:55,948 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-29 23:12:55,948 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:55,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:55,949 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-29 23:12:55,949 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:56,023 INFO L130 PetriNetUnfolder]: 524/707 cut-off events. [2023-08-29 23:12:56,023 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:56,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 707 events. 524/707 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2404 event pairs, 237 based on Foata normal form. 0/355 useless extension candidates. Maximal degree in co-relation 1419. Up to 698 conditions per place. [2023-08-29 23:12:56,027 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-29 23:12:56,027 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 114 flow [2023-08-29 23:12:56,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:56,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:56,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-29 23:12:56,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-29 23:12:56,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-29 23:12:56,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-29 23:12:56,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:56,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-29 23:12:56,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,033 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,033 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 68 flow. Second operand 3 states and 342 transitions. [2023-08-29 23:12:56,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 114 flow [2023-08-29 23:12:56,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:56,035 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 65 flow [2023-08-29 23:12:56,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=31, 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=33, PETRI_TRANSITIONS=28} [2023-08-29 23:12:56,035 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-29 23:12:56,036 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 65 flow [2023-08-29 23:12:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:56,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:12:56,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 23:12:56,037 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)] === [2023-08-29 23:12:56,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash 415735409, now seen corresponding path program 1 times [2023-08-29 23:12:56,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260690709] [2023-08-29 23:12:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:56,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:56,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:56,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260690709] [2023-08-29 23:12:56,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260690709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:56,072 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:56,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:56,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538835901] [2023-08-29 23:12:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:56,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:56,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:12:56,109 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,109 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:56,109 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:12:56,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:56,179 INFO L130 PetriNetUnfolder]: 498/669 cut-off events. [2023-08-29 23:12:56,179 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:56,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 669 events. 498/669 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2231 event pairs, 225 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 1344. Up to 660 conditions per place. [2023-08-29 23:12:56,187 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-29 23:12:56,187 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 107 flow [2023-08-29 23:12:56,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:56,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 325 transitions. [2023-08-29 23:12:56,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836309523809524 [2023-08-29 23:12:56,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 325 transitions. [2023-08-29 23:12:56,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 325 transitions. [2023-08-29 23:12:56,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:56,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 325 transitions. [2023-08-29 23:12:56,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,205 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,205 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 325 transitions. [2023-08-29 23:12:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 107 flow [2023-08-29 23:12:56,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:56,207 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 62 flow [2023-08-29 23:12:56,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=30, 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=32, PETRI_TRANSITIONS=26} [2023-08-29 23:12:56,209 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -10 predicate places. [2023-08-29 23:12:56,209 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 62 flow [2023-08-29 23:12:56,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:56,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 23:12:56,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 23:12:56,210 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)] === [2023-08-29 23:12:56,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:56,210 INFO L85 PathProgramCache]: Analyzing trace with hash 415735411, now seen corresponding path program 1 times [2023-08-29 23:12:56,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:56,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426041003] [2023-08-29 23:12:56,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:56,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:56,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:56,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:56,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426041003] [2023-08-29 23:12:56,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426041003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:56,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:56,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:56,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629832023] [2023-08-29 23:12:56,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:56,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:56,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:56,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:56,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:56,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-29 23:12:56,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:56,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-29 23:12:56,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:56,411 INFO L130 PetriNetUnfolder]: 472/631 cut-off events. [2023-08-29 23:12:56,412 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:56,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1273 conditions, 631 events. 472/631 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2062 event pairs, 213 based on Foata normal form. 0/331 useless extension candidates. Maximal degree in co-relation 1269. Up to 622 conditions per place. [2023-08-29 23:12:56,417 INFO L137 encePairwiseOnDemand]: 221/224 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-29 23:12:56,417 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 24 transitions, 100 flow [2023-08-29 23:12:56,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:56,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:56,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 338 transitions. [2023-08-29 23:12:56,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5029761904761905 [2023-08-29 23:12:56,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 338 transitions. [2023-08-29 23:12:56,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 338 transitions. [2023-08-29 23:12:56,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:56,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 338 transitions. [2023-08-29 23:12:56,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,422 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,423 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,423 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 62 flow. Second operand 3 states and 338 transitions. [2023-08-29 23:12:56,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 24 transitions, 100 flow [2023-08-29 23:12:56,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:56,425 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 59 flow [2023-08-29 23:12:56,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=31, PETRI_TRANSITIONS=24} [2023-08-29 23:12:56,427 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:56,428 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 59 flow [2023-08-29 23:12:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:56,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:56,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 23:12:56,429 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:56,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:56,429 INFO L85 PathProgramCache]: Analyzing trace with hash 89780272, now seen corresponding path program 1 times [2023-08-29 23:12:56,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:56,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713372794] [2023-08-29 23:12:56,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:56,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:56,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:56,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:56,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:56,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713372794] [2023-08-29 23:12:56,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713372794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:56,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:56,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 23:12:56,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269696658] [2023-08-29 23:12:56,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:56,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:56,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:56,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:56,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:56,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 224 [2023-08-29 23:12:56,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:56,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 224 [2023-08-29 23:12:56,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:56,678 INFO L130 PetriNetUnfolder]: 370/502 cut-off events. [2023-08-29 23:12:56,678 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:56,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 502 events. 370/502 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1593 event pairs, 165 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 1012. Up to 493 conditions per place. [2023-08-29 23:12:56,681 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-08-29 23:12:56,681 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 23 transitions, 97 flow [2023-08-29 23:12:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:56,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-29 23:12:56,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2023-08-29 23:12:56,683 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-29 23:12:56,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-29 23:12:56,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:56,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-29 23:12:56,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,686 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,686 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 59 flow. Second operand 3 states and 297 transitions. [2023-08-29 23:12:56,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 23 transitions, 97 flow [2023-08-29 23:12:56,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:56,687 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 58 flow [2023-08-29 23:12:56,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=31, PETRI_TRANSITIONS=23} [2023-08-29 23:12:56,688 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:56,688 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 58 flow [2023-08-29 23:12:56,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:56,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:56,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 23:12:56,689 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-29 23:12:56,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:56,690 INFO L85 PathProgramCache]: Analyzing trace with hash 89780273, now seen corresponding path program 1 times [2023-08-29 23:12:56,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:56,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539597588] [2023-08-29 23:12:56,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:56,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:56,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:56,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:56,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:56,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539597588] [2023-08-29 23:12:56,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539597588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:56,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:56,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:56,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918727724] [2023-08-29 23:12:56,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:56,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:56,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:56,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:56,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 224 [2023-08-29 23:12:56,822 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,822 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:56,822 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 224 [2023-08-29 23:12:56,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:56,868 INFO L130 PetriNetUnfolder]: 268/373 cut-off events. [2023-08-29 23:12:56,868 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 23:12:56,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 373 events. 268/373 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1103 event pairs, 117 based on Foata normal form. 0/223 useless extension candidates. Maximal degree in co-relation 755. Up to 364 conditions per place. [2023-08-29 23:12:56,870 INFO L137 encePairwiseOnDemand]: 222/224 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-29 23:12:56,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 94 flow [2023-08-29 23:12:56,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:56,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:56,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-08-29 23:12:56,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49851190476190477 [2023-08-29 23:12:56,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-08-29 23:12:56,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-08-29 23:12:56,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:56,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-08-29 23:12:56,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,875 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 58 flow. Second operand 3 states and 335 transitions. [2023-08-29 23:12:56,876 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 94 flow [2023-08-29 23:12:56,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:56,877 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 57 flow [2023-08-29 23:12:56,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=29, 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=31, PETRI_TRANSITIONS=22} [2023-08-29 23:12:56,877 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -11 predicate places. [2023-08-29 23:12:56,877 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 57 flow [2023-08-29 23:12:56,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:56,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:56,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:56,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 23:12:56,878 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)] === [2023-08-29 23:12:56,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:56,879 INFO L85 PathProgramCache]: Analyzing trace with hash 563403458, now seen corresponding path program 1 times [2023-08-29 23:12:56,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:56,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13613926] [2023-08-29 23:12:56,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:56,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:57,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:57,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13613926] [2023-08-29 23:12:57,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13613926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:57,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:57,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 23:12:57,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985599566] [2023-08-29 23:12:57,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:57,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 23:12:57,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:57,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 23:12:57,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 23:12:57,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 224 [2023-08-29 23:12:57,141 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,141 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:57,141 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 224 [2023-08-29 23:12:57,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:57,211 INFO L130 PetriNetUnfolder]: 359/506 cut-off events. [2023-08-29 23:12:57,211 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-29 23:12:57,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1032 conditions, 506 events. 359/506 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1613 event pairs, 39 based on Foata normal form. 1/308 useless extension candidates. Maximal degree in co-relation 1028. Up to 421 conditions per place. [2023-08-29 23:12:57,214 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 30 selfloop transitions, 4 changer transitions 1/38 dead transitions. [2023-08-29 23:12:57,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 38 transitions, 164 flow [2023-08-29 23:12:57,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 23:12:57,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 23:12:57,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-29 23:12:57,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53125 [2023-08-29 23:12:57,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-29 23:12:57,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-29 23:12:57,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:57,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-29 23:12:57,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,219 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 224.0) internal successors, (896), 4 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,219 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 57 flow. Second operand 3 states and 357 transitions. [2023-08-29 23:12:57,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 38 transitions, 164 flow [2023-08-29 23:12:57,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 38 transitions, 163 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:57,222 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 82 flow [2023-08-29 23:12:57,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=56, 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=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=82, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-29 23:12:57,224 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places. [2023-08-29 23:12:57,224 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 82 flow [2023-08-29 23:12:57,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:57,225 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] [2023-08-29 23:12:57,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 23:12:57,225 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)] === [2023-08-29 23:12:57,225 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:57,226 INFO L85 PathProgramCache]: Analyzing trace with hash -493619620, now seen corresponding path program 1 times [2023-08-29 23:12:57,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:57,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603442231] [2023-08-29 23:12:57,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:57,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:57,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:57,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603442231] [2023-08-29 23:12:57,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603442231] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:57,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:57,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:12:57,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175609554] [2023-08-29 23:12:57,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:57,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:57,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:57,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:57,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:57,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:12:57,404 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,404 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:57,404 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:12:57,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:57,544 INFO L130 PetriNetUnfolder]: 495/775 cut-off events. [2023-08-29 23:12:57,544 INFO L131 PetriNetUnfolder]: For 206/206 co-relation queries the response was YES. [2023-08-29 23:12:57,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1815 conditions, 775 events. 495/775 cut-off events. For 206/206 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3367 event pairs, 139 based on Foata normal form. 96/867 useless extension candidates. Maximal degree in co-relation 1810. Up to 388 conditions per place. [2023-08-29 23:12:57,549 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 54 selfloop transitions, 5 changer transitions 2/62 dead transitions. [2023-08-29 23:12:57,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 62 transitions, 304 flow [2023-08-29 23:12:57,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:12:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:12:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 560 transitions. [2023-08-29 23:12:57,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 23:12:57,551 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 560 transitions. [2023-08-29 23:12:57,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 560 transitions. [2023-08-29 23:12:57,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:57,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 560 transitions. [2023-08-29 23:12:57,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,554 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,555 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 82 flow. Second operand 5 states and 560 transitions. [2023-08-29 23:12:57,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 62 transitions, 304 flow [2023-08-29 23:12:57,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 62 transitions, 298 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:57,556 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 125 flow [2023-08-29 23:12:57,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=125, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-29 23:12:57,557 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -3 predicate places. [2023-08-29 23:12:57,557 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 125 flow [2023-08-29 23:12:57,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:57,558 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] [2023-08-29 23:12:57,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 23:12:57,558 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)] === [2023-08-29 23:12:57,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:57,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1936959650, now seen corresponding path program 1 times [2023-08-29 23:12:57,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:57,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124458128] [2023-08-29 23:12:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:57,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:57,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:57,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:57,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124458128] [2023-08-29 23:12:57,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124458128] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:57,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:57,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:12:57,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996725083] [2023-08-29 23:12:57,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:57,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:12:57,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:57,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:12:57,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:12:57,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-29 23:12:57,709 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 125 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,709 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:57,709 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-29 23:12:57,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:57,850 INFO L130 PetriNetUnfolder]: 496/780 cut-off events. [2023-08-29 23:12:57,851 INFO L131 PetriNetUnfolder]: For 900/1011 co-relation queries the response was YES. [2023-08-29 23:12:57,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 780 events. 496/780 cut-off events. For 900/1011 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3342 event pairs, 133 based on Foata normal form. 115/865 useless extension candidates. Maximal degree in co-relation 2363. Up to 477 conditions per place. [2023-08-29 23:12:57,856 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 39 selfloop transitions, 5 changer transitions 7/54 dead transitions. [2023-08-29 23:12:57,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 54 transitions, 317 flow [2023-08-29 23:12:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 23:12:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 23:12:57,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-08-29 23:12:57,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5089285714285714 [2023-08-29 23:12:57,858 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-08-29 23:12:57,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-08-29 23:12:57,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:57,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-08-29 23:12:57,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,862 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,862 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 125 flow. Second operand 4 states and 456 transitions. [2023-08-29 23:12:57,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 54 transitions, 317 flow [2023-08-29 23:12:57,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 307 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:57,868 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 151 flow [2023-08-29 23:12:57,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-08-29 23:12:57,870 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-29 23:12:57,870 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 151 flow [2023-08-29 23:12:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:57,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:57,871 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] [2023-08-29 23:12:57,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 23:12:57,871 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)] === [2023-08-29 23:12:57,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:57,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1363882676, now seen corresponding path program 2 times [2023-08-29 23:12:57,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525060012] [2023-08-29 23:12:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:57,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:57,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:57,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525060012] [2023-08-29 23:12:57,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525060012] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:57,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:57,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:12:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576283346] [2023-08-29 23:12:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:57,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:57,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:58,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:12:58,017 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:58,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:12:58,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:58,192 INFO L130 PetriNetUnfolder]: 599/997 cut-off events. [2023-08-29 23:12:58,193 INFO L131 PetriNetUnfolder]: For 2266/2358 co-relation queries the response was YES. [2023-08-29 23:12:58,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 997 events. 599/997 cut-off events. For 2266/2358 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4522 event pairs, 205 based on Foata normal form. 122/1103 useless extension candidates. Maximal degree in co-relation 3218. Up to 559 conditions per place. [2023-08-29 23:12:58,199 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 59 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-08-29 23:12:58,199 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 67 transitions, 437 flow [2023-08-29 23:12:58,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:12:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:12:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-29 23:12:58,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-08-29 23:12:58,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-29 23:12:58,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-29 23:12:58,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:58,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-29 23:12:58,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,207 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,208 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 151 flow. Second operand 5 states and 556 transitions. [2023-08-29 23:12:58,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 67 transitions, 437 flow [2023-08-29 23:12:58,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 67 transitions, 428 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:58,214 INFO L231 Difference]: Finished difference. Result has 49 places, 33 transitions, 206 flow [2023-08-29 23:12:58,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=33} [2023-08-29 23:12:58,215 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-29 23:12:58,215 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 33 transitions, 206 flow [2023-08-29 23:12:58,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:58,216 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] [2023-08-29 23:12:58,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 23:12:58,216 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)] === [2023-08-29 23:12:58,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:58,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1675666900, now seen corresponding path program 3 times [2023-08-29 23:12:58,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:58,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682894518] [2023-08-29 23:12:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:58,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:58,323 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:58,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:58,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682894518] [2023-08-29 23:12:58,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682894518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:58,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:58,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:12:58,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921351670] [2023-08-29 23:12:58,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:58,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:12:58,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:58,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:12:58,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:12:58,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-29 23:12:58,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 33 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:58,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-29 23:12:58,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:58,510 INFO L130 PetriNetUnfolder]: 888/1431 cut-off events. [2023-08-29 23:12:58,510 INFO L131 PetriNetUnfolder]: For 5137/5529 co-relation queries the response was YES. [2023-08-29 23:12:58,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 1431 events. 888/1431 cut-off events. For 5137/5529 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 7331 event pairs, 364 based on Foata normal form. 284/1639 useless extension candidates. Maximal degree in co-relation 5805. Up to 828 conditions per place. [2023-08-29 23:12:58,520 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 50 selfloop transitions, 12 changer transitions 5/71 dead transitions. [2023-08-29 23:12:58,520 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 551 flow [2023-08-29 23:12:58,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 23:12:58,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 23:12:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 457 transitions. [2023-08-29 23:12:58,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5100446428571429 [2023-08-29 23:12:58,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 457 transitions. [2023-08-29 23:12:58,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 457 transitions. [2023-08-29 23:12:58,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:58,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 457 transitions. [2023-08-29 23:12:58,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.25) internal successors, (457), 4 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,525 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,525 INFO L175 Difference]: Start difference. First operand has 49 places, 33 transitions, 206 flow. Second operand 4 states and 457 transitions. [2023-08-29 23:12:58,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 551 flow [2023-08-29 23:12:58,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 71 transitions, 534 flow, removed 5 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:58,530 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 336 flow [2023-08-29 23:12:58,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=336, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2023-08-29 23:12:58,531 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-29 23:12:58,531 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 336 flow [2023-08-29 23:12:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:58,531 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] [2023-08-29 23:12:58,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 23:12:58,532 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)] === [2023-08-29 23:12:58,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash 189967031, now seen corresponding path program 1 times [2023-08-29 23:12:58,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:58,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243122682] [2023-08-29 23:12:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:58,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:58,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:58,609 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:58,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:58,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243122682] [2023-08-29 23:12:58,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243122682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:58,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:58,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:12:58,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104610920] [2023-08-29 23:12:58,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:58,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:12:58,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:58,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:12:58,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:12:58,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-29 23:12:58,628 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 336 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,628 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:58,628 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-29 23:12:58,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:58,817 INFO L130 PetriNetUnfolder]: 902/1457 cut-off events. [2023-08-29 23:12:58,817 INFO L131 PetriNetUnfolder]: For 8142/8489 co-relation queries the response was YES. [2023-08-29 23:12:58,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6797 conditions, 1457 events. 902/1457 cut-off events. For 8142/8489 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 7284 event pairs, 319 based on Foata normal form. 234/1633 useless extension candidates. Maximal degree in co-relation 6782. Up to 1113 conditions per place. [2023-08-29 23:12:58,829 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 49 selfloop transitions, 8 changer transitions 10/71 dead transitions. [2023-08-29 23:12:58,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 71 transitions, 671 flow [2023-08-29 23:12:58,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 23:12:58,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 23:12:58,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-08-29 23:12:58,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066964285714286 [2023-08-29 23:12:58,831 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-08-29 23:12:58,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-08-29 23:12:58,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:58,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-08-29 23:12:58,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,834 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,834 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 336 flow. Second operand 4 states and 454 transitions. [2023-08-29 23:12:58,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 71 transitions, 671 flow [2023-08-29 23:12:58,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 71 transitions, 662 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 23:12:58,841 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 385 flow [2023-08-29 23:12:58,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=385, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-08-29 23:12:58,842 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places. [2023-08-29 23:12:58,842 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 385 flow [2023-08-29 23:12:58,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:58,843 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] [2023-08-29 23:12:58,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 23:12:58,843 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)] === [2023-08-29 23:12:58,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:58,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1022665134, now seen corresponding path program 4 times [2023-08-29 23:12:58,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:58,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509801586] [2023-08-29 23:12:58,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:58,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:58,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:58,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:58,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509801586] [2023-08-29 23:12:58,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509801586] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:58,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:58,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:12:58,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577644212] [2023-08-29 23:12:58,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:58,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:58,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:58,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:58,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:58,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-29 23:12:58,969 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 385 flow. Second operand has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:58,969 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:58,969 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-29 23:12:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:59,242 INFO L130 PetriNetUnfolder]: 1104/1792 cut-off events. [2023-08-29 23:12:59,242 INFO L131 PetriNetUnfolder]: For 10126/10391 co-relation queries the response was YES. [2023-08-29 23:12:59,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8337 conditions, 1792 events. 1104/1792 cut-off events. For 10126/10391 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 9396 event pairs, 336 based on Foata normal form. 130/1855 useless extension candidates. Maximal degree in co-relation 8320. Up to 938 conditions per place. [2023-08-29 23:12:59,256 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 69 selfloop transitions, 19 changer transitions 19/109 dead transitions. [2023-08-29 23:12:59,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 109 transitions, 1087 flow [2023-08-29 23:12:59,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:12:59,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:12:59,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2023-08-29 23:12:59,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49330357142857145 [2023-08-29 23:12:59,259 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2023-08-29 23:12:59,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2023-08-29 23:12:59,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:59,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2023-08-29 23:12:59,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,263 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,263 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 385 flow. Second operand 6 states and 663 transitions. [2023-08-29 23:12:59,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 109 transitions, 1087 flow [2023-08-29 23:12:59,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 109 transitions, 1040 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-08-29 23:12:59,273 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 568 flow [2023-08-29 23:12:59,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=568, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-08-29 23:12:59,274 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 21 predicate places. [2023-08-29 23:12:59,274 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 568 flow [2023-08-29 23:12:59,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.8) internal successors, (514), 5 states have internal predecessors, (514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:59,274 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] [2023-08-29 23:12:59,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 23:12:59,275 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)] === [2023-08-29 23:12:59,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -962485018, now seen corresponding path program 2 times [2023-08-29 23:12:59,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:59,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281757309] [2023-08-29 23:12:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:59,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:59,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:59,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:59,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281757309] [2023-08-29 23:12:59,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281757309] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:59,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:59,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 23:12:59,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037402396] [2023-08-29 23:12:59,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:59,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 23:12:59,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:59,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 23:12:59,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 23:12:59,392 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:12:59,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 568 flow. Second operand has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:59,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:12:59,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:59,637 INFO L130 PetriNetUnfolder]: 996/1596 cut-off events. [2023-08-29 23:12:59,637 INFO L131 PetriNetUnfolder]: For 9777/9946 co-relation queries the response was YES. [2023-08-29 23:12:59,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8147 conditions, 1596 events. 996/1596 cut-off events. For 9777/9946 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 7635 event pairs, 368 based on Foata normal form. 118/1683 useless extension candidates. Maximal degree in co-relation 8127. Up to 966 conditions per place. [2023-08-29 23:12:59,651 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 52 selfloop transitions, 12 changer transitions 24/90 dead transitions. [2023-08-29 23:12:59,651 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 90 transitions, 949 flow [2023-08-29 23:12:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 23:12:59,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 23:12:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-29 23:12:59,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49642857142857144 [2023-08-29 23:12:59,653 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-29 23:12:59,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-29 23:12:59,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:59,654 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-29 23:12:59,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,657 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 224.0) internal successors, (1344), 6 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,657 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 568 flow. Second operand 5 states and 556 transitions. [2023-08-29 23:12:59,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 90 transitions, 949 flow [2023-08-29 23:12:59,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 90 transitions, 909 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-29 23:12:59,668 INFO L231 Difference]: Finished difference. Result has 66 places, 53 transitions, 585 flow [2023-08-29 23:12:59,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=535, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=585, PETRI_PLACES=66, PETRI_TRANSITIONS=53} [2023-08-29 23:12:59,669 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places. [2023-08-29 23:12:59,669 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 53 transitions, 585 flow [2023-08-29 23:12:59,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.8) internal successors, (519), 5 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:59,670 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] [2023-08-29 23:12:59,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 23:12:59,670 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)] === [2023-08-29 23:12:59,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:59,671 INFO L85 PathProgramCache]: Analyzing trace with hash -148083577, now seen corresponding path program 2 times [2023-08-29 23:12:59,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:59,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126565410] [2023-08-29 23:12:59,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:59,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:12:59,741 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:12:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:12:59,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126565410] [2023-08-29 23:12:59,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126565410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 23:12:59,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 23:12:59,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 23:12:59,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664542549] [2023-08-29 23:12:59,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:12:59,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:12:59,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:12:59,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:12:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 23:12:59,765 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-29 23:12:59,766 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 53 transitions, 585 flow. Second operand has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,766 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:12:59,766 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-29 23:12:59,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:12:59,936 INFO L130 PetriNetUnfolder]: 825/1235 cut-off events. [2023-08-29 23:12:59,936 INFO L131 PetriNetUnfolder]: For 12504/12806 co-relation queries the response was YES. [2023-08-29 23:12:59,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7265 conditions, 1235 events. 825/1235 cut-off events. For 12504/12806 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 5379 event pairs, 268 based on Foata normal form. 190/1382 useless extension candidates. Maximal degree in co-relation 7243. Up to 785 conditions per place. [2023-08-29 23:12:59,953 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 51 selfloop transitions, 26 changer transitions 6/88 dead transitions. [2023-08-29 23:12:59,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 88 transitions, 1108 flow [2023-08-29 23:12:59,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 23:12:59,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 23:12:59,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-08-29 23:12:59,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022321428571429 [2023-08-29 23:12:59,955 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-08-29 23:12:59,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-08-29 23:12:59,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:12:59,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-08-29 23:12:59,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,959 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,959 INFO L175 Difference]: Start difference. First operand has 66 places, 53 transitions, 585 flow. Second operand 4 states and 450 transitions. [2023-08-29 23:12:59,959 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 88 transitions, 1108 flow [2023-08-29 23:12:59,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 88 transitions, 998 flow, removed 36 selfloop flow, removed 3 redundant places. [2023-08-29 23:12:59,971 INFO L231 Difference]: Finished difference. Result has 65 places, 64 transitions, 779 flow [2023-08-29 23:12:59,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=779, PETRI_PLACES=65, PETRI_TRANSITIONS=64} [2023-08-29 23:12:59,972 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 23 predicate places. [2023-08-29 23:12:59,972 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 64 transitions, 779 flow [2023-08-29 23:12:59,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.5) internal successors, (426), 4 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:12:59,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:12:59,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:12:59,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 23:12:59,973 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)] === [2023-08-29 23:12:59,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:12:59,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2001982109, now seen corresponding path program 1 times [2023-08-29 23:12:59,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:12:59,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012494906] [2023-08-29 23:12:59,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:12:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:12:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:00,074 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:00,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012494906] [2023-08-29 23:13:00,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012494906] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:00,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [560560398] [2023-08-29 23:13:00,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:00,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:00,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:00,081 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) [2023-08-29 23:13:00,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 23:13:00,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:00,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 23:13:00,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:00,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:00,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:00,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [560560398] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:00,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-29 23:13:00,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-08-29 23:13:00,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121289531] [2023-08-29 23:13:00,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 23:13:00,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 23:13:00,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:00,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 23:13:00,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-29 23:13:00,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 224 [2023-08-29 23:13:00,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 64 transitions, 779 flow. Second operand has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:00,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:00,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 224 [2023-08-29 23:13:00,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:00,571 INFO L130 PetriNetUnfolder]: 896/1303 cut-off events. [2023-08-29 23:13:00,572 INFO L131 PetriNetUnfolder]: For 11458/12041 co-relation queries the response was YES. [2023-08-29 23:13:00,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7834 conditions, 1303 events. 896/1303 cut-off events. For 11458/12041 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5233 event pairs, 140 based on Foata normal form. 153/1419 useless extension candidates. Maximal degree in co-relation 7812. Up to 1094 conditions per place. [2023-08-29 23:13:00,583 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 70 selfloop transitions, 14 changer transitions 1/91 dead transitions. [2023-08-29 23:13:00,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 91 transitions, 1174 flow [2023-08-29 23:13:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 23:13:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 23:13:00,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 449 transitions. [2023-08-29 23:13:00,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5011160714285714 [2023-08-29 23:13:00,586 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 449 transitions. [2023-08-29 23:13:00,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 449 transitions. [2023-08-29 23:13:00,586 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:00,587 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 449 transitions. [2023-08-29 23:13:00,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.25) internal successors, (449), 4 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:00,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:00,589 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 224.0) internal successors, (1120), 5 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:00,589 INFO L175 Difference]: Start difference. First operand has 65 places, 64 transitions, 779 flow. Second operand 4 states and 449 transitions. [2023-08-29 23:13:00,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 91 transitions, 1174 flow [2023-08-29 23:13:00,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 91 transitions, 1141 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-29 23:13:00,599 INFO L231 Difference]: Finished difference. Result has 64 places, 68 transitions, 844 flow [2023-08-29 23:13:00,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=749, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=844, PETRI_PLACES=64, PETRI_TRANSITIONS=68} [2023-08-29 23:13:00,600 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 22 predicate places. [2023-08-29 23:13:00,600 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 68 transitions, 844 flow [2023-08-29 23:13:00,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 106.75) internal successors, (427), 4 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:00,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:00,601 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:00,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:00,806 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,SelfDestructingSolverStorable16 [2023-08-29 23:13:00,806 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)] === [2023-08-29 23:13:00,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:00,807 INFO L85 PathProgramCache]: Analyzing trace with hash 187310563, now seen corresponding path program 2 times [2023-08-29 23:13:00,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:00,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239479780] [2023-08-29 23:13:00,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:00,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:00,933 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:00,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239479780] [2023-08-29 23:13:00,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239479780] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:00,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567771483] [2023-08-29 23:13:00,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:13:00,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:00,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:00,936 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) [2023-08-29 23:13:00,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 23:13:01,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:13:01,036 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:01,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 23:13:01,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:01,120 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:01,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:01,166 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:01,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567771483] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:01,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:01,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-08-29 23:13:01,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222658210] [2023-08-29 23:13:01,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:01,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 23:13:01,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:01,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 23:13:01,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-29 23:13:01,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-29 23:13:01,235 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 68 transitions, 844 flow. Second operand has 7 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:01,235 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:01,235 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-29 23:13:01,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:01,576 INFO L130 PetriNetUnfolder]: 1246/1813 cut-off events. [2023-08-29 23:13:01,576 INFO L131 PetriNetUnfolder]: For 16262/16395 co-relation queries the response was YES. [2023-08-29 23:13:01,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11044 conditions, 1813 events. 1246/1813 cut-off events. For 16262/16395 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 7636 event pairs, 240 based on Foata normal form. 131/1923 useless extension candidates. Maximal degree in co-relation 11022. Up to 961 conditions per place. [2023-08-29 23:13:01,592 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 102 selfloop transitions, 50 changer transitions 3/159 dead transitions. [2023-08-29 23:13:01,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 159 transitions, 2114 flow [2023-08-29 23:13:01,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-29 23:13:01,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-29 23:13:01,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 869 transitions. [2023-08-29 23:13:01,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849330357142857 [2023-08-29 23:13:01,595 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 869 transitions. [2023-08-29 23:13:01,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 869 transitions. [2023-08-29 23:13:01,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:01,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 869 transitions. [2023-08-29 23:13:01,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 108.625) internal successors, (869), 8 states have internal predecessors, (869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:01,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 224.0) internal successors, (2016), 9 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:01,600 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 224.0) internal successors, (2016), 9 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:01,600 INFO L175 Difference]: Start difference. First operand has 64 places, 68 transitions, 844 flow. Second operand 8 states and 869 transitions. [2023-08-29 23:13:01,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 159 transitions, 2114 flow [2023-08-29 23:13:01,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 159 transitions, 2078 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-29 23:13:01,616 INFO L231 Difference]: Finished difference. Result has 73 places, 101 transitions, 1468 flow [2023-08-29 23:13:01,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=824, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1468, PETRI_PLACES=73, PETRI_TRANSITIONS=101} [2023-08-29 23:13:01,616 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places. [2023-08-29 23:13:01,616 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 101 transitions, 1468 flow [2023-08-29 23:13:01,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 103.57142857142857) internal successors, (725), 7 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:01,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:01,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:01,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:01,827 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,SelfDestructingSolverStorable17 [2023-08-29 23:13:01,828 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)] === [2023-08-29 23:13:01,828 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:01,828 INFO L85 PathProgramCache]: Analyzing trace with hash -800491465, now seen corresponding path program 3 times [2023-08-29 23:13:01,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:01,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97780470] [2023-08-29 23:13:01,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:01,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:01,930 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:01,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97780470] [2023-08-29 23:13:01,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97780470] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:01,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1806421441] [2023-08-29 23:13:01,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:13:01,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:01,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:01,932 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) [2023-08-29 23:13:01,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 23:13:02,022 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 23:13:02,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:02,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-29 23:13:02,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:02,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:02,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:02,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1806421441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:02,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:02,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-08-29 23:13:02,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603885834] [2023-08-29 23:13:02,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:02,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-29 23:13:02,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:02,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-29 23:13:02,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-29 23:13:02,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-29 23:13:02,170 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 101 transitions, 1468 flow. Second operand has 8 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:02,170 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:02,170 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-29 23:13:02,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:02,468 INFO L130 PetriNetUnfolder]: 1242/1776 cut-off events. [2023-08-29 23:13:02,468 INFO L131 PetriNetUnfolder]: For 20873/21017 co-relation queries the response was YES. [2023-08-29 23:13:02,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12037 conditions, 1776 events. 1242/1776 cut-off events. For 20873/21017 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 7181 event pairs, 254 based on Foata normal form. 147/1897 useless extension candidates. Maximal degree in co-relation 12012. Up to 1120 conditions per place. [2023-08-29 23:13:02,484 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 80 selfloop transitions, 61 changer transitions 2/147 dead transitions. [2023-08-29 23:13:02,485 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 147 transitions, 2293 flow [2023-08-29 23:13:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 23:13:02,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 23:13:02,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 651 transitions. [2023-08-29 23:13:02,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.484375 [2023-08-29 23:13:02,487 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 651 transitions. [2023-08-29 23:13:02,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 651 transitions. [2023-08-29 23:13:02,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:02,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 651 transitions. [2023-08-29 23:13:02,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 108.5) internal successors, (651), 6 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:02,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:02,491 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 224.0) internal successors, (1568), 7 states have internal predecessors, (1568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:02,491 INFO L175 Difference]: Start difference. First operand has 73 places, 101 transitions, 1468 flow. Second operand 6 states and 651 transitions. [2023-08-29 23:13:02,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 147 transitions, 2293 flow [2023-08-29 23:13:02,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 147 transitions, 2269 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-29 23:13:02,513 INFO L231 Difference]: Finished difference. Result has 81 places, 119 transitions, 1973 flow [2023-08-29 23:13:02,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1973, PETRI_PLACES=81, PETRI_TRANSITIONS=119} [2023-08-29 23:13:02,514 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 39 predicate places. [2023-08-29 23:13:02,514 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 119 transitions, 1973 flow [2023-08-29 23:13:02,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.5) internal successors, (820), 8 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:02,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:02,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:02,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:02,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:02,720 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)] === [2023-08-29 23:13:02,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:02,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1587532899, now seen corresponding path program 1 times [2023-08-29 23:13:02,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:02,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131107657] [2023-08-29 23:13:02,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:02,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:02,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:02,978 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:02,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:02,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131107657] [2023-08-29 23:13:02,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131107657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:02,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686276373] [2023-08-29 23:13:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:02,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:02,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:02,980 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) [2023-08-29 23:13:02,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 23:13:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:03,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:03,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:03,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:03,238 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:03,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686276373] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:03,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:03,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2023-08-29 23:13:03,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034137507] [2023-08-29 23:13:03,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:03,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 23:13:03,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:03,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 23:13:03,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-29 23:13:03,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:03,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 119 transitions, 1973 flow. Second operand has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:03,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:03,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:03,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:03,861 INFO L130 PetriNetUnfolder]: 1602/2283 cut-off events. [2023-08-29 23:13:03,861 INFO L131 PetriNetUnfolder]: For 29474/30145 co-relation queries the response was YES. [2023-08-29 23:13:03,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16239 conditions, 2283 events. 1602/2283 cut-off events. For 29474/30145 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 9487 event pairs, 64 based on Foata normal form. 150/2302 useless extension candidates. Maximal degree in co-relation 16210. Up to 1701 conditions per place. [2023-08-29 23:13:03,881 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 136 selfloop transitions, 57 changer transitions 2/208 dead transitions. [2023-08-29 23:13:03,881 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 208 transitions, 3054 flow [2023-08-29 23:13:03,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:03,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:03,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-08-29 23:13:03,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-08-29 23:13:03,884 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-08-29 23:13:03,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-08-29 23:13:03,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:03,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-08-29 23:13:03,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:03,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:03,889 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:03,890 INFO L175 Difference]: Start difference. First operand has 81 places, 119 transitions, 1973 flow. Second operand 9 states and 998 transitions. [2023-08-29 23:13:03,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 208 transitions, 3054 flow [2023-08-29 23:13:03,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 208 transitions, 2839 flow, removed 85 selfloop flow, removed 2 redundant places. [2023-08-29 23:13:03,928 INFO L231 Difference]: Finished difference. Result has 90 places, 152 transitions, 2473 flow [2023-08-29 23:13:03,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=1780, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2473, PETRI_PLACES=90, PETRI_TRANSITIONS=152} [2023-08-29 23:13:03,929 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 48 predicate places. [2023-08-29 23:13:03,929 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 152 transitions, 2473 flow [2023-08-29 23:13:03,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 104.33333333333333) internal successors, (939), 9 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:03,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:03,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:03,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-29 23:13:04,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:04,142 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)] === [2023-08-29 23:13:04,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:04,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1033459943, now seen corresponding path program 2 times [2023-08-29 23:13:04,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:04,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569907682] [2023-08-29 23:13:04,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:04,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:04,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:04,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569907682] [2023-08-29 23:13:04,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569907682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:04,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764031973] [2023-08-29 23:13:04,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:13:04,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:04,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:04,415 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) [2023-08-29 23:13:04,439 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 23:13:04,546 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:13:04,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:04,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:04,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:04,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:04,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:04,823 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:04,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764031973] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:04,824 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:04,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-29 23:13:04,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120897370] [2023-08-29 23:13:04,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:04,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 23:13:04,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:04,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 23:13:04,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-29 23:13:04,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:04,875 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 152 transitions, 2473 flow. Second operand has 11 states, 11 states have (on average 104.18181818181819) internal successors, (1146), 11 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:04,875 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:04,875 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:04,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:05,511 INFO L130 PetriNetUnfolder]: 1988/2855 cut-off events. [2023-08-29 23:13:05,511 INFO L131 PetriNetUnfolder]: For 37419/38013 co-relation queries the response was YES. [2023-08-29 23:13:05,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20449 conditions, 2855 events. 1988/2855 cut-off events. For 37419/38013 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 12526 event pairs, 202 based on Foata normal form. 160/2886 useless extension candidates. Maximal degree in co-relation 20416. Up to 2205 conditions per place. [2023-08-29 23:13:05,539 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 159 selfloop transitions, 59 changer transitions 2/233 dead transitions. [2023-08-29 23:13:05,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 233 transitions, 3455 flow [2023-08-29 23:13:05,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:05,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1002 transitions. [2023-08-29 23:13:05,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49702380952380953 [2023-08-29 23:13:05,543 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1002 transitions. [2023-08-29 23:13:05,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1002 transitions. [2023-08-29 23:13:05,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:05,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1002 transitions. [2023-08-29 23:13:05,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 111.33333333333333) internal successors, (1002), 9 states have internal predecessors, (1002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:05,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:05,549 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:05,549 INFO L175 Difference]: Start difference. First operand has 90 places, 152 transitions, 2473 flow. Second operand 9 states and 1002 transitions. [2023-08-29 23:13:05,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 233 transitions, 3455 flow [2023-08-29 23:13:05,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 233 transitions, 3201 flow, removed 115 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:05,598 INFO L231 Difference]: Finished difference. Result has 100 places, 173 transitions, 2729 flow [2023-08-29 23:13:05,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=2219, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2729, PETRI_PLACES=100, PETRI_TRANSITIONS=173} [2023-08-29 23:13:05,599 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 58 predicate places. [2023-08-29 23:13:05,599 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 173 transitions, 2729 flow [2023-08-29 23:13:05,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 104.18181818181819) internal successors, (1146), 11 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:05,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:05,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:05,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:05,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:05,809 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)] === [2023-08-29 23:13:05,809 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:05,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1838073433, now seen corresponding path program 3 times [2023-08-29 23:13:05,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:05,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857399797] [2023-08-29 23:13:05,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:05,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:06,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857399797] [2023-08-29 23:13:06,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857399797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:06,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104736562] [2023-08-29 23:13:06,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:13:06,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:06,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:06,054 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) [2023-08-29 23:13:06,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 23:13:06,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 23:13:06,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:06,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:06,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:06,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:06,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104736562] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:06,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:06,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 9 [2023-08-29 23:13:06,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500078564] [2023-08-29 23:13:06,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:06,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-29 23:13:06,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:06,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-29 23:13:06,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-08-29 23:13:06,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:06,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 173 transitions, 2729 flow. Second operand has 11 states, 11 states have (on average 104.36363636363636) internal successors, (1148), 11 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:06,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:06,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:06,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:07,111 INFO L130 PetriNetUnfolder]: 2508/3609 cut-off events. [2023-08-29 23:13:07,111 INFO L131 PetriNetUnfolder]: For 47442/48154 co-relation queries the response was YES. [2023-08-29 23:13:07,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25301 conditions, 3609 events. 2508/3609 cut-off events. For 47442/48154 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 16414 event pairs, 384 based on Foata normal form. 180/3628 useless extension candidates. Maximal degree in co-relation 25264. Up to 2953 conditions per place. [2023-08-29 23:13:07,201 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 190 selfloop transitions, 67 changer transitions 2/272 dead transitions. [2023-08-29 23:13:07,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 272 transitions, 4192 flow [2023-08-29 23:13:07,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:07,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:07,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 998 transitions. [2023-08-29 23:13:07,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49503968253968256 [2023-08-29 23:13:07,206 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 998 transitions. [2023-08-29 23:13:07,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 998 transitions. [2023-08-29 23:13:07,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:07,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 998 transitions. [2023-08-29 23:13:07,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.88888888888889) internal successors, (998), 9 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:07,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:07,224 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:07,224 INFO L175 Difference]: Start difference. First operand has 100 places, 173 transitions, 2729 flow. Second operand 9 states and 998 transitions. [2023-08-29 23:13:07,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 272 transitions, 4192 flow [2023-08-29 23:13:07,276 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 272 transitions, 3967 flow, removed 101 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:07,281 INFO L231 Difference]: Finished difference. Result has 111 places, 216 transitions, 3504 flow [2023-08-29 23:13:07,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=2504, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3504, PETRI_PLACES=111, PETRI_TRANSITIONS=216} [2023-08-29 23:13:07,282 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 69 predicate places. [2023-08-29 23:13:07,282 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 216 transitions, 3504 flow [2023-08-29 23:13:07,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 104.36363636363636) internal successors, (1148), 11 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:07,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:07,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:07,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:07,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:07,490 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)] === [2023-08-29 23:13:07,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:07,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1140109893, now seen corresponding path program 4 times [2023-08-29 23:13:07,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:07,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541209047] [2023-08-29 23:13:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:07,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:07,734 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:07,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541209047] [2023-08-29 23:13:07,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541209047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:07,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [467582113] [2023-08-29 23:13:07,735 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:13:07,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:07,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:07,737 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) [2023-08-29 23:13:07,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 23:13:07,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:13:07,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:07,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:07,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:07,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:07,983 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:08,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [467582113] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:08,106 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:08,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-29 23:13:08,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010633897] [2023-08-29 23:13:08,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:08,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:13:08,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:08,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:13:08,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:13:08,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:08,145 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 216 transitions, 3504 flow. Second operand has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:08,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:08,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:08,914 INFO L130 PetriNetUnfolder]: 2816/4061 cut-off events. [2023-08-29 23:13:08,915 INFO L131 PetriNetUnfolder]: For 53826/54507 co-relation queries the response was YES. [2023-08-29 23:13:08,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28263 conditions, 4061 events. 2816/4061 cut-off events. For 53826/54507 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 18923 event pairs, 516 based on Foata normal form. 174/4068 useless extension candidates. Maximal degree in co-relation 28221. Up to 3537 conditions per place. [2023-08-29 23:13:08,957 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 205 selfloop transitions, 65 changer transitions 2/285 dead transitions. [2023-08-29 23:13:08,958 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 285 transitions, 4610 flow [2023-08-29 23:13:08,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:08,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:08,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-08-29 23:13:08,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-29 23:13:08,960 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-08-29 23:13:08,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-08-29 23:13:08,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:08,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-08-29 23:13:08,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:08,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:08,965 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:08,965 INFO L175 Difference]: Start difference. First operand has 111 places, 216 transitions, 3504 flow. Second operand 9 states and 992 transitions. [2023-08-29 23:13:08,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 285 transitions, 4610 flow [2023-08-29 23:13:09,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 285 transitions, 4272 flow, removed 157 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:09,040 INFO L231 Difference]: Finished difference. Result has 121 places, 235 transitions, 3710 flow [2023-08-29 23:13:09,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3166, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3710, PETRI_PLACES=121, PETRI_TRANSITIONS=235} [2023-08-29 23:13:09,041 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 79 predicate places. [2023-08-29 23:13:09,041 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 235 transitions, 3710 flow [2023-08-29 23:13:09,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:09,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:09,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:09,048 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-29 23:13:09,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:09,248 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)] === [2023-08-29 23:13:09,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:09,249 INFO L85 PathProgramCache]: Analyzing trace with hash 964793071, now seen corresponding path program 5 times [2023-08-29 23:13:09,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:09,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145392176] [2023-08-29 23:13:09,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:09,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:09,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:09,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:09,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145392176] [2023-08-29 23:13:09,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145392176] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:09,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597653403] [2023-08-29 23:13:09,465 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:13:09,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:09,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:09,466 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) [2023-08-29 23:13:09,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 23:13:09,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-29 23:13:09,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:09,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:09,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:09,783 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:09,783 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:09,892 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:09,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597653403] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:09,892 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:09,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-29 23:13:09,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686408351] [2023-08-29 23:13:09,893 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:09,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:13:09,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:09,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:13:09,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:13:09,926 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:09,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 235 transitions, 3710 flow. Second operand has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:09,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:09,928 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:09,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:10,754 INFO L130 PetriNetUnfolder]: 3210/4633 cut-off events. [2023-08-29 23:13:10,755 INFO L131 PetriNetUnfolder]: For 58507/59236 co-relation queries the response was YES. [2023-08-29 23:13:10,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31483 conditions, 4633 events. 3210/4633 cut-off events. For 58507/59236 co-relation queries the response was YES. Maximal size of possible extension queue 230. Compared 22269 event pairs, 660 based on Foata normal form. 208/4668 useless extension candidates. Maximal degree in co-relation 31437. Up to 4109 conditions per place. [2023-08-29 23:13:10,813 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 244 selfloop transitions, 60 changer transitions 2/319 dead transitions. [2023-08-29 23:13:10,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 319 transitions, 5206 flow [2023-08-29 23:13:10,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:10,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 990 transitions. [2023-08-29 23:13:10,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49107142857142855 [2023-08-29 23:13:10,815 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 990 transitions. [2023-08-29 23:13:10,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 990 transitions. [2023-08-29 23:13:10,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:10,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 990 transitions. [2023-08-29 23:13:10,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.0) internal successors, (990), 9 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:10,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:10,820 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:10,820 INFO L175 Difference]: Start difference. First operand has 121 places, 235 transitions, 3710 flow. Second operand 9 states and 990 transitions. [2023-08-29 23:13:10,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 319 transitions, 5206 flow [2023-08-29 23:13:10,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 319 transitions, 4904 flow, removed 124 selfloop flow, removed 2 redundant places. [2023-08-29 23:13:10,988 INFO L231 Difference]: Finished difference. Result has 131 places, 271 transitions, 4313 flow [2023-08-29 23:13:10,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4313, PETRI_PLACES=131, PETRI_TRANSITIONS=271} [2023-08-29 23:13:10,989 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 89 predicate places. [2023-08-29 23:13:10,989 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 271 transitions, 4313 flow [2023-08-29 23:13:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:10,990 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:10,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:11,195 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,SelfDestructingSolverStorable23 [2023-08-29 23:13:11,196 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)] === [2023-08-29 23:13:11,197 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:11,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1174161011, now seen corresponding path program 6 times [2023-08-29 23:13:11,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:11,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335317758] [2023-08-29 23:13:11,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:11,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:11,423 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:11,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:11,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335317758] [2023-08-29 23:13:11,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335317758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:11,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537100462] [2023-08-29 23:13:11,424 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 23:13:11,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:11,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:11,425 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) [2023-08-29 23:13:11,435 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 23:13:11,555 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-29 23:13:11,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:11,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 23:13:11,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:11,667 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:11,667 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:11,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:11,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537100462] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:11,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:11,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-08-29 23:13:11,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591614727] [2023-08-29 23:13:11,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:11,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-29 23:13:11,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:11,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-29 23:13:11,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-29 23:13:11,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:11,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 271 transitions, 4313 flow. Second operand has 10 states, 10 states have (on average 104.6) internal successors, (1046), 10 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:11,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:11,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:11,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:12,737 INFO L130 PetriNetUnfolder]: 3544/5123 cut-off events. [2023-08-29 23:13:12,737 INFO L131 PetriNetUnfolder]: For 67225/67962 co-relation queries the response was YES. [2023-08-29 23:13:12,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34738 conditions, 5123 events. 3544/5123 cut-off events. For 67225/67962 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 25150 event pairs, 812 based on Foata normal form. 222/5174 useless extension candidates. Maximal degree in co-relation 34687. Up to 4567 conditions per place. [2023-08-29 23:13:12,793 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 265 selfloop transitions, 60 changer transitions 2/340 dead transitions. [2023-08-29 23:13:12,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 340 transitions, 5599 flow [2023-08-29 23:13:12,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-29 23:13:12,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-29 23:13:12,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 992 transitions. [2023-08-29 23:13:12,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49206349206349204 [2023-08-29 23:13:12,795 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 992 transitions. [2023-08-29 23:13:12,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 992 transitions. [2023-08-29 23:13:12,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:12,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 992 transitions. [2023-08-29 23:13:12,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 110.22222222222223) internal successors, (992), 9 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:12,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:12,800 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 224.0) internal successors, (2240), 10 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:12,800 INFO L175 Difference]: Start difference. First operand has 131 places, 271 transitions, 4313 flow. Second operand 9 states and 992 transitions. [2023-08-29 23:13:12,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 340 transitions, 5599 flow [2023-08-29 23:13:12,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 340 transitions, 5201 flow, removed 187 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:12,913 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 4509 flow [2023-08-29 23:13:12,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=3915, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4509, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2023-08-29 23:13:12,914 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 99 predicate places. [2023-08-29 23:13:12,914 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 4509 flow [2023-08-29 23:13:12,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 104.6) internal successors, (1046), 10 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:12,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:12,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:12,921 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:13,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-08-29 23:13:13,122 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)] === [2023-08-29 23:13:13,122 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:13,122 INFO L85 PathProgramCache]: Analyzing trace with hash -14383625, now seen corresponding path program 7 times [2023-08-29 23:13:13,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:13,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619410883] [2023-08-29 23:13:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:13,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:13,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:13,238 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:13,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619410883] [2023-08-29 23:13:13,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619410883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:13,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046748103] [2023-08-29 23:13:13,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 23:13:13,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:13,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:13,241 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) [2023-08-29 23:13:13,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 23:13:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:13,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:13,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:13,397 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:13,398 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:13,458 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:13,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046748103] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:13,459 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:13,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-29 23:13:13,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275793118] [2023-08-29 23:13:13,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:13,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:13:13,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:13,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:13:13,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-29 23:13:13,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:13,548 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 4509 flow. Second operand has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:13,548 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:13,548 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:13,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:15,159 INFO L130 PetriNetUnfolder]: 6669/9752 cut-off events. [2023-08-29 23:13:15,160 INFO L131 PetriNetUnfolder]: For 117175/117636 co-relation queries the response was YES. [2023-08-29 23:13:15,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62864 conditions, 9752 events. 6669/9752 cut-off events. For 117175/117636 co-relation queries the response was YES. Maximal size of possible extension queue 366. Compared 51785 event pairs, 1233 based on Foata normal form. 265/9957 useless extension candidates. Maximal degree in co-relation 62809. Up to 2777 conditions per place. [2023-08-29 23:13:15,269 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 409 selfloop transitions, 121 changer transitions 0/534 dead transitions. [2023-08-29 23:13:15,269 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 534 transitions, 8665 flow [2023-08-29 23:13:15,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:13:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:13:15,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-08-29 23:13:15,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 23:13:15,272 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-08-29 23:13:15,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-08-29 23:13:15,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:15,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-08-29 23:13:15,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:15,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:15,278 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:15,278 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 4509 flow. Second operand 10 states and 1120 transitions. [2023-08-29 23:13:15,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 534 transitions, 8665 flow [2023-08-29 23:13:15,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 534 transitions, 8055 flow, removed 280 selfloop flow, removed 2 redundant places. [2023-08-29 23:13:15,532 INFO L231 Difference]: Finished difference. Result has 155 places, 342 transitions, 5373 flow [2023-08-29 23:13:15,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=4134, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5373, PETRI_PLACES=155, PETRI_TRANSITIONS=342} [2023-08-29 23:13:15,533 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2023-08-29 23:13:15,533 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 342 transitions, 5373 flow [2023-08-29 23:13:15,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 103.0) internal successors, (1236), 12 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:15,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:15,533 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:15,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-29 23:13:15,739 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,SelfDestructingSolverStorable25 [2023-08-29 23:13:15,739 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)] === [2023-08-29 23:13:15,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:15,739 INFO L85 PathProgramCache]: Analyzing trace with hash -618251952, now seen corresponding path program 8 times [2023-08-29 23:13:15,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:15,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76845685] [2023-08-29 23:13:15,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:15,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:15,889 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:15,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76845685] [2023-08-29 23:13:15,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76845685] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:15,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762395464] [2023-08-29 23:13:15,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:13:15,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:15,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:15,892 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) [2023-08-29 23:13:15,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 23:13:15,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:13:15,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:15,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:15,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:16,058 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:16,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:16,128 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:16,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762395464] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:16,129 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:16,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-08-29 23:13:16,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510043157] [2023-08-29 23:13:16,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:16,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:13:16,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:16,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:13:16,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-29 23:13:16,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:16,238 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 342 transitions, 5373 flow. Second operand has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 12 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:16,238 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:16,239 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:16,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:18,240 INFO L130 PetriNetUnfolder]: 7276/10859 cut-off events. [2023-08-29 23:13:18,240 INFO L131 PetriNetUnfolder]: For 163345/163868 co-relation queries the response was YES. [2023-08-29 23:13:18,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70560 conditions, 10859 events. 7276/10859 cut-off events. For 163345/163868 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 62403 event pairs, 1134 based on Foata normal form. 426/11239 useless extension candidates. Maximal degree in co-relation 70497. Up to 3800 conditions per place. [2023-08-29 23:13:18,342 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 593 selfloop transitions, 175 changer transitions 0/772 dead transitions. [2023-08-29 23:13:18,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 772 transitions, 12200 flow [2023-08-29 23:13:18,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 23:13:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 23:13:18,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1324 transitions. [2023-08-29 23:13:18,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49255952380952384 [2023-08-29 23:13:18,353 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1324 transitions. [2023-08-29 23:13:18,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1324 transitions. [2023-08-29 23:13:18,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:18,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1324 transitions. [2023-08-29 23:13:18,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 110.33333333333333) internal successors, (1324), 12 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:18,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:18,365 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 224.0) internal successors, (2912), 13 states have internal predecessors, (2912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:18,365 INFO L175 Difference]: Start difference. First operand has 155 places, 342 transitions, 5373 flow. Second operand 12 states and 1324 transitions. [2023-08-29 23:13:18,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 772 transitions, 12200 flow [2023-08-29 23:13:18,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 772 transitions, 12033 flow, removed 39 selfloop flow, removed 2 redundant places. [2023-08-29 23:13:18,772 INFO L231 Difference]: Finished difference. Result has 170 places, 437 transitions, 7365 flow [2023-08-29 23:13:18,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=5238, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=7365, PETRI_PLACES=170, PETRI_TRANSITIONS=437} [2023-08-29 23:13:18,773 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 128 predicate places. [2023-08-29 23:13:18,773 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 437 transitions, 7365 flow [2023-08-29 23:13:18,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.58333333333333) internal successors, (1231), 12 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:18,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:18,774 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:18,780 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:18,979 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,SelfDestructingSolverStorable26 [2023-08-29 23:13:18,980 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)] === [2023-08-29 23:13:18,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1157066672, now seen corresponding path program 9 times [2023-08-29 23:13:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:18,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644274935] [2023-08-29 23:13:18,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:19,144 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:19,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644274935] [2023-08-29 23:13:19,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644274935] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:19,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101177166] [2023-08-29 23:13:19,145 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:13:19,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:19,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:19,149 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) [2023-08-29 23:13:19,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 23:13:19,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-29 23:13:19,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:19,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:19,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:19,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:19,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:19,473 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:19,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101177166] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:19,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:19,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 13 [2023-08-29 23:13:19,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980330536] [2023-08-29 23:13:19,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:19,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 23:13:19,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:19,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 23:13:19,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-08-29 23:13:19,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 224 [2023-08-29 23:13:19,593 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 437 transitions, 7365 flow. Second operand has 13 states, 13 states have (on average 100.61538461538461) internal successors, (1308), 13 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:19,593 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:19,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 224 [2023-08-29 23:13:19,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:23,195 INFO L130 PetriNetUnfolder]: 10860/16217 cut-off events. [2023-08-29 23:13:23,196 INFO L131 PetriNetUnfolder]: For 277191/277191 co-relation queries the response was YES. [2023-08-29 23:13:23,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122864 conditions, 16217 events. 10860/16217 cut-off events. For 277191/277191 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 97967 event pairs, 1393 based on Foata normal form. 136/16353 useless extension candidates. Maximal degree in co-relation 122795. Up to 4681 conditions per place. [2023-08-29 23:13:23,324 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 520 selfloop transitions, 350 changer transitions 0/870 dead transitions. [2023-08-29 23:13:23,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 870 transitions, 16215 flow [2023-08-29 23:13:23,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-29 23:13:23,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-29 23:13:23,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2054 transitions. [2023-08-29 23:13:23,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4826127819548872 [2023-08-29 23:13:23,328 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2054 transitions. [2023-08-29 23:13:23,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2054 transitions. [2023-08-29 23:13:23,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:23,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2054 transitions. [2023-08-29 23:13:23,332 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 108.10526315789474) internal successors, (2054), 19 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:23,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 224.0) internal successors, (4480), 20 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:23,336 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 224.0) internal successors, (4480), 20 states have internal predecessors, (4480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:23,337 INFO L175 Difference]: Start difference. First operand has 170 places, 437 transitions, 7365 flow. Second operand 19 states and 2054 transitions. [2023-08-29 23:13:23,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 870 transitions, 16215 flow [2023-08-29 23:13:24,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 870 transitions, 15393 flow, removed 309 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:24,417 INFO L231 Difference]: Finished difference. Result has 199 places, 599 transitions, 11602 flow [2023-08-29 23:13:24,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=6933, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=437, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11602, PETRI_PLACES=199, PETRI_TRANSITIONS=599} [2023-08-29 23:13:24,418 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 157 predicate places. [2023-08-29 23:13:24,418 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 599 transitions, 11602 flow [2023-08-29 23:13:24,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 100.61538461538461) internal successors, (1308), 13 states have internal predecessors, (1308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:24,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:24,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:24,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:24,624 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,SelfDestructingSolverStorable27 [2023-08-29 23:13:24,624 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)] === [2023-08-29 23:13:24,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:24,625 INFO L85 PathProgramCache]: Analyzing trace with hash -489516291, now seen corresponding path program 10 times [2023-08-29 23:13:24,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:24,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497680792] [2023-08-29 23:13:24,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:24,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:24,751 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:24,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497680792] [2023-08-29 23:13:24,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497680792] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:24,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285516529] [2023-08-29 23:13:24,752 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:13:24,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:24,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:24,753 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) [2023-08-29 23:13:24,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 23:13:24,840 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:13:24,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:24,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:24,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:24,899 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:24,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:24,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:24,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285516529] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:24,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:24,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-08-29 23:13:24,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497066693] [2023-08-29 23:13:24,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:24,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 23:13:24,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:24,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 23:13:24,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2023-08-29 23:13:25,093 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-29 23:13:25,094 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 599 transitions, 11602 flow. Second operand has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:25,094 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:25,094 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-29 23:13:25,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:30,702 INFO L130 PetriNetUnfolder]: 13212/19753 cut-off events. [2023-08-29 23:13:30,702 INFO L131 PetriNetUnfolder]: For 484622/484622 co-relation queries the response was YES. [2023-08-29 23:13:30,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172131 conditions, 19753 events. 13212/19753 cut-off events. For 484622/484622 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 124207 event pairs, 945 based on Foata normal form. 500/20253 useless extension candidates. Maximal degree in co-relation 172049. Up to 6379 conditions per place. [2023-08-29 23:13:30,927 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 853 selfloop transitions, 761 changer transitions 56/1670 dead transitions. [2023-08-29 23:13:30,927 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 1670 transitions, 36603 flow [2023-08-29 23:13:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-29 23:13:30,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-29 23:13:30,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 5294 transitions. [2023-08-29 23:13:30,935 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4634103641456583 [2023-08-29 23:13:30,935 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 5294 transitions. [2023-08-29 23:13:30,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 5294 transitions. [2023-08-29 23:13:30,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:30,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 5294 transitions. [2023-08-29 23:13:30,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 103.80392156862744) internal successors, (5294), 51 states have internal predecessors, (5294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:30,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 224.0) internal successors, (11648), 52 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:30,960 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 224.0) internal successors, (11648), 52 states have internal predecessors, (11648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:30,960 INFO L175 Difference]: Start difference. First operand has 199 places, 599 transitions, 11602 flow. Second operand 51 states and 5294 transitions. [2023-08-29 23:13:30,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 1670 transitions, 36603 flow [2023-08-29 23:13:33,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 1670 transitions, 34650 flow, removed 785 selfloop flow, removed 1 redundant places. [2023-08-29 23:13:33,451 INFO L231 Difference]: Finished difference. Result has 279 places, 1054 transitions, 23044 flow [2023-08-29 23:13:33,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=10552, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=304, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=23044, PETRI_PLACES=279, PETRI_TRANSITIONS=1054} [2023-08-29 23:13:33,452 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 237 predicate places. [2023-08-29 23:13:33,452 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 1054 transitions, 23044 flow [2023-08-29 23:13:33,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:33,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:33,453 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:33,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 23:13:33,654 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,SelfDestructingSolverStorable28 [2023-08-29 23:13:33,655 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)] === [2023-08-29 23:13:33,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:33,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1282512432, now seen corresponding path program 11 times [2023-08-29 23:13:33,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:33,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543829180] [2023-08-29 23:13:33,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:33,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:33,787 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:13:33,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:33,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543829180] [2023-08-29 23:13:33,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543829180] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:33,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017264719] [2023-08-29 23:13:33,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:13:33,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:33,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:33,790 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) [2023-08-29 23:13:33,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-29 23:13:33,886 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:13:33,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:33,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:33,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:33,950 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:33,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:34,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017264719] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:34,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:34,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-08-29 23:13:34,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871115623] [2023-08-29 23:13:34,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:34,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-29 23:13:34,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:34,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-29 23:13:34,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-08-29 23:13:34,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-29 23:13:34,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 1054 transitions, 23044 flow. Second operand has 17 states, 17 states have (on average 98.88235294117646) internal successors, (1681), 17 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:34,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:34,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-29 23:13:34,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:13:44,573 INFO L130 PetriNetUnfolder]: 14807/22563 cut-off events. [2023-08-29 23:13:44,574 INFO L131 PetriNetUnfolder]: For 717652/717652 co-relation queries the response was YES. [2023-08-29 23:13:45,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218757 conditions, 22563 events. 14807/22563 cut-off events. For 717652/717652 co-relation queries the response was YES. Maximal size of possible extension queue 911. Compared 150453 event pairs, 767 based on Foata normal form. 526/23089 useless extension candidates. Maximal degree in co-relation 218644. Up to 7959 conditions per place. [2023-08-29 23:13:45,184 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1181 selfloop transitions, 1129 changer transitions 71/2381 dead transitions. [2023-08-29 23:13:45,184 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 2381 transitions, 50258 flow [2023-08-29 23:13:45,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2023-08-29 23:13:45,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2023-08-29 23:13:45,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 11157 transitions. [2023-08-29 23:13:45,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4654956608811749 [2023-08-29 23:13:45,200 INFO L72 ComplementDD]: Start complementDD. Operand 107 states and 11157 transitions. [2023-08-29 23:13:45,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 11157 transitions. [2023-08-29 23:13:45,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:13:45,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 107 states and 11157 transitions. [2023-08-29 23:13:45,221 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 108 states, 107 states have (on average 104.27102803738318) internal successors, (11157), 107 states have internal predecessors, (11157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:45,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 108 states, 108 states have (on average 224.0) internal successors, (24192), 108 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:45,249 INFO L81 ComplementDD]: Finished complementDD. Result has 108 states, 108 states have (on average 224.0) internal successors, (24192), 108 states have internal predecessors, (24192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:45,249 INFO L175 Difference]: Start difference. First operand has 279 places, 1054 transitions, 23044 flow. Second operand 107 states and 11157 transitions. [2023-08-29 23:13:45,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 2381 transitions, 50258 flow [2023-08-29 23:13:51,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 374 places, 2381 transitions, 44039 flow, removed 2459 selfloop flow, removed 8 redundant places. [2023-08-29 23:13:51,120 INFO L231 Difference]: Finished difference. Result has 430 places, 1445 transitions, 32059 flow [2023-08-29 23:13:51,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=19107, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1037, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=745, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=107, PETRI_FLOW=32059, PETRI_PLACES=430, PETRI_TRANSITIONS=1445} [2023-08-29 23:13:51,122 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 388 predicate places. [2023-08-29 23:13:51,122 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1445 transitions, 32059 flow [2023-08-29 23:13:51,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 98.88235294117646) internal successors, (1681), 17 states have internal predecessors, (1681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:51,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:13:51,122 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:13:51,127 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-29 23:13:51,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:51,323 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)] === [2023-08-29 23:13:51,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:13:51,323 INFO L85 PathProgramCache]: Analyzing trace with hash -595300895, now seen corresponding path program 12 times [2023-08-29 23:13:51,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:13:51,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836726729] [2023-08-29 23:13:51,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:13:51,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:13:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:13:51,428 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:51,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:13:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836726729] [2023-08-29 23:13:51,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836726729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:13:51,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841944406] [2023-08-29 23:13:51,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-29 23:13:51,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:13:51,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:13:51,433 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) [2023-08-29 23:13:51,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-29 23:13:51,538 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-29 23:13:51,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:13:51,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:13:51,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:13:51,585 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:51,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:13:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:13:51,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841944406] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:13:51,646 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:13:51,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-08-29 23:13:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561661870] [2023-08-29 23:13:51,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:13:51,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-29 23:13:51,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:13:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-29 23:13:51,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-08-29 23:13:51,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 224 [2023-08-29 23:13:51,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1445 transitions, 32059 flow. Second operand has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 12 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:13:51,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:13:51,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 224 [2023-08-29 23:13:51,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:14:00,566 INFO L130 PetriNetUnfolder]: 15386/23331 cut-off events. [2023-08-29 23:14:00,566 INFO L131 PetriNetUnfolder]: For 922974/923153 co-relation queries the response was YES. [2023-08-29 23:14:01,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242435 conditions, 23331 events. 15386/23331 cut-off events. For 922974/923153 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 155087 event pairs, 2266 based on Foata normal form. 198/23464 useless extension candidates. Maximal degree in co-relation 242270. Up to 8733 conditions per place. [2023-08-29 23:14:01,600 INFO L137 encePairwiseOnDemand]: 219/224 looper letters, 1112 selfloop transitions, 777 changer transitions 0/1921 dead transitions. [2023-08-29 23:14:01,600 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 1921 transitions, 47674 flow [2023-08-29 23:14:01,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 23:14:01,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 23:14:01,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1120 transitions. [2023-08-29 23:14:01,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 23:14:01,603 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1120 transitions. [2023-08-29 23:14:01,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1120 transitions. [2023-08-29 23:14:01,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:14:01,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1120 transitions. [2023-08-29 23:14:01,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 112.0) internal successors, (1120), 10 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:01,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:01,607 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 224.0) internal successors, (2464), 11 states have internal predecessors, (2464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:01,608 INFO L175 Difference]: Start difference. First operand has 430 places, 1445 transitions, 32059 flow. Second operand 10 states and 1120 transitions. [2023-08-29 23:14:01,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 1921 transitions, 47674 flow [2023-08-29 23:14:11,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 1921 transitions, 39159 flow, removed 3216 selfloop flow, removed 15 redundant places. [2023-08-29 23:14:12,710 INFO L231 Difference]: Finished difference. Result has 426 places, 1554 transitions, 30441 flow [2023-08-29 23:14:12,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=25965, PETRI_DIFFERENCE_MINUEND_PLACES=414, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=684, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=723, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=30441, PETRI_PLACES=426, PETRI_TRANSITIONS=1554} [2023-08-29 23:14:12,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 384 predicate places. [2023-08-29 23:14:12,711 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 1554 transitions, 30441 flow [2023-08-29 23:14:12,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 102.66666666666667) internal successors, (1232), 12 states have internal predecessors, (1232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:12,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:14:12,711 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:14:12,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-29 23:14:12,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:14:12,912 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)] === [2023-08-29 23:14:12,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:14:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 2031438389, now seen corresponding path program 13 times [2023-08-29 23:14:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:14:12,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318521459] [2023-08-29 23:14:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:14:12,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:14:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:14:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:14:13,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:14:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318521459] [2023-08-29 23:14:13,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318521459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:14:13,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922677816] [2023-08-29 23:14:13,043 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-29 23:14:13,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:14:13,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:14:13,044 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) [2023-08-29 23:14:13,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-29 23:14:13,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:14:13,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:14:13,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:14:13,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:14:13,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:14:13,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:14:13,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922677816] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:14:13,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:14:13,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-08-29 23:14:13,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033749756] [2023-08-29 23:14:13,276 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:14:13,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-29 23:14:13,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:14:13,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-29 23:14:13,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-08-29 23:14:13,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 224 [2023-08-29 23:14:13,363 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 1554 transitions, 30441 flow. Second operand has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:13,363 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:14:13,363 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 224 [2023-08-29 23:14:13,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:14:30,863 INFO L130 PetriNetUnfolder]: 26105/40145 cut-off events. [2023-08-29 23:14:30,863 INFO L131 PetriNetUnfolder]: For 1408892/1409230 co-relation queries the response was YES. [2023-08-29 23:14:32,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370992 conditions, 40145 events. 26105/40145 cut-off events. For 1408892/1409230 co-relation queries the response was YES. Maximal size of possible extension queue 1743. Compared 299087 event pairs, 930 based on Foata normal form. 591/40722 useless extension candidates. Maximal degree in co-relation 370827. Up to 14403 conditions per place. [2023-08-29 23:14:32,470 INFO L137 encePairwiseOnDemand]: 218/224 looper letters, 2344 selfloop transitions, 1196 changer transitions 27/3610 dead transitions. [2023-08-29 23:14:32,470 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 3610 transitions, 78265 flow [2023-08-29 23:14:32,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-08-29 23:14:32,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-08-29 23:14:32,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 3069 transitions. [2023-08-29 23:14:32,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893176020408163 [2023-08-29 23:14:32,474 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 3069 transitions. [2023-08-29 23:14:32,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 3069 transitions. [2023-08-29 23:14:32,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:14:32,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 3069 transitions. [2023-08-29 23:14:32,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 109.60714285714286) internal successors, (3069), 28 states have internal predecessors, (3069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:32,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:32,483 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 224.0) internal successors, (6496), 29 states have internal predecessors, (6496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:32,483 INFO L175 Difference]: Start difference. First operand has 426 places, 1554 transitions, 30441 flow. Second operand 28 states and 3069 transitions. [2023-08-29 23:14:32,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 3610 transitions, 78265 flow [2023-08-29 23:14:44,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 3610 transitions, 77188 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-29 23:14:44,545 INFO L231 Difference]: Finished difference. Result has 461 places, 2036 transitions, 42675 flow [2023-08-29 23:14:44,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=29447, PETRI_DIFFERENCE_MINUEND_PLACES=424, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=797, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=669, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=42675, PETRI_PLACES=461, PETRI_TRANSITIONS=2036} [2023-08-29 23:14:44,547 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 419 predicate places. [2023-08-29 23:14:44,547 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 2036 transitions, 42675 flow [2023-08-29 23:14:44,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 101.57142857142857) internal successors, (1422), 14 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:44,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:14:44,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:14:44,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-29 23:14:44,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:14:44,753 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)] === [2023-08-29 23:14:44,754 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:14:44,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1947520715, now seen corresponding path program 14 times [2023-08-29 23:14:44,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:14:44,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084610945] [2023-08-29 23:14:44,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:14:44,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:14:44,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:14:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:14:44,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:14:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084610945] [2023-08-29 23:14:44,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084610945] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:14:44,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546125804] [2023-08-29 23:14:44,860 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 23:14:44,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:14:44,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:14:44,865 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) [2023-08-29 23:14:44,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-29 23:14:44,966 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:14:44,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:14:44,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:14:44,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:14:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:14:45,038 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:14:45,107 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:14:45,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546125804] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:14:45,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:14:45,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-29 23:14:45,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610587814] [2023-08-29 23:14:45,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:14:45,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:14:45,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:14:45,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:14:45,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:14:45,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-29 23:14:45,211 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 2036 transitions, 42675 flow. Second operand has 15 states, 15 states have (on average 98.86666666666666) internal successors, (1483), 15 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:14:45,211 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:14:45,211 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-29 23:14:45,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:15:10,159 INFO L130 PetriNetUnfolder]: 30083/45975 cut-off events. [2023-08-29 23:15:10,159 INFO L131 PetriNetUnfolder]: For 2011425/2011425 co-relation queries the response was YES. [2023-08-29 23:15:11,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475545 conditions, 45975 events. 30083/45975 cut-off events. For 2011425/2011425 co-relation queries the response was YES. Maximal size of possible extension queue 2043. Compared 342331 event pairs, 3786 based on Foata normal form. 1430/47405 useless extension candidates. Maximal degree in co-relation 475369. Up to 17887 conditions per place. [2023-08-29 23:15:12,070 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 1759 selfloop transitions, 1813 changer transitions 8/3580 dead transitions. [2023-08-29 23:15:12,071 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 3580 transitions, 82737 flow [2023-08-29 23:15:12,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-08-29 23:15:12,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-08-29 23:15:12,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 6330 transitions. [2023-08-29 23:15:12,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47098214285714285 [2023-08-29 23:15:12,077 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 6330 transitions. [2023-08-29 23:15:12,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 6330 transitions. [2023-08-29 23:15:12,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:15:12,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 6330 transitions. [2023-08-29 23:15:12,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 105.5) internal successors, (6330), 60 states have internal predecessors, (6330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:15:12,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 224.0) internal successors, (13664), 61 states have internal predecessors, (13664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:15:12,095 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 224.0) internal successors, (13664), 61 states have internal predecessors, (13664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:15:12,096 INFO L175 Difference]: Start difference. First operand has 461 places, 2036 transitions, 42675 flow. Second operand 60 states and 6330 transitions. [2023-08-29 23:15:12,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 3580 transitions, 82737 flow [2023-08-29 23:15:38,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 514 places, 3580 transitions, 79067 flow, removed 1185 selfloop flow, removed 5 redundant places. [2023-08-29 23:15:38,841 INFO L231 Difference]: Finished difference. Result has 544 places, 2619 transitions, 61880 flow [2023-08-29 23:15:38,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=39956, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2016, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1232, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=691, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=61880, PETRI_PLACES=544, PETRI_TRANSITIONS=2619} [2023-08-29 23:15:38,843 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 502 predicate places. [2023-08-29 23:15:38,843 INFO L495 AbstractCegarLoop]: Abstraction has has 544 places, 2619 transitions, 61880 flow [2023-08-29 23:15:38,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 98.86666666666666) internal successors, (1483), 15 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:15:38,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:15:38,844 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:15:38,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-29 23:15:39,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:15:39,050 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)] === [2023-08-29 23:15:39,050 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:15:39,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1987505746, now seen corresponding path program 15 times [2023-08-29 23:15:39,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:15:39,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096764397] [2023-08-29 23:15:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:15:39,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:15:39,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:15:39,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:15:39,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:15:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096764397] [2023-08-29 23:15:39,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096764397] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:15:39,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128665540] [2023-08-29 23:15:39,187 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 23:15:39,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:15:39,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:15:39,189 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) [2023-08-29 23:15:39,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-29 23:15:39,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-29 23:15:39,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:15:39,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:15:39,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:15:39,356 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:15:39,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:15:39,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:15:39,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128665540] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:15:39,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:15:39,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 16 [2023-08-29 23:15:39,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756640853] [2023-08-29 23:15:39,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:15:39,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-29 23:15:39,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:15:39,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-29 23:15:39,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2023-08-29 23:15:39,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 224 [2023-08-29 23:15:39,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 544 places, 2619 transitions, 61880 flow. Second operand has 16 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:15:39,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:15:39,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 224 [2023-08-29 23:15:39,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:16:28,713 INFO L130 PetriNetUnfolder]: 43785/68036 cut-off events. [2023-08-29 23:16:28,713 INFO L131 PetriNetUnfolder]: For 3586701/3586701 co-relation queries the response was YES. [2023-08-29 23:16:32,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 761437 conditions, 68036 events. 43785/68036 cut-off events. For 3586701/3586701 co-relation queries the response was YES. Maximal size of possible extension queue 3148. Compared 550741 event pairs, 4315 based on Foata normal form. 964/69000 useless extension candidates. Maximal degree in co-relation 761233. Up to 26725 conditions per place. [2023-08-29 23:16:32,529 INFO L137 encePairwiseOnDemand]: 217/224 looper letters, 1634 selfloop transitions, 2598 changer transitions 17/4249 dead transitions. [2023-08-29 23:16:32,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 4249 transitions, 110021 flow [2023-08-29 23:16:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-29 23:16:32,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-29 23:16:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 4251 transitions. [2023-08-29 23:16:32,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4744419642857143 [2023-08-29 23:16:32,533 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 4251 transitions. [2023-08-29 23:16:32,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 4251 transitions. [2023-08-29 23:16:32,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:16:32,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 4251 transitions. [2023-08-29 23:16:32,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 106.275) internal successors, (4251), 40 states have internal predecessors, (4251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:16:32,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:16:32,544 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 224.0) internal successors, (9184), 41 states have internal predecessors, (9184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:16:32,544 INFO L175 Difference]: Start difference. First operand has 544 places, 2619 transitions, 61880 flow. Second operand 40 states and 4251 transitions. [2023-08-29 23:16:32,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 583 places, 4249 transitions, 110021 flow [2023-08-29 23:17:41,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 576 places, 4249 transitions, 98382 flow, removed 5000 selfloop flow, removed 7 redundant places. [2023-08-29 23:17:41,924 INFO L231 Difference]: Finished difference. Result has 597 places, 3480 transitions, 85119 flow [2023-08-29 23:17:41,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=54914, PETRI_DIFFERENCE_MINUEND_PLACES=537, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1816, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=661, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=85119, PETRI_PLACES=597, PETRI_TRANSITIONS=3480} [2023-08-29 23:17:41,927 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 555 predicate places. [2023-08-29 23:17:41,928 INFO L495 AbstractCegarLoop]: Abstraction has has 597 places, 3480 transitions, 85119 flow [2023-08-29 23:17:41,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:41,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:17:41,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:17:41,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-29 23:17:42,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:42,134 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)] === [2023-08-29 23:17:42,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:17:42,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1718755713, now seen corresponding path program 16 times [2023-08-29 23:17:42,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:17:42,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443111455] [2023-08-29 23:17:42,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:17:42,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:17:42,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:17:42,266 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 23:17:42,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:17:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443111455] [2023-08-29 23:17:42,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443111455] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:17:42,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308839619] [2023-08-29 23:17:42,267 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 23:17:42,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:17:42,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:17:42,269 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) [2023-08-29 23:17:42,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-29 23:17:42,368 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 23:17:42,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:17:42,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-29 23:17:42,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:17:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:42,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:17:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:17:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308839619] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:17:42,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:17:42,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-08-29 23:17:42,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677818081] [2023-08-29 23:17:42,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:17:42,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:17:42,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:17:42,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:17:42,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:17:42,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-29 23:17:42,640 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 597 places, 3480 transitions, 85119 flow. Second operand has 15 states, 15 states have (on average 99.46666666666667) internal successors, (1492), 15 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:17:42,640 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:17:42,640 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-29 23:17:42,640 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:19:10,245 INFO L130 PetriNetUnfolder]: 61064/95385 cut-off events. [2023-08-29 23:19:10,246 INFO L131 PetriNetUnfolder]: For 6053328/6053328 co-relation queries the response was YES. [2023-08-29 23:19:15,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1127105 conditions, 95385 events. 61064/95385 cut-off events. For 6053328/6053328 co-relation queries the response was YES. Maximal size of possible extension queue 4814. Compared 815131 event pairs, 6669 based on Foata normal form. 1556/96941 useless extension candidates. Maximal degree in co-relation 1126881. Up to 36771 conditions per place. [2023-08-29 23:19:16,248 INFO L137 encePairwiseOnDemand]: 215/224 looper letters, 2719 selfloop transitions, 3390 changer transitions 5/6114 dead transitions. [2023-08-29 23:19:16,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 668 places, 6114 transitions, 168507 flow [2023-08-29 23:19:16,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2023-08-29 23:19:16,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2023-08-29 23:19:16,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 7582 transitions. [2023-08-29 23:19:16,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4701140873015873 [2023-08-29 23:19:16,254 INFO L72 ComplementDD]: Start complementDD. Operand 72 states and 7582 transitions. [2023-08-29 23:19:16,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 72 states and 7582 transitions. [2023-08-29 23:19:16,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:19:16,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 72 states and 7582 transitions. [2023-08-29 23:19:16,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 73 states, 72 states have (on average 105.30555555555556) internal successors, (7582), 72 states have internal predecessors, (7582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:19:16,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 73 states, 73 states have (on average 224.0) internal successors, (16352), 73 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:19:16,276 INFO L81 ComplementDD]: Finished complementDD. Result has 73 states, 73 states have (on average 224.0) internal successors, (16352), 73 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:19:16,276 INFO L175 Difference]: Start difference. First operand has 597 places, 3480 transitions, 85119 flow. Second operand 72 states and 7582 transitions. [2023-08-29 23:19:16,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 668 places, 6114 transitions, 168507 flow [2023-08-29 23:23:00,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 651 places, 6114 transitions, 161539 flow, removed 2658 selfloop flow, removed 17 redundant places. [2023-08-29 23:23:00,992 INFO L231 Difference]: Finished difference. Result has 687 places, 4952 transitions, 135723 flow [2023-08-29 23:23:00,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=224, PETRI_DIFFERENCE_MINUEND_FLOW=80746, PETRI_DIFFERENCE_MINUEND_PLACES=580, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=72, PETRI_FLOW=135723, PETRI_PLACES=687, PETRI_TRANSITIONS=4952} [2023-08-29 23:23:00,997 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 645 predicate places. [2023-08-29 23:23:00,997 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 4952 transitions, 135723 flow [2023-08-29 23:23:00,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 99.46666666666667) internal successors, (1492), 15 states have internal predecessors, (1492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:00,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 23:23:00,999 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 23:23:01,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-29 23:23:01,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:23:01,205 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)] === [2023-08-29 23:23:01,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 23:23:01,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1355912132, now seen corresponding path program 17 times [2023-08-29 23:23:01,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 23:23:01,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918194001] [2023-08-29 23:23:01,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 23:23:01,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 23:23:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 23:23:01,334 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:01,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 23:23:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918194001] [2023-08-29 23:23:01,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918194001] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 23:23:01,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790306566] [2023-08-29 23:23:01,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-29 23:23:01,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 23:23:01,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 23:23:01,337 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) [2023-08-29 23:23:01,360 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-29 23:23:01,424 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 23:23:01,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 23:23:01,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-29 23:23:01,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 23:23:01,523 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:01,523 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 23:23:01,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 23:23:01,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790306566] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 23:23:01,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 23:23:01,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 15 [2023-08-29 23:23:01,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626663770] [2023-08-29 23:23:01,619 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 23:23:01,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-29 23:23:01,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 23:23:01,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-29 23:23:01,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2023-08-29 23:23:01,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 224 [2023-08-29 23:23:01,730 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 4952 transitions, 135723 flow. Second operand has 15 states, 15 states have (on average 98.33333333333333) internal successors, (1475), 15 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:23:01,730 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 23:23:01,730 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 224 [2023-08-29 23:23:01,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 23:25:17,363 INFO L130 PetriNetUnfolder]: 60731/94829 cut-off events. [2023-08-29 23:25:17,363 INFO L131 PetriNetUnfolder]: For 7038378/7038378 co-relation queries the response was YES. [2023-08-29 23:25:23,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1197627 conditions, 94829 events. 60731/94829 cut-off events. For 7038378/7038378 co-relation queries the response was YES. Maximal size of possible extension queue 4764. Compared 815430 event pairs, 2837 based on Foata normal form. 552/95381 useless extension candidates. Maximal degree in co-relation 1197377. Up to 36123 conditions per place. [2023-08-29 23:25:24,028 INFO L137 encePairwiseOnDemand]: 216/224 looper letters, 2968 selfloop transitions, 3027 changer transitions 18/6013 dead transitions. [2023-08-29 23:25:24,028 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 6013 transitions, 171359 flow [2023-08-29 23:25:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-29 23:25:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-29 23:25:24,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3020 transitions. [2023-08-29 23:25:24,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4649014778325123 [2023-08-29 23:25:24,031 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3020 transitions. [2023-08-29 23:25:24,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3020 transitions. [2023-08-29 23:25:24,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 23:25:24,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3020 transitions. [2023-08-29 23:25:24,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 104.13793103448276) internal successors, (3020), 29 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:25:24,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 224.0) internal successors, (6720), 30 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:25:24,039 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 224.0) internal successors, (6720), 30 states have internal predecessors, (6720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 23:25:24,040 INFO L175 Difference]: Start difference. First operand has 687 places, 4952 transitions, 135723 flow. Second operand 29 states and 3020 transitions. [2023-08-29 23:25:24,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 6013 transitions, 171359 flow Killed by 15