./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:44:36,033 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:44:36,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:44:36,067 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:44:36,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:44:36,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:44:36,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:44:36,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:44:36,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:44:36,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:44:36,082 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:44:36,083 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:44:36,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:44:36,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:44:36,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:44:36,087 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:44:36,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:44:36,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:44:36,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:44:36,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:44:36,097 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:44:36,098 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:44:36,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:44:36,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:44:36,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:44:36,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:44:36,106 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:44:36,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:44:36,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:44:36,109 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:44:36,109 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:44:36,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:44:36,112 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:44:36,113 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:44:36,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:44:36,113 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:44:36,114 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:44:36,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:44:36,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:44:36,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:44:36,116 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:44:36,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 03:44:36,142 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:44:36,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:44:36,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:44:36,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:44:36,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:44:36,144 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:44:36,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:44:36,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:44:36,145 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:44:36,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:44:36,145 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:44:36,145 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:44:36,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:44:36,147 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:44:36,147 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:44:36,147 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:44:36,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:44:36,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:44:36,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:44:36,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:44:36,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:44:36,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:44:36,148 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 03:44:36,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 03:44:36,148 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:44:36,149 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:44:36,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:44:36,149 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:44:36,149 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:44:36,393 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:44:36,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:44:36,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:44:36,421 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:44:36,421 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:44:36,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-30 03:44:37,338 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:44:37,610 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:44:37,610 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-30 03:44:37,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6a453f3/8c0dff566d3d4497a6d35e5ec415ee89/FLAGfd292f7d8 [2023-08-30 03:44:37,650 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d6a453f3/8c0dff566d3d4497a6d35e5ec415ee89 [2023-08-30 03:44:37,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:44:37,653 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:44:37,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:44:37,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:44:37,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:44:37,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:44:37" (1/1) ... [2023-08-30 03:44:37,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea7942a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:37, skipping insertion in model container [2023-08-30 03:44:37,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:44:37" (1/1) ... [2023-08-30 03:44:37,664 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:44:37,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:44:38,068 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:44:38,085 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:44:38,137 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:44:38,213 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:44:38,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38 WrapperNode [2023-08-30 03:44:38,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:44:38,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:44:38,216 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:44:38,216 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:44:38,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,246 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,274 INFO L138 Inliner]: procedures = 368, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 86 [2023-08-30 03:44:38,275 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:44:38,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:44:38,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:44:38,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:44:38,282 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,299 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,300 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,302 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:44:38,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:44:38,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:44:38,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:44:38,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (1/1) ... [2023-08-30 03:44:38,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:44:38,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:44:38,336 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:44:38,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:44:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:44:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 03:44:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:44:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:44:38,416 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 03:44:38,416 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 03:44:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 03:44:38,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:44:38,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:44:38,418 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:44:38,528 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:44:38,530 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:44:38,942 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:44:38,948 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:44:38,948 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:44:38,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:44:38 BoogieIcfgContainer [2023-08-30 03:44:38,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:44:38,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:44:38,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:44:38,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:44:38,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:44:37" (1/3) ... [2023-08-30 03:44:38,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:44:38, skipping insertion in model container [2023-08-30 03:44:38,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:44:38" (2/3) ... [2023-08-30 03:44:38,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3f6ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:44:38, skipping insertion in model container [2023-08-30 03:44:38,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:44:38" (3/3) ... [2023-08-30 03:44:38,970 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-08-30 03:44:38,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:44:38,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-30 03:44:38,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:44:39,048 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:44:39,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 331 flow [2023-08-30 03:44:39,147 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-08-30 03:44:39,148 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:44:39,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 03:44:39,150 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 163 transitions, 331 flow [2023-08-30 03:44:39,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 162 transitions, 327 flow [2023-08-30 03:44:39,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:44:39,187 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 162 transitions, 327 flow [2023-08-30 03:44:39,188 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 162 transitions, 327 flow [2023-08-30 03:44:39,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 162 transitions, 327 flow [2023-08-30 03:44:39,213 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-08-30 03:44:39,213 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:44:39,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 162 events. 0/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 224 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 03:44:39,215 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-30 03:45:03,911 WARN L222 SmtUtils]: Spent 8.74s on a formula simplification. DAG size of input: 210 DAG size of output: 203 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:45:14,183 WARN L222 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 210 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:45:39,789 WARN L222 SmtUtils]: Spent 20.93s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:45:48,809 WARN L222 SmtUtils]: Spent 9.02s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:46:01,181 WARN L222 SmtUtils]: Spent 12.37s on a formula simplification. DAG size of input: 226 DAG size of output: 216 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:46:07,811 WARN L222 SmtUtils]: Spent 6.63s on a formula simplification that was a NOOP. DAG size: 212 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:46:13,523 WARN L222 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:46:22,570 WARN L222 SmtUtils]: Spent 6.58s on a formula simplification. DAG size of input: 207 DAG size of output: 198 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:48:05,748 WARN L222 SmtUtils]: Spent 1.62m on a formula simplification. DAG size of input: 345 DAG size of output: 333 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:48:36,072 WARN L222 SmtUtils]: Spent 30.32s on a formula simplification that was a NOOP. DAG size: 302 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:50:00,761 WARN L222 SmtUtils]: Spent 1.41m on a formula simplification. DAG size of input: 345 DAG size of output: 327 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:50:12,803 WARN L222 SmtUtils]: Spent 12.02s on a formula simplification that was a NOOP. DAG size: 293 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:50:12,811 INFO L134 LiptonReduction]: Checked pairs total: 13335 [2023-08-30 03:50:12,812 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-30 03:50:12,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 03:50:12,831 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;@2fd31ded, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 03:50:12,831 INFO L358 AbstractCegarLoop]: Starting to check reachability of 56 error locations. [2023-08-30 03:50:12,833 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 03:50:12,833 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:12,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:12,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 03:50:12,834 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:12,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:12,838 INFO L85 PathProgramCache]: Analyzing trace with hash 586, now seen corresponding path program 1 times [2023-08-30 03:50:12,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:12,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32463088] [2023-08-30 03:50:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:12,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:12,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:12,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32463088] [2023-08-30 03:50:12,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32463088] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:12,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:12,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 03:50:12,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731050155] [2023-08-30 03:50:12,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:12,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 03:50:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:12,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 03:50:12,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 03:50:12,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 384 [2023-08-30 03:50:12,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 63 transitions, 129 flow. Second operand has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 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) [2023-08-30 03:50:12,943 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:12,943 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 384 [2023-08-30 03:50:12,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:13,265 INFO L130 PetriNetUnfolder]: 192/480 cut-off events. [2023-08-30 03:50:13,266 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:13,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 480 events. 192/480 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2573 event pairs, 192 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 890. Up to 415 conditions per place. [2023-08-30 03:50:13,271 INFO L137 encePairwiseOnDemand]: 360/384 looper letters, 30 selfloop transitions, 0 changer transitions 0/39 dead transitions. [2023-08-30 03:50:13,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 141 flow [2023-08-30 03:50:13,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 03:50:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 03:50:13,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 378 transitions. [2023-08-30 03:50:13,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921875 [2023-08-30 03:50:13,285 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 378 transitions. [2023-08-30 03:50:13,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 378 transitions. [2023-08-30 03:50:13,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:13,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 378 transitions. [2023-08-30 03:50:13,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 189.0) internal successors, (378), 2 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:13,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:13,311 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 384.0) internal successors, (1152), 3 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:13,312 INFO L175 Difference]: Start difference. First operand has 67 places, 63 transitions, 129 flow. Second operand 2 states and 378 transitions. [2023-08-30 03:50:13,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 141 flow [2023-08-30 03:50:13,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:13,316 INFO L231 Difference]: Finished difference. Result has 43 places, 39 transitions, 80 flow [2023-08-30 03:50:13,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=80, PETRI_PLACES=43, PETRI_TRANSITIONS=39} [2023-08-30 03:50:13,322 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-08-30 03:50:13,322 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 39 transitions, 80 flow [2023-08-30 03:50:13,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.5) internal successors, (325), 2 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) [2023-08-30 03:50:13,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:13,323 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:50:13,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 03:50:13,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:13,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:13,331 INFO L85 PathProgramCache]: Analyzing trace with hash 604794, now seen corresponding path program 1 times [2023-08-30 03:50:13,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:13,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061008625] [2023-08-30 03:50:13,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:13,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:13,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:13,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061008625] [2023-08-30 03:50:13,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061008625] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:13,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:13,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:13,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217300506] [2023-08-30 03:50:13,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:13,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:13,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:14,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-08-30 03:50:14,047 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 39 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:14,048 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-08-30 03:50:14,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:14,622 INFO L130 PetriNetUnfolder]: 165/419 cut-off events. [2023-08-30 03:50:14,623 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:14,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 419 events. 165/419 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2224 event pairs, 165 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 779. Up to 358 conditions per place. [2023-08-30 03:50:14,626 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 27 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 03:50:14,626 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 132 flow [2023-08-30 03:50:14,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:14,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 486 transitions. [2023-08-30 03:50:14,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-30 03:50:14,630 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 486 transitions. [2023-08-30 03:50:14,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 486 transitions. [2023-08-30 03:50:14,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:14,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 486 transitions. [2023-08-30 03:50:14,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.0) internal successors, (486), 3 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,636 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,636 INFO L175 Difference]: Start difference. First operand has 43 places, 39 transitions, 80 flow. Second operand 3 states and 486 transitions. [2023-08-30 03:50:14,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 132 flow [2023-08-30 03:50:14,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 132 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 03:50:14,637 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 78 flow [2023-08-30 03:50:14,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-08-30 03:50:14,638 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -24 predicate places. [2023-08-30 03:50:14,638 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 78 flow [2023-08-30 03:50:14,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:14,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 03:50:14,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 03:50:14,639 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:14,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:14,640 INFO L85 PathProgramCache]: Analyzing trace with hash 604796, now seen corresponding path program 1 times [2023-08-30 03:50:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:14,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241682173] [2023-08-30 03:50:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:14,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:14,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:14,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241682173] [2023-08-30 03:50:14,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241682173] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:14,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:14,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:14,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860323455] [2023-08-30 03:50:14,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:14,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:14,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:14,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:14,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:14,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-08-30 03:50:14,953 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:14,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:14,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-08-30 03:50:14,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:15,126 INFO L130 PetriNetUnfolder]: 164/457 cut-off events. [2023-08-30 03:50:15,126 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:15,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 848 conditions, 457 events. 164/457 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2539 event pairs, 144 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 844. Up to 336 conditions per place. [2023-08-30 03:50:15,128 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 36 selfloop transitions, 5 changer transitions 0/48 dead transitions. [2023-08-30 03:50:15,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 48 transitions, 182 flow [2023-08-30 03:50:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:15,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:15,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 502 transitions. [2023-08-30 03:50:15,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4357638888888889 [2023-08-30 03:50:15,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 502 transitions. [2023-08-30 03:50:15,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 502 transitions. [2023-08-30 03:50:15,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:15,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 502 transitions. [2023-08-30 03:50:15,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.33333333333334) internal successors, (502), 3 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:15,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:15,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:15,133 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 78 flow. Second operand 3 states and 502 transitions. [2023-08-30 03:50:15,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 48 transitions, 182 flow [2023-08-30 03:50:15,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 48 transitions, 181 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:15,135 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 105 flow [2023-08-30 03:50:15,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-30 03:50:15,135 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-08-30 03:50:15,135 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 105 flow [2023-08-30 03:50:15,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:15,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:15,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:50:15,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 03:50:15,136 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:15,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:15,137 INFO L85 PathProgramCache]: Analyzing trace with hash 18746787, now seen corresponding path program 1 times [2023-08-30 03:50:15,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:15,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155278246] [2023-08-30 03:50:15,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:15,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:16,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:16,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155278246] [2023-08-30 03:50:16,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155278246] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:16,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:16,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:16,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113423811] [2023-08-30 03:50:16,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:16,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:16,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:16,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:16,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-08-30 03:50:16,178 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:16,178 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:16,178 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-08-30 03:50:16,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:16,400 INFO L130 PetriNetUnfolder]: 137/402 cut-off events. [2023-08-30 03:50:16,400 INFO L131 PetriNetUnfolder]: For 39/49 co-relation queries the response was YES. [2023-08-30 03:50:16,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 402 events. 137/402 cut-off events. For 39/49 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2294 event pairs, 33 based on Foata normal form. 14/282 useless extension candidates. Maximal degree in co-relation 782. Up to 248 conditions per place. [2023-08-30 03:50:16,402 INFO L137 encePairwiseOnDemand]: 380/384 looper letters, 37 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-30 03:50:16,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 49 transitions, 207 flow [2023-08-30 03:50:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-30 03:50:16,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4053819444444444 [2023-08-30 03:50:16,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-30 03:50:16,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-30 03:50:16,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:16,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-30 03:50:16,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 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) [2023-08-30 03:50:16,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:16,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:16,408 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 105 flow. Second operand 3 states and 467 transitions. [2023-08-30 03:50:16,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 49 transitions, 207 flow [2023-08-30 03:50:16,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 49 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:50:16,409 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 95 flow [2023-08-30 03:50:16,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=95, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-30 03:50:16,410 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -22 predicate places. [2023-08-30 03:50:16,410 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 95 flow [2023-08-30 03:50:16,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:16,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:16,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-30 03:50:16,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 03:50:16,411 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:16,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:16,412 INFO L85 PathProgramCache]: Analyzing trace with hash 18747251, now seen corresponding path program 1 times [2023-08-30 03:50:16,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802442819] [2023-08-30 03:50:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:16,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:16,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:16,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802442819] [2023-08-30 03:50:16,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802442819] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:16,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:16,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:16,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069667874] [2023-08-30 03:50:16,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:16,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:16,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:16,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:16,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:16,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-30 03:50:16,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 95 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:16,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:16,903 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-30 03:50:16,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:17,012 INFO L130 PetriNetUnfolder]: 134/388 cut-off events. [2023-08-30 03:50:17,013 INFO L131 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2023-08-30 03:50:17,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 780 conditions, 388 events. 134/388 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2184 event pairs, 48 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 774. Up to 261 conditions per place. [2023-08-30 03:50:17,015 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-30 03:50:17,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 214 flow [2023-08-30 03:50:17,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:17,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:17,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-30 03:50:17,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-08-30 03:50:17,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-30 03:50:17,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-30 03:50:17,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:17,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-30 03:50:17,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:17,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:17,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:17,020 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 95 flow. Second operand 3 states and 480 transitions. [2023-08-30 03:50:17,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 214 flow [2023-08-30 03:50:17,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 208 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:50:17,022 INFO L231 Difference]: Finished difference. Result has 46 places, 39 transitions, 122 flow [2023-08-30 03:50:17,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=46, PETRI_TRANSITIONS=39} [2023-08-30 03:50:17,022 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -21 predicate places. [2023-08-30 03:50:17,022 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 39 transitions, 122 flow [2023-08-30 03:50:17,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:17,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:17,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 03:50:17,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 03:50:17,023 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:17,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:17,024 INFO L85 PathProgramCache]: Analyzing trace with hash 581147541, now seen corresponding path program 1 times [2023-08-30 03:50:17,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:17,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918602468] [2023-08-30 03:50:17,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:17,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:17,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:17,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:17,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:17,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918602468] [2023-08-30 03:50:17,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918602468] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:17,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:17,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 03:50:17,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468268595] [2023-08-30 03:50:17,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:17,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 03:50:17,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:17,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 03:50:17,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 03:50:17,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 384 [2023-08-30 03:50:17,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:17,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:17,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 384 [2023-08-30 03:50:17,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:18,142 INFO L130 PetriNetUnfolder]: 144/409 cut-off events. [2023-08-30 03:50:18,156 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-08-30 03:50:18,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 898 conditions, 409 events. 144/409 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2318 event pairs, 38 based on Foata normal form. 15/306 useless extension candidates. Maximal degree in co-relation 891. Up to 267 conditions per place. [2023-08-30 03:50:18,159 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 49 selfloop transitions, 9 changer transitions 0/64 dead transitions. [2023-08-30 03:50:18,159 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 301 flow [2023-08-30 03:50:18,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:50:18,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:50:18,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 766 transitions. [2023-08-30 03:50:18,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39895833333333336 [2023-08-30 03:50:18,161 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 766 transitions. [2023-08-30 03:50:18,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 766 transitions. [2023-08-30 03:50:18,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:18,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 766 transitions. [2023-08-30 03:50:18,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.2) internal successors, (766), 5 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,166 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,166 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 122 flow. Second operand 5 states and 766 transitions. [2023-08-30 03:50:18,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 301 flow [2023-08-30 03:50:18,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:18,169 INFO L231 Difference]: Finished difference. Result has 52 places, 43 transitions, 179 flow [2023-08-30 03:50:18,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=52, PETRI_TRANSITIONS=43} [2023-08-30 03:50:18,171 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -15 predicate places. [2023-08-30 03:50:18,171 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 43 transitions, 179 flow [2023-08-30 03:50:18,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:18,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:18,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 03:50:18,173 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:18,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:18,173 INFO L85 PathProgramCache]: Analyzing trace with hash 150858139, now seen corresponding path program 1 times [2023-08-30 03:50:18,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:18,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224544719] [2023-08-30 03:50:18,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:18,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:18,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:18,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224544719] [2023-08-30 03:50:18,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224544719] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:18,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:18,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441884850] [2023-08-30 03:50:18,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:18,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:18,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:18,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:18,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:18,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 384 [2023-08-30 03:50:18,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:18,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 384 [2023-08-30 03:50:18,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:18,776 INFO L130 PetriNetUnfolder]: 133/379 cut-off events. [2023-08-30 03:50:18,777 INFO L131 PetriNetUnfolder]: For 135/137 co-relation queries the response was YES. [2023-08-30 03:50:18,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 905 conditions, 379 events. 133/379 cut-off events. For 135/137 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2066 event pairs, 115 based on Foata normal form. 0/268 useless extension candidates. Maximal degree in co-relation 896. Up to 274 conditions per place. [2023-08-30 03:50:18,779 INFO L137 encePairwiseOnDemand]: 377/384 looper letters, 34 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2023-08-30 03:50:18,779 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 281 flow [2023-08-30 03:50:18,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:18,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 499 transitions. [2023-08-30 03:50:18,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4331597222222222 [2023-08-30 03:50:18,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 499 transitions. [2023-08-30 03:50:18,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 499 transitions. [2023-08-30 03:50:18,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:18,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 499 transitions. [2023-08-30 03:50:18,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,787 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 179 flow. Second operand 3 states and 499 transitions. [2023-08-30 03:50:18,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 281 flow [2023-08-30 03:50:18,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 51 transitions, 271 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:18,793 INFO L231 Difference]: Finished difference. Result has 54 places, 44 transitions, 213 flow [2023-08-30 03:50:18,793 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=44} [2023-08-30 03:50:18,794 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -13 predicate places. [2023-08-30 03:50:18,794 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 44 transitions, 213 flow [2023-08-30 03:50:18,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:18,794 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:18,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 03:50:18,795 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:18,795 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:18,795 INFO L85 PathProgramCache]: Analyzing trace with hash 150858140, now seen corresponding path program 1 times [2023-08-30 03:50:18,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:18,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735013644] [2023-08-30 03:50:18,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:18,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:18,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:18,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:18,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735013644] [2023-08-30 03:50:18,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735013644] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:18,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:18,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:18,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324985417] [2023-08-30 03:50:18,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:18,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:18,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:18,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:18,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:18,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 384 [2023-08-30 03:50:18,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 44 transitions, 213 flow. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:18,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:18,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 384 [2023-08-30 03:50:18,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:19,187 INFO L130 PetriNetUnfolder]: 100/316 cut-off events. [2023-08-30 03:50:19,188 INFO L131 PetriNetUnfolder]: For 152/153 co-relation queries the response was YES. [2023-08-30 03:50:19,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 316 events. 100/316 cut-off events. For 152/153 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1686 event pairs, 96 based on Foata normal form. 10/257 useless extension candidates. Maximal degree in co-relation 826. Up to 255 conditions per place. [2023-08-30 03:50:19,190 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 30 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-08-30 03:50:19,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 42 transitions, 271 flow [2023-08-30 03:50:19,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:19,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:19,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2023-08-30 03:50:19,193 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4175347222222222 [2023-08-30 03:50:19,193 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2023-08-30 03:50:19,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2023-08-30 03:50:19,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:19,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2023-08-30 03:50:19,196 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,199 INFO L175 Difference]: Start difference. First operand has 54 places, 44 transitions, 213 flow. Second operand 3 states and 481 transitions. [2023-08-30 03:50:19,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 42 transitions, 271 flow [2023-08-30 03:50:19,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 42 transitions, 245 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:50:19,202 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 185 flow [2023-08-30 03:50:19,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-08-30 03:50:19,205 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -16 predicate places. [2023-08-30 03:50:19,205 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 185 flow [2023-08-30 03:50:19,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:19,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:19,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 03:50:19,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:19,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:19,208 INFO L85 PathProgramCache]: Analyzing trace with hash -44451740, now seen corresponding path program 1 times [2023-08-30 03:50:19,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:19,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999771781] [2023-08-30 03:50:19,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:19,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:19,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:19,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:19,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999771781] [2023-08-30 03:50:19,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999771781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:19,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:19,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:50:19,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026603106] [2023-08-30 03:50:19,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:19,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:19,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:19,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:19,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:19,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 384 [2023-08-30 03:50:19,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 185 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:19,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 384 [2023-08-30 03:50:19,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:19,782 INFO L130 PetriNetUnfolder]: 91/316 cut-off events. [2023-08-30 03:50:19,782 INFO L131 PetriNetUnfolder]: For 86/91 co-relation queries the response was YES. [2023-08-30 03:50:19,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 316 events. 91/316 cut-off events. For 86/91 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1939 event pairs, 36 based on Foata normal form. 6/247 useless extension candidates. Maximal degree in co-relation 853. Up to 158 conditions per place. [2023-08-30 03:50:19,784 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 51 selfloop transitions, 6 changer transitions 0/68 dead transitions. [2023-08-30 03:50:19,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 68 transitions, 419 flow [2023-08-30 03:50:19,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:19,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-30 03:50:19,787 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4418402777777778 [2023-08-30 03:50:19,787 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-30 03:50:19,787 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-30 03:50:19,788 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:19,788 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-30 03:50:19,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,791 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 185 flow. Second operand 3 states and 509 transitions. [2023-08-30 03:50:19,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 68 transitions, 419 flow [2023-08-30 03:50:19,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 68 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:19,795 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 218 flow [2023-08-30 03:50:19,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-30 03:50:19,796 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -14 predicate places. [2023-08-30 03:50:19,796 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 218 flow [2023-08-30 03:50:19,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:19,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:19,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:19,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 03:50:19,797 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:19,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 381630198, now seen corresponding path program 1 times [2023-08-30 03:50:19,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:19,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754960528] [2023-08-30 03:50:19,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:19,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:19,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:20,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754960528] [2023-08-30 03:50:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754960528] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648997206] [2023-08-30 03:50:20,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:20,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:20,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-30 03:50:20,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:20,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-30 03:50:20,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:20,549 INFO L130 PetriNetUnfolder]: 88/308 cut-off events. [2023-08-30 03:50:20,549 INFO L131 PetriNetUnfolder]: For 142/147 co-relation queries the response was YES. [2023-08-30 03:50:20,550 INFO L83 FinitePrefix]: Finished finitePrefix Result has 934 conditions, 308 events. 88/308 cut-off events. For 142/147 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1856 event pairs, 47 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 922. Up to 202 conditions per place. [2023-08-30 03:50:20,551 INFO L137 encePairwiseOnDemand]: 381/384 looper letters, 39 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2023-08-30 03:50:20,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 331 flow [2023-08-30 03:50:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:20,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:20,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-30 03:50:20,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4088541666666667 [2023-08-30 03:50:20,566 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-30 03:50:20,566 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-30 03:50:20,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:20,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-30 03:50:20,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,569 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,569 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 218 flow. Second operand 3 states and 471 transitions. [2023-08-30 03:50:20,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 331 flow [2023-08-30 03:50:20,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 54 transitions, 322 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 03:50:20,573 INFO L231 Difference]: Finished difference. Result has 55 places, 46 transitions, 226 flow [2023-08-30 03:50:20,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=55, PETRI_TRANSITIONS=46} [2023-08-30 03:50:20,574 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -12 predicate places. [2023-08-30 03:50:20,574 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 46 transitions, 226 flow [2023-08-30 03:50:20,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:20,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:20,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 03:50:20,575 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:20,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:20,576 INFO L85 PathProgramCache]: Analyzing trace with hash 381630197, now seen corresponding path program 1 times [2023-08-30 03:50:20,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:20,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130179465] [2023-08-30 03:50:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:20,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:20,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:20,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:20,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:20,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130179465] [2023-08-30 03:50:20,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130179465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:20,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:20,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 03:50:20,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23406023] [2023-08-30 03:50:20,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:20,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 03:50:20,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:20,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 03:50:20,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 03:50:20,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 384 [2023-08-30 03:50:20,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 46 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:20,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:20,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 384 [2023-08-30 03:50:20,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:21,161 INFO L130 PetriNetUnfolder]: 85/298 cut-off events. [2023-08-30 03:50:21,173 INFO L131 PetriNetUnfolder]: For 143/149 co-relation queries the response was YES. [2023-08-30 03:50:21,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 928 conditions, 298 events. 85/298 cut-off events. For 143/149 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1796 event pairs, 49 based on Foata normal form. 0/235 useless extension candidates. Maximal degree in co-relation 915. Up to 225 conditions per place. [2023-08-30 03:50:21,174 INFO L137 encePairwiseOnDemand]: 379/384 looper letters, 37 selfloop transitions, 6 changer transitions 0/54 dead transitions. [2023-08-30 03:50:21,174 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 54 transitions, 338 flow [2023-08-30 03:50:21,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 03:50:21,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 03:50:21,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-30 03:50:21,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105902777777778 [2023-08-30 03:50:21,176 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-30 03:50:21,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-30 03:50:21,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:21,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-30 03:50:21,177 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:21,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:21,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 384.0) internal successors, (1536), 4 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:21,179 INFO L175 Difference]: Start difference. First operand has 55 places, 46 transitions, 226 flow. Second operand 3 states and 473 transitions. [2023-08-30 03:50:21,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 54 transitions, 338 flow [2023-08-30 03:50:21,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 54 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:50:21,181 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 238 flow [2023-08-30 03:50:21,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-08-30 03:50:21,181 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -11 predicate places. [2023-08-30 03:50:21,182 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 238 flow [2023-08-30 03:50:21,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:21,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:21,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:21,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 03:50:21,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:21,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:21,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1378222278, now seen corresponding path program 1 times [2023-08-30 03:50:21,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:21,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060699942] [2023-08-30 03:50:21,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:21,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:21,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:21,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:21,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:21,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060699942] [2023-08-30 03:50:21,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060699942] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:21,871 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:21,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 03:50:21,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288819999] [2023-08-30 03:50:21,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:21,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 03:50:21,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:21,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 03:50:21,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 03:50:22,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 384 [2023-08-30 03:50:22,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:22,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:22,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 384 [2023-08-30 03:50:22,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:22,428 INFO L130 PetriNetUnfolder]: 73/266 cut-off events. [2023-08-30 03:50:22,428 INFO L131 PetriNetUnfolder]: For 133/138 co-relation queries the response was YES. [2023-08-30 03:50:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870 conditions, 266 events. 73/266 cut-off events. For 133/138 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1524 event pairs, 23 based on Foata normal form. 18/235 useless extension candidates. Maximal degree in co-relation 856. Up to 103 conditions per place. [2023-08-30 03:50:22,429 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 47 selfloop transitions, 7 changer transitions 1/64 dead transitions. [2023-08-30 03:50:22,429 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 412 flow [2023-08-30 03:50:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:50:22,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:50:22,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 758 transitions. [2023-08-30 03:50:22,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39479166666666665 [2023-08-30 03:50:22,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 758 transitions. [2023-08-30 03:50:22,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 758 transitions. [2023-08-30 03:50:22,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:22,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 758 transitions. [2023-08-30 03:50:22,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 151.6) internal successors, (758), 5 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:22,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:22,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:22,450 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 238 flow. Second operand 5 states and 758 transitions. [2023-08-30 03:50:22,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 412 flow [2023-08-30 03:50:22,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 64 transitions, 400 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 03:50:22,452 INFO L231 Difference]: Finished difference. Result has 58 places, 44 transitions, 238 flow [2023-08-30 03:50:22,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=238, PETRI_PLACES=58, PETRI_TRANSITIONS=44} [2023-08-30 03:50:22,453 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -9 predicate places. [2023-08-30 03:50:22,453 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 44 transitions, 238 flow [2023-08-30 03:50:22,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.8) internal successors, (719), 5 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:22,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:22,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:22,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 03:50:22,454 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:22,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:22,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220133, now seen corresponding path program 1 times [2023-08-30 03:50:22,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:22,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842289207] [2023-08-30 03:50:22,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:22,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:22,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:22,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842289207] [2023-08-30 03:50:22,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842289207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:22,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:22,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:50:22,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389156666] [2023-08-30 03:50:22,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:22,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:50:22,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:22,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:50:22,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:50:23,062 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 384 [2023-08-30 03:50:23,063 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 44 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:23,063 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:23,063 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 384 [2023-08-30 03:50:23,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:23,391 INFO L130 PetriNetUnfolder]: 70/288 cut-off events. [2023-08-30 03:50:23,391 INFO L131 PetriNetUnfolder]: For 175/175 co-relation queries the response was YES. [2023-08-30 03:50:23,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 288 events. 70/288 cut-off events. For 175/175 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1720 event pairs, 26 based on Foata normal form. 3/251 useless extension candidates. Maximal degree in co-relation 949. Up to 98 conditions per place. [2023-08-30 03:50:23,392 INFO L137 encePairwiseOnDemand]: 376/384 looper letters, 40 selfloop transitions, 16 changer transitions 1/63 dead transitions. [2023-08-30 03:50:23,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 423 flow [2023-08-30 03:50:23,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 03:50:23,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 03:50:23,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 878 transitions. [2023-08-30 03:50:23,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3810763888888889 [2023-08-30 03:50:23,396 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 878 transitions. [2023-08-30 03:50:23,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 878 transitions. [2023-08-30 03:50:23,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:23,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 878 transitions. [2023-08-30 03:50:23,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:23,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:23,401 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 384.0) internal successors, (2688), 7 states have internal predecessors, (2688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:23,401 INFO L175 Difference]: Start difference. First operand has 58 places, 44 transitions, 238 flow. Second operand 6 states and 878 transitions. [2023-08-30 03:50:23,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 423 flow [2023-08-30 03:50:23,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 63 transitions, 407 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 03:50:23,403 INFO L231 Difference]: Finished difference. Result has 60 places, 46 transitions, 278 flow [2023-08-30 03:50:23,404 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=278, PETRI_PLACES=60, PETRI_TRANSITIONS=46} [2023-08-30 03:50:23,404 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -7 predicate places. [2023-08-30 03:50:23,404 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 46 transitions, 278 flow [2023-08-30 03:50:23,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 139.5) internal successors, (837), 6 states have internal predecessors, (837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:23,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:23,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 03:50:23,405 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:23,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:23,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1378220132, now seen corresponding path program 1 times [2023-08-30 03:50:23,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:23,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695210027] [2023-08-30 03:50:23,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:23,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:23,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:23,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:23,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695210027] [2023-08-30 03:50:23,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695210027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:23,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:23,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:50:23,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950871462] [2023-08-30 03:50:23,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:23,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:50:23,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:23,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:50:23,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:50:24,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-08-30 03:50:24,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 46 transitions, 278 flow. Second operand has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:24,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:24,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-08-30 03:50:24,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:24,610 INFO L130 PetriNetUnfolder]: 65/280 cut-off events. [2023-08-30 03:50:24,610 INFO L131 PetriNetUnfolder]: For 212/212 co-relation queries the response was YES. [2023-08-30 03:50:24,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 996 conditions, 280 events. 65/280 cut-off events. For 212/212 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1674 event pairs, 32 based on Foata normal form. 3/247 useless extension candidates. Maximal degree in co-relation 980. Up to 123 conditions per place. [2023-08-30 03:50:24,612 INFO L137 encePairwiseOnDemand]: 378/384 looper letters, 38 selfloop transitions, 9 changer transitions 0/56 dead transitions. [2023-08-30 03:50:24,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 404 flow [2023-08-30 03:50:24,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 03:50:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 03:50:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 722 transitions. [2023-08-30 03:50:24,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37604166666666666 [2023-08-30 03:50:24,615 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 722 transitions. [2023-08-30 03:50:24,615 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 722 transitions. [2023-08-30 03:50:24,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:24,616 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 722 transitions. [2023-08-30 03:50:24,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.4) internal successors, (722), 5 states have internal predecessors, (722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:24,619 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:24,619 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 384.0) internal successors, (2304), 6 states have internal predecessors, (2304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:24,619 INFO L175 Difference]: Start difference. First operand has 60 places, 46 transitions, 278 flow. Second operand 5 states and 722 transitions. [2023-08-30 03:50:24,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 404 flow [2023-08-30 03:50:24,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 56 transitions, 388 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 03:50:24,622 INFO L231 Difference]: Finished difference. Result has 63 places, 46 transitions, 290 flow [2023-08-30 03:50:24,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=290, PETRI_PLACES=63, PETRI_TRANSITIONS=46} [2023-08-30 03:50:24,622 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, -4 predicate places. [2023-08-30 03:50:24,622 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 46 transitions, 290 flow [2023-08-30 03:50:24,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.5) internal successors, (831), 6 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:24,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:24,623 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:24,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 03:50:24,623 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:24,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:24,623 INFO L85 PathProgramCache]: Analyzing trace with hash 224780215, now seen corresponding path program 1 times [2023-08-30 03:50:24,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:24,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724576633] [2023-08-30 03:50:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:24,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 03:50:25,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 03:50:25,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 03:50:25,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724576633] [2023-08-30 03:50:25,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724576633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 03:50:25,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 03:50:25,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 03:50:25,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652033473] [2023-08-30 03:50:25,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 03:50:25,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 03:50:25,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 03:50:25,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 03:50:25,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 03:50:25,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 384 [2023-08-30 03:50:25,325 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 46 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:25,325 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 03:50:25,325 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 384 [2023-08-30 03:50:25,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 03:50:25,941 INFO L130 PetriNetUnfolder]: 67/263 cut-off events. [2023-08-30 03:50:25,941 INFO L131 PetriNetUnfolder]: For 341/341 co-relation queries the response was YES. [2023-08-30 03:50:25,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1034 conditions, 263 events. 67/263 cut-off events. For 341/341 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1467 event pairs, 9 based on Foata normal form. 20/261 useless extension candidates. Maximal degree in co-relation 1017. Up to 148 conditions per place. [2023-08-30 03:50:25,942 INFO L137 encePairwiseOnDemand]: 373/384 looper letters, 55 selfloop transitions, 16 changer transitions 0/76 dead transitions. [2023-08-30 03:50:25,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 76 transitions, 549 flow [2023-08-30 03:50:25,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 03:50:25,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 03:50:25,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1027 transitions. [2023-08-30 03:50:25,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3820684523809524 [2023-08-30 03:50:25,945 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1027 transitions. [2023-08-30 03:50:25,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1027 transitions. [2023-08-30 03:50:25,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 03:50:25,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1027 transitions. [2023-08-30 03:50:25,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 146.71428571428572) internal successors, (1027), 7 states have internal predecessors, (1027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:25,949 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:25,950 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 384.0) internal successors, (3072), 8 states have internal predecessors, (3072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:25,950 INFO L175 Difference]: Start difference. First operand has 63 places, 46 transitions, 290 flow. Second operand 7 states and 1027 transitions. [2023-08-30 03:50:25,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 76 transitions, 549 flow [2023-08-30 03:50:25,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 76 transitions, 528 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 03:50:25,953 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 378 flow [2023-08-30 03:50:25,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=384, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=378, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-30 03:50:25,954 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-30 03:50:25,954 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 378 flow [2023-08-30 03:50:25,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.66666666666666) internal successors, (832), 6 states have internal predecessors, (832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 03:50:25,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 03:50:25,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:25,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 03:50:25,955 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 53 more)] === [2023-08-30 03:50:25,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 03:50:25,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1674345171, now seen corresponding path program 1 times [2023-08-30 03:50:25,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 03:50:25,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847953694] [2023-08-30 03:50:25,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 03:50:25,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 03:50:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 03:50:25,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-30 03:50:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-30 03:50:26,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-30 03:50:26,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-30 03:50:26,045 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK (55 of 56 remaining) [2023-08-30 03:50:26,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 56 remaining) [2023-08-30 03:50:26,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 56 remaining) [2023-08-30 03:50:26,046 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 56 remaining) [2023-08-30 03:50:26,047 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 56 remaining) [2023-08-30 03:50:26,048 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 56 remaining) [2023-08-30 03:50:26,049 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 56 remaining) [2023-08-30 03:50:26,050 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 56 remaining) [2023-08-30 03:50:26,051 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 56 remaining) [2023-08-30 03:50:26,052 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 56 remaining) [2023-08-30 03:50:26,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 03:50:26,053 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 03:50:26,057 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 03:50:26,057 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 03:50:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 03:50:26 BasicIcfg [2023-08-30 03:50:26,089 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 03:50:26,090 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 03:50:26,090 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 03:50:26,090 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 03:50:26,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:44:38" (3/4) ... [2023-08-30 03:50:26,092 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-08-30 03:50:26,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 03:50:26,092 INFO L158 Benchmark]: Toolchain (without parser) took 348439.66ms. Allocated memory was 67.1MB in the beginning and 348.1MB in the end (delta: 281.0MB). Free memory was 42.1MB in the beginning and 288.2MB in the end (delta: -246.2MB). Peak memory consumption was 36.8MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,093 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 31.7MB in the beginning and 31.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:50:26,093 INFO L158 Benchmark]: CACSL2BoogieTranslator took 561.28ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 32.7MB in the end (delta: 9.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,093 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.20ms. Allocated memory is still 67.1MB. Free memory was 32.7MB in the beginning and 29.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,093 INFO L158 Benchmark]: Boogie Preprocessor took 27.00ms. Allocated memory is still 67.1MB. Free memory was 29.9MB in the beginning and 28.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,093 INFO L158 Benchmark]: RCFGBuilder took 646.73ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 54.6MB in the end (delta: -26.5MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,094 INFO L158 Benchmark]: TraceAbstraction took 347138.19ms. Allocated memory was 81.8MB in the beginning and 348.1MB in the end (delta: 266.3MB). Free memory was 53.8MB in the beginning and 288.2MB in the end (delta: -234.5MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. [2023-08-30 03:50:26,094 INFO L158 Benchmark]: Witness Printer took 2.30ms. Allocated memory is still 348.1MB. Free memory is still 288.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 03:50:26,095 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 54.5MB. Free memory was 31.7MB in the beginning and 31.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 561.28ms. Allocated memory is still 67.1MB. Free memory was 41.9MB in the beginning and 32.7MB in the end (delta: 9.2MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.20ms. Allocated memory is still 67.1MB. Free memory was 32.7MB in the beginning and 29.9MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.00ms. Allocated memory is still 67.1MB. Free memory was 29.9MB in the beginning and 28.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 646.73ms. Allocated memory was 67.1MB in the beginning and 81.8MB in the end (delta: 14.7MB). Free memory was 28.0MB in the beginning and 54.6MB in the end (delta: -26.5MB). Peak memory consumption was 8.9MB. Max. memory is 16.1GB. * TraceAbstraction took 347138.19ms. Allocated memory was 81.8MB in the beginning and 348.1MB in the end (delta: 266.3MB). Free memory was 53.8MB in the beginning and 288.2MB in the end (delta: -234.5MB). Peak memory consumption was 31.9MB. Max. memory is 16.1GB. * Witness Printer took 2.30ms. Allocated memory is still 348.1MB. Free memory is still 288.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 333.6s, 166 PlacesBefore, 67 PlacesAfterwards, 162 TransitionsBefore, 63 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 9 FixpointIterations, 157 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 221 TotalNumberOfCompositions, 13335 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5821, independent: 5252, independent conditional: 0, independent unconditional: 5252, dependent: 569, dependent conditional: 0, dependent unconditional: 569, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1544, independent: 1468, independent conditional: 0, independent unconditional: 1468, dependent: 76, dependent conditional: 0, dependent unconditional: 76, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5821, independent: 3784, independent conditional: 0, independent unconditional: 3784, dependent: 493, dependent conditional: 0, dependent unconditional: 493, unknown: 1544, unknown conditional: 0, unknown unconditional: 1544] , Statistics on independence cache: Total cache size (in pairs): 255, Positive cache size: 218, Positive conditional cache size: 0, Positive unconditional cache size: 218, Negative cache size: 37, Negative conditional cache size: 0, Negative unconditional cache size: 37, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - UnprovableResult [Line: 1242]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1242. Possible FailurePath: [L1223-L1226] 0 struct s { int datum; struct s *next; } *A, *B; [L1231] 0 pthread_mutex_t A_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1232] 0 pthread_mutex_t B_mutex = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1243] 0 pthread_t t1; [L1244] 0 struct s *p = malloc(sizeof(struct s)); [L1245] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1245] RET 0 init(p,9) [L1246] 0 A = malloc(sizeof(struct s)) [L1247] CALL 0 init(A,3) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1247] RET 0 init(A,3) [L1248] 0 A->next = p [L1249] 0 B = malloc(sizeof(struct s)) [L1250] CALL 0 init(B,5) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1250] RET 0 init(B,5) [L1251] 0 p = malloc(sizeof(struct s)) [L1252] CALL 0 init(p,9) [L1228] 0 p -> datum = x [L1229] 0 p -> next = ((void *)0) [L1252] RET 0 init(p,9) [L1253] 0 B->next = p [L1254] FCALL, FORK 0 pthread_create(&t1, ((void *)0), t_fun, ((void *)0)) VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, pthread_create(&t1, ((void *)0), t_fun, ((void *)0))=-1, t1={6:0}] [L1256] EXPR 0 A->next VAL [A->next={-3:0}, A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1256] 0 p = A->next [L1257] 0 p->datum [L1260] EXPR 0 B->next [L1260] 0 p = B->next VAL [A={-2:0}, A_mutex={1:0}, B->next={-4:0}, B={-5:0}, B_mutex={2:0}, arg={0:0}, p={-4:0}, t1={6:0}] [L1261] 0 p->datum [L1263] 0 return 0; VAL [A={-2:0}, A_mutex={1:0}, B={-5:0}, B_mutex={2:0}, \result=0, arg={0:0}, p={-4:0}, t1={6:0}] [L1263] 0 return 0; - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1254]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 201 locations, 56 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 347.0s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 333.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2617 SdHoareTripleChecker+Valid, 6.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1311 mSDsluCounter, 311 SdHoareTripleChecker+Invalid, 6.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 161 mSDsCounter, 145 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3267 IncrementalHoareTripleChecker+Invalid, 3412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 145 mSolverCounterUnsat, 150 mSDtfsCounter, 3267 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=378occurred in iteration=15, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 105 NumberOfCodeBlocks, 105 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 1281 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-08-30 03:50:26,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/goblint-regression/09-regions_04-list2_nr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 03:50:27,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 03:50:27,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 03:50:27,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 03:50:27,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 03:50:27,980 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 03:50:27,982 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 03:50:27,984 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 03:50:27,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 03:50:27,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 03:50:27,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 03:50:27,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 03:50:27,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 03:50:27,993 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 03:50:27,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 03:50:27,996 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 03:50:27,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 03:50:27,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 03:50:27,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 03:50:28,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 03:50:28,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 03:50:28,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 03:50:28,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 03:50:28,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 03:50:28,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 03:50:28,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 03:50:28,011 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 03:50:28,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 03:50:28,013 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 03:50:28,014 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 03:50:28,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 03:50:28,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 03:50:28,020 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 03:50:28,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 03:50:28,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 03:50:28,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 03:50:28,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 03:50:28,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 03:50:28,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 03:50:28,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 03:50:28,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 03:50:28,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-08-30 03:50:28,054 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 03:50:28,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 03:50:28,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 03:50:28,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 03:50:28,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 03:50:28,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 03:50:28,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 03:50:28,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 03:50:28,057 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 03:50:28,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 03:50:28,058 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 03:50:28,058 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 03:50:28,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 03:50:28,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 03:50:28,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 03:50:28,060 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2023-08-30 03:50:28,060 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-08-30 03:50:28,060 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 03:50:28,060 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 03:50:28,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 03:50:28,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 03:50:28,061 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 03:50:28,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:50:28,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 03:50:28,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 03:50:28,061 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2023-08-30 03:50:28,062 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 03:50:28,063 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22e95fa30ebde8538537e9926c639bef97cab57433fef0bd6d73df06023fa7d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 03:50:28,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 03:50:28,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 03:50:28,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 03:50:28,350 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 03:50:28,352 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 03:50:28,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-30 03:50:29,422 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 03:50:29,671 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 03:50:29,671 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/09-regions_04-list2_nr.i [2023-08-30 03:50:29,683 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6daa5081/214793df2f794d819c283206f18d3b26/FLAGe22d59569 [2023-08-30 03:50:29,697 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6daa5081/214793df2f794d819c283206f18d3b26 [2023-08-30 03:50:29,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 03:50:29,700 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 03:50:29,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 03:50:29,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 03:50:29,703 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 03:50:29,704 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:50:29" (1/1) ... [2023-08-30 03:50:29,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256f9d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:29, skipping insertion in model container [2023-08-30 03:50:29,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 03:50:29" (1/1) ... [2023-08-30 03:50:29,709 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 03:50:29,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 03:50:30,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:50:30,157 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 03:50:30,200 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 03:50:30,282 INFO L208 MainTranslator]: Completed translation [2023-08-30 03:50:30,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30 WrapperNode [2023-08-30 03:50:30,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 03:50:30,284 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 03:50:30,284 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 03:50:30,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 03:50:30,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,345 INFO L138 Inliner]: procedures = 369, calls = 45, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 87 [2023-08-30 03:50:30,347 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 03:50:30,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 03:50:30,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 03:50:30,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 03:50:30,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,381 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 03:50:30,385 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 03:50:30,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 03:50:30,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 03:50:30,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (1/1) ... [2023-08-30 03:50:30,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 03:50:30,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 03:50:30,408 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 03:50:30,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 03:50:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2023-08-30 03:50:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 03:50:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-30 03:50:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 03:50:30,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-08-30 03:50:30,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2023-08-30 03:50:30,442 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-30 03:50:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 03:50:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 03:50:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-30 03:50:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-30 03:50:30,443 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-30 03:50:30,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 03:50:30,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 03:50:30,444 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 03:50:30,553 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 03:50:30,555 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 03:50:30,943 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 03:50:30,949 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 03:50:30,949 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 03:50:30,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:50:30 BoogieIcfgContainer [2023-08-30 03:50:30,951 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 03:50:30,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 03:50:30,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 03:50:30,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 03:50:30,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 03:50:29" (1/3) ... [2023-08-30 03:50:30,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402acce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:50:30, skipping insertion in model container [2023-08-30 03:50:30,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 03:50:30" (2/3) ... [2023-08-30 03:50:30,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@402acce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 03:50:30, skipping insertion in model container [2023-08-30 03:50:30,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 03:50:30" (3/3) ... [2023-08-30 03:50:30,965 INFO L112 eAbstractionObserver]: Analyzing ICFG 09-regions_04-list2_nr.i [2023-08-30 03:50:30,983 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 03:50:30,983 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 43 error locations. [2023-08-30 03:50:30,983 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 03:50:31,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 03:50:31,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 164 transitions, 333 flow [2023-08-30 03:50:31,174 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-08-30 03:50:31,175 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:31,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 221 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 03:50:31,179 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 164 transitions, 333 flow [2023-08-30 03:50:31,186 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 163 transitions, 329 flow [2023-08-30 03:50:31,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 03:50:31,198 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 163 transitions, 329 flow [2023-08-30 03:50:31,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 163 transitions, 329 flow [2023-08-30 03:50:31,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 163 transitions, 329 flow [2023-08-30 03:50:31,231 INFO L130 PetriNetUnfolder]: 0/163 cut-off events. [2023-08-30 03:50:31,232 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 03:50:31,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 163 events. 0/163 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 225 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-08-30 03:50:31,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-30 03:51:27,288 WARN L222 SmtUtils]: Spent 12.97s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:51:45,130 WARN L222 SmtUtils]: Spent 12.98s on a formula simplification. DAG size of input: 117 DAG size of output: 110 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:52:55,320 WARN L222 SmtUtils]: Spent 1.09m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:53:23,600 WARN L222 SmtUtils]: Spent 28.28s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:54:30,980 WARN L222 SmtUtils]: Spent 1.12m on a formula simplification. DAG size of input: 148 DAG size of output: 140 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:54:56,283 WARN L222 SmtUtils]: Spent 25.30s on a formula simplification that was a NOOP. DAG size: 132 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:55:11,127 WARN L222 SmtUtils]: Spent 5.25s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:55:37,982 WARN L222 SmtUtils]: Spent 17.51s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:55:51,423 WARN L222 SmtUtils]: Spent 13.44s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:56:07,451 WARN L222 SmtUtils]: Spent 16.03s on a formula simplification that was a NOOP. DAG size: 123 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:56:23,383 WARN L222 SmtUtils]: Spent 15.93s on a formula simplification that was a NOOP. DAG size: 119 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:56:28,825 WARN L222 SmtUtils]: Spent 5.44s on a formula simplification that was a NOOP. DAG size: 108 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:56:58,457 WARN L222 SmtUtils]: Spent 15.75s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:57:04,109 WARN L222 SmtUtils]: Spent 5.65s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:57:20,067 WARN L222 SmtUtils]: Spent 15.95s on a formula simplification. DAG size of input: 122 DAG size of output: 114 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-30 03:57:25,994 WARN L222 SmtUtils]: Spent 5.93s on a formula simplification that was a NOOP. DAG size: 104 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15