./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:36:54,019 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:36:54,022 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:36:54,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:36:54,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:36:54,060 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:36:54,063 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:36:54,065 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:36:54,067 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:36:54,071 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:36:54,072 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:36:54,074 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:36:54,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:36:54,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:36:54,078 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:36:54,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:36:54,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:36:54,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:36:54,086 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:36:54,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:36:54,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:36:54,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:36:54,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:36:54,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:36:54,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:36:54,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:36:54,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:36:54,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:36:54,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:36:54,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:36:54,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:36:54,110 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:36:54,111 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:36:54,112 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:36:54,113 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:36:54,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:36:54,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:36:54,115 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:36:54,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:36:54,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:36:54,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:36:54,123 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:36:54,158 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:36:54,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:36:54,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:36:54,160 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:36:54,161 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:36:54,161 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:36:54,161 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:36:54,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:36:54,162 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:36:54,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:36:54,163 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:36:54,163 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:36:54,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:36:54,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:36:54,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:36:54,164 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:36:54,164 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:36:54,164 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:36:54,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:36:54,165 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:36:54,165 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:36:54,165 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:36:54,165 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:36:54,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:36:54,166 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:36:54,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:36:54,166 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:36:54,166 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:36:54,167 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:36:54,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:36:54,167 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:36:54,167 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:36:54,168 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:36:54,168 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:36:54,168 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3c2ccb27a3ce50ce458a10a4aa8fbbd4d9c9d88060b8c7df98385ed8946afbfa Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:36:54,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:36:54,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:36:54,503 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:36:54,504 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:36:54,504 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:36:54,506 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-09-01 01:36:55,809 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:36:55,990 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:36:55,991 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-09-01 01:36:55,996 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b50d0114/677694ce7c1b4fa7b36c752d15de5064/FLAG29bafe0ed [2023-09-01 01:36:56,021 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1b50d0114/677694ce7c1b4fa7b36c752d15de5064 [2023-09-01 01:36:56,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:36:56,025 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:36:56,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:36:56,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:36:56,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:36:56,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b5c1be3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56, skipping insertion in model container [2023-09-01 01:36:56,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:36:56,059 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:36:56,220 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3017,3030] [2023-09-01 01:36:56,237 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:36:56,246 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:36:56,270 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c[3017,3030] [2023-09-01 01:36:56,281 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:36:56,294 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:36:56,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56 WrapperNode [2023-09-01 01:36:56,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:36:56,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:36:56,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:36:56,299 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:36:56,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,365 INFO L138 Inliner]: procedures = 23, calls = 34, calls flagged for inlining = 12, calls inlined = 22, statements flattened = 215 [2023-09-01 01:36:56,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:36:56,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:36:56,367 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:36:56,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:36:56,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,398 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,410 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,413 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,424 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:36:56,425 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:36:56,427 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:36:56,428 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:36:56,428 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (1/1) ... [2023-09-01 01:36:56,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:36:56,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:36:56,457 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) [2023-09-01 01:36:56,480 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 [2023-09-01 01:36:56,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:36:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 01:36:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 01:36:56,496 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 01:36:56,496 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 01:36:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 01:36:56,497 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 01:36:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 01:36:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:36:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 01:36:56,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:36:56,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:36:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 01:36:56,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:36:56,499 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:36:56,626 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:36:56,628 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:36:56,981 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:36:56,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:36:56,996 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 01:36:56,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:56 BoogieIcfgContainer [2023-09-01 01:36:56,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:36:57,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:36:57,014 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:36:57,017 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:36:57,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:36:56" (1/3) ... [2023-09-01 01:36:57,018 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c084b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:36:57, skipping insertion in model container [2023-09-01 01:36:57,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:56" (2/3) ... [2023-09-01 01:36:57,019 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c084b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:36:57, skipping insertion in model container [2023-09-01 01:36:57,019 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:56" (3/3) ... [2023-09-01 01:36:57,020 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-09-01 01:36:57,050 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:36:57,051 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 01:36:57,051 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:36:57,240 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 01:36:57,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 271 transitions, 566 flow [2023-09-01 01:36:57,391 INFO L130 PetriNetUnfolder]: 14/268 cut-off events. [2023-09-01 01:36:57,391 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:36:57,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281 conditions, 268 events. 14/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 386 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-09-01 01:36:57,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 271 transitions, 566 flow [2023-09-01 01:36:57,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 260 places, 264 transitions, 546 flow [2023-09-01 01:36:57,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:36:57,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 260 places, 264 transitions, 546 flow [2023-09-01 01:36:57,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 260 places, 264 transitions, 546 flow [2023-09-01 01:36:57,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 260 places, 264 transitions, 546 flow [2023-09-01 01:36:57,504 INFO L130 PetriNetUnfolder]: 14/264 cut-off events. [2023-09-01 01:36:57,505 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:36:57,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 264 events. 14/264 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 384 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2023-09-01 01:36:57,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 18330 [2023-09-01 01:37:06,236 INFO L134 LiptonReduction]: Checked pairs total: 16655 [2023-09-01 01:37:06,237 INFO L136 LiptonReduction]: Total number of compositions: 321 [2023-09-01 01:37:06,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:37:06,262 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;@274cbfdb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:37:06,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 01:37:06,264 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 01:37:06,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:06,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:06,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:37:06,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:06,273 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:06,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1095, now seen corresponding path program 1 times [2023-09-01 01:37:06,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:06,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575986034] [2023-09-01 01:37:06,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:06,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:06,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:06,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:06,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:06,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575986034] [2023-09-01 01:37:06,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575986034] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:06,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:06,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:37:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888287394] [2023-09-01 01:37:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:06,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:37:06,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:06,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:37:06,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:37:06,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 592 [2023-09-01 01:37:06,493 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,493 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:06,493 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 592 [2023-09-01 01:37:06,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:06,586 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-09-01 01:37:06,587 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 01:37:06,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 467 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-09-01 01:37:06,590 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-09-01 01:37:06,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-09-01 01:37:06,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:37:06,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:37:06,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 529 transitions. [2023-09-01 01:37:06,611 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4467905405405405 [2023-09-01 01:37:06,612 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 529 transitions. [2023-09-01 01:37:06,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 529 transitions. [2023-09-01 01:37:06,616 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:06,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 529 transitions. [2023-09-01 01:37:06,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 264.5) internal successors, (529), 2 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,631 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 592.0) internal successors, (1776), 3 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,633 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 529 transitions. [2023-09-01 01:37:06,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-09-01 01:37:06,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 01:37:06,639 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-09-01 01:37:06,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 01:37:06,648 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:37:06,648 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-09-01 01:37:06,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:06,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:37:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 01:37:06,650 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:06,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:06,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1078175, now seen corresponding path program 1 times [2023-09-01 01:37:06,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:06,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966100911] [2023-09-01 01:37:06,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:06,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:06,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:06,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966100911] [2023-09-01 01:37:06,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966100911] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:06,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:06,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:06,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709872772] [2023-09-01 01:37:06,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:06,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:06,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:06,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:06,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:06,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 592 [2023-09-01 01:37:06,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:06,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:06,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 592 [2023-09-01 01:37:06,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:07,054 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-09-01 01:37:07,055 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:07,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 425 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-09-01 01:37:07,057 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 01:37:07,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-09-01 01:37:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:07,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:07,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 746 transitions. [2023-09-01 01:37:07,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42004504504504503 [2023-09-01 01:37:07,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 746 transitions. [2023-09-01 01:37:07,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 746 transitions. [2023-09-01 01:37:07,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:07,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 746 transitions. [2023-09-01 01:37:07,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.66666666666666) internal successors, (746), 3 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,068 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 746 transitions. [2023-09-01 01:37:07,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-09-01 01:37:07,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:37:07,070 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-09-01 01:37:07,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 01:37:07,071 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:37:07,071 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-09-01 01:37:07,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.0) internal successors, (723), 3 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:07,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:37:07,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 01:37:07,073 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:07,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:07,073 INFO L85 PathProgramCache]: Analyzing trace with hash 1078174, now seen corresponding path program 1 times [2023-09-01 01:37:07,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:07,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800282594] [2023-09-01 01:37:07,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:07,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:07,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800282594] [2023-09-01 01:37:07,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800282594] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:07,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:07,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:07,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541524964] [2023-09-01 01:37:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:07,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:07,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:07,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:07,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:07,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 592 [2023-09-01 01:37:07,269 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:07,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 592 [2023-09-01 01:37:07,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:07,326 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-09-01 01:37:07,328 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:07,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 385 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-09-01 01:37:07,329 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 01:37:07,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-09-01 01:37:07,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:07,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 759 transitions. [2023-09-01 01:37:07,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42736486486486486 [2023-09-01 01:37:07,331 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 759 transitions. [2023-09-01 01:37:07,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 759 transitions. [2023-09-01 01:37:07,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:07,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 759 transitions. [2023-09-01 01:37:07,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.0) internal successors, (759), 3 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,338 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,338 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 759 transitions. [2023-09-01 01:37:07,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-09-01 01:37:07,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:07,339 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-09-01 01:37:07,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 01:37:07,340 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-09-01 01:37:07,343 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-09-01 01:37:07,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:07,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:37:07,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 01:37:07,345 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:07,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:07,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1036151252, now seen corresponding path program 1 times [2023-09-01 01:37:07,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:07,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122728054] [2023-09-01 01:37:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:07,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:07,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:07,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:07,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:07,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122728054] [2023-09-01 01:37:07,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122728054] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:07,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:07,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:07,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896808052] [2023-09-01 01:37:07,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:07,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:07,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:07,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:07,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:07,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 592 [2023-09-01 01:37:07,503 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,503 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:07,503 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 592 [2023-09-01 01:37:07,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:07,560 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-09-01 01:37:07,561 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:07,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 340 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-09-01 01:37:07,562 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-09-01 01:37:07,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-09-01 01:37:07,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:07,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:07,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 745 transitions. [2023-09-01 01:37:07,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.419481981981982 [2023-09-01 01:37:07,567 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 745 transitions. [2023-09-01 01:37:07,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 745 transitions. [2023-09-01 01:37:07,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:07,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 745 transitions. [2023-09-01 01:37:07,569 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,573 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,573 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 745 transitions. [2023-09-01 01:37:07,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-09-01 01:37:07,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:07,575 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-09-01 01:37:07,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-09-01 01:37:07,575 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-09-01 01:37:07,576 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-09-01 01:37:07,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.66666666666666) internal successors, (728), 3 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,576 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:07,576 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:37:07,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 01:37:07,577 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:07,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:07,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1036151251, now seen corresponding path program 1 times [2023-09-01 01:37:07,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:07,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731522499] [2023-09-01 01:37:07,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:07,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:07,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:07,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:07,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731522499] [2023-09-01 01:37:07,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731522499] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:07,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:07,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:07,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963815905] [2023-09-01 01:37:07,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:07,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:07,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:07,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:07,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:07,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 592 [2023-09-01 01:37:07,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:07,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 592 [2023-09-01 01:37:07,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:07,692 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-09-01 01:37:07,692 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:07,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 297 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-09-01 01:37:07,693 INFO L137 encePairwiseOnDemand]: 589/592 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-09-01 01:37:07,693 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-09-01 01:37:07,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:07,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:07,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-09-01 01:37:07,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-09-01 01:37:07,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-09-01 01:37:07,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-09-01 01:37:07,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:07,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-09-01 01:37:07,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,722 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,722 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 740 transitions. [2023-09-01 01:37:07,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-09-01 01:37:07,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:07,723 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-09-01 01:37:07,723 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-09-01 01:37:07,724 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:07,724 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-09-01 01:37:07,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 241.66666666666666) internal successors, (725), 3 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:07,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 01:37:07,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:07,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash -691034558, now seen corresponding path program 1 times [2023-09-01 01:37:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:07,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005172359] [2023-09-01 01:37:07,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:07,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:07,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:07,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005172359] [2023-09-01 01:37:07,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005172359] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:07,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:07,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:37:07,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440961759] [2023-09-01 01:37:07,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:07,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:07,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:07,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:07,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 232 out of 592 [2023-09-01 01:37:07,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:07,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 232 of 592 [2023-09-01 01:37:07,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:07,937 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-09-01 01:37:07,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:07,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 220 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-09-01 01:37:07,938 INFO L137 encePairwiseOnDemand]: 590/592 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 01:37:07,938 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-09-01 01:37:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 714 transitions. [2023-09-01 01:37:07,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40202702702702703 [2023-09-01 01:37:07,941 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 714 transitions. [2023-09-01 01:37:07,941 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 714 transitions. [2023-09-01 01:37:07,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:07,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 714 transitions. [2023-09-01 01:37:07,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.0) internal successors, (714), 3 states have internal predecessors, (714), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,947 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,947 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 714 transitions. [2023-09-01 01:37:07,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-09-01 01:37:07,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:07,948 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-09-01 01:37:07,949 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-09-01 01:37:07,949 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:07,949 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-09-01 01:37:07,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 233.4) internal successors, (1167), 5 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:07,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:07,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:07,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 01:37:07,951 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:07,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:07,951 INFO L85 PathProgramCache]: Analyzing trace with hash -691034557, now seen corresponding path program 1 times [2023-09-01 01:37:07,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:07,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495999181] [2023-09-01 01:37:07,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:07,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:07,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:07,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:07,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:07,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495999181] [2023-09-01 01:37:07,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495999181] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:07,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:07,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:37:07,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943619295] [2023-09-01 01:37:07,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:07,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:37:07,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:07,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:37:07,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:37:08,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 241 out of 592 [2023-09-01 01:37:08,021 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,021 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:08,021 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 241 of 592 [2023-09-01 01:37:08,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:08,058 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-09-01 01:37:08,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:37:08,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-09-01 01:37:08,059 INFO L137 encePairwiseOnDemand]: 590/592 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-09-01 01:37:08,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-09-01 01:37:08,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:37:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:37:08,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 740 transitions. [2023-09-01 01:37:08,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-09-01 01:37:08,062 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 740 transitions. [2023-09-01 01:37:08,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 740 transitions. [2023-09-01 01:37:08,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:08,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 740 transitions. [2023-09-01 01:37:08,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.66666666666666) internal successors, (740), 3 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,067 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 592.0) internal successors, (2368), 4 states have internal predecessors, (2368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,067 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 740 transitions. [2023-09-01 01:37:08,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-09-01 01:37:08,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:08,068 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-09-01 01:37:08,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-09-01 01:37:08,069 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:37:08,069 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-09-01 01:37:08,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 243.33333333333334) internal successors, (730), 3 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:08,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:08,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:08,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 01:37:08,070 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:08,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 480433094, now seen corresponding path program 1 times [2023-09-01 01:37:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483729589] [2023-09-01 01:37:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:08,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:09,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:09,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:09,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483729589] [2023-09-01 01:37:09,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483729589] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:09,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:09,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:09,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989046682] [2023-09-01 01:37:09,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:09,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:09,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:09,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:09,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:09,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:09,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:09,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:09,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:09,636 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-09-01 01:37:09,637 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 01:37:09,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 319 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-09-01 01:37:09,637 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-09-01 01:37:09,637 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2023-09-01 01:37:09,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:09,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1402 transitions. [2023-09-01 01:37:09,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3947072072072072 [2023-09-01 01:37:09,643 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1402 transitions. [2023-09-01 01:37:09,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1402 transitions. [2023-09-01 01:37:09,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:09,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1402 transitions. [2023-09-01 01:37:09,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.66666666666666) internal successors, (1402), 6 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,651 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,651 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1402 transitions. [2023-09-01 01:37:09,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2023-09-01 01:37:09,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:09,652 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2023-09-01 01:37:09,653 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-09-01 01:37:09,653 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -4 predicate places. [2023-09-01 01:37:09,653 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2023-09-01 01:37:09,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:09,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:09,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:09,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 01:37:09,654 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:09,654 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:09,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1584453994, now seen corresponding path program 2 times [2023-09-01 01:37:09,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:09,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895061761] [2023-09-01 01:37:09,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:09,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895061761] [2023-09-01 01:37:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895061761] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352498022] [2023-09-01 01:37:10,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:10,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:10,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:10,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:10,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:10,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:10,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:10,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:10,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:10,969 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-09-01 01:37:10,971 INFO L131 PetriNetUnfolder]: For 67/67 co-relation queries the response was YES. [2023-09-01 01:37:10,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 402 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2023-09-01 01:37:10,972 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-09-01 01:37:10,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2023-09-01 01:37:10,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:10,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1400 transitions. [2023-09-01 01:37:10,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39414414414414417 [2023-09-01 01:37:10,977 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1400 transitions. [2023-09-01 01:37:10,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1400 transitions. [2023-09-01 01:37:10,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:10,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1400 transitions. [2023-09-01 01:37:10,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.33333333333334) internal successors, (1400), 6 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:10,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:10,987 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:10,987 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1400 transitions. [2023-09-01 01:37:10,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2023-09-01 01:37:10,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 01:37:10,991 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2023-09-01 01:37:10,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-09-01 01:37:10,992 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-09-01 01:37:10,992 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2023-09-01 01:37:10,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:10,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:10,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:10,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 01:37:10,993 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:10,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:10,994 INFO L85 PathProgramCache]: Analyzing trace with hash 541952938, now seen corresponding path program 3 times [2023-09-01 01:37:10,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:10,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487236839] [2023-09-01 01:37:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:10,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:11,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:11,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:11,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:11,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487236839] [2023-09-01 01:37:11,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487236839] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:11,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:11,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:11,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471992832] [2023-09-01 01:37:11,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:11,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:11,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:11,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:11,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:12,074 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:12,075 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:12,075 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:12,075 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:12,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:12,329 INFO L130 PetriNetUnfolder]: 20/70 cut-off events. [2023-09-01 01:37:12,329 INFO L131 PetriNetUnfolder]: For 105/105 co-relation queries the response was YES. [2023-09-01 01:37:12,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 193 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-09-01 01:37:12,330 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-09-01 01:37:12,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2023-09-01 01:37:12,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:12,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:12,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1398 transitions. [2023-09-01 01:37:12,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935810810810811 [2023-09-01 01:37:12,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1398 transitions. [2023-09-01 01:37:12,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1398 transitions. [2023-09-01 01:37:12,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:12,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1398 transitions. [2023-09-01 01:37:12,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 233.0) internal successors, (1398), 6 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:12,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:12,342 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:12,342 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1398 transitions. [2023-09-01 01:37:12,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2023-09-01 01:37:12,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-09-01 01:37:12,344 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2023-09-01 01:37:12,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-09-01 01:37:12,345 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-09-01 01:37:12,345 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2023-09-01 01:37:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:12,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:12,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:12,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 01:37:12,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:12,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:12,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1887480722, now seen corresponding path program 4 times [2023-09-01 01:37:12,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:12,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253639209] [2023-09-01 01:37:12,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:12,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:13,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:13,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253639209] [2023-09-01 01:37:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253639209] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:13,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:13,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542531193] [2023-09-01 01:37:13,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:13,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:13,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:13,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:13,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:13,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:13,246 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:13,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:13,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:13,501 INFO L130 PetriNetUnfolder]: 15/67 cut-off events. [2023-09-01 01:37:13,501 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2023-09-01 01:37:13,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2023-09-01 01:37:13,502 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-09-01 01:37:13,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2023-09-01 01:37:13,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:13,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:13,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1390 transitions. [2023-09-01 01:37:13,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39132882882882886 [2023-09-01 01:37:13,506 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1390 transitions. [2023-09-01 01:37:13,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1390 transitions. [2023-09-01 01:37:13,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:13,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1390 transitions. [2023-09-01 01:37:13,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 231.66666666666666) internal successors, (1390), 6 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,514 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,514 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1390 transitions. [2023-09-01 01:37:13,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2023-09-01 01:37:13,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-09-01 01:37:13,516 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2023-09-01 01:37:13,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-09-01 01:37:13,517 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-09-01 01:37:13,517 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2023-09-01 01:37:13,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:13,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:13,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:13,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 01:37:13,518 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:13,519 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:13,519 INFO L85 PathProgramCache]: Analyzing trace with hash 173379080, now seen corresponding path program 5 times [2023-09-01 01:37:13,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:13,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726636894] [2023-09-01 01:37:13,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:13,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:13,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:14,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726636894] [2023-09-01 01:37:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726636894] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622050947] [2023-09-01 01:37:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:14,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:14,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:14,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:14,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:14,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:14,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:14,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:14,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:15,038 INFO L130 PetriNetUnfolder]: 7/37 cut-off events. [2023-09-01 01:37:15,038 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 01:37:15,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2023-09-01 01:37:15,039 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-09-01 01:37:15,039 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2023-09-01 01:37:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:15,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1384 transitions. [2023-09-01 01:37:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38963963963963966 [2023-09-01 01:37:15,043 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1384 transitions. [2023-09-01 01:37:15,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1384 transitions. [2023-09-01 01:37:15,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:15,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1384 transitions. [2023-09-01 01:37:15,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 230.66666666666666) internal successors, (1384), 6 states have internal predecessors, (1384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:15,050 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:15,051 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:15,051 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1384 transitions. [2023-09-01 01:37:15,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2023-09-01 01:37:15,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-09-01 01:37:15,052 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2023-09-01 01:37:15,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2023-09-01 01:37:15,053 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-09-01 01:37:15,053 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2023-09-01 01:37:15,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:15,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:37:15,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:15,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 01:37:15,054 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:37:15,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:37:15,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1965810804, now seen corresponding path program 6 times [2023-09-01 01:37:15,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:37:15,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980851357] [2023-09-01 01:37:15,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:37:15,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:37:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:37:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:37:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:37:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980851357] [2023-09-01 01:37:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980851357] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:37:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:37:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:37:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152739928] [2023-09-01 01:37:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:37:15,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:37:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:37:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:37:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:37:16,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 592 [2023-09-01 01:37:16,028 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,029 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:37:16,029 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 592 [2023-09-01 01:37:16,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:37:16,256 INFO L130 PetriNetUnfolder]: 5/25 cut-off events. [2023-09-01 01:37:16,256 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 01:37:16,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2023-09-01 01:37:16,256 INFO L137 encePairwiseOnDemand]: 587/592 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-09-01 01:37:16,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2023-09-01 01:37:16,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:37:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:37:16,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1377 transitions. [2023-09-01 01:37:16,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3876689189189189 [2023-09-01 01:37:16,261 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1377 transitions. [2023-09-01 01:37:16,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1377 transitions. [2023-09-01 01:37:16,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:37:16,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1377 transitions. [2023-09-01 01:37:16,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 229.5) internal successors, (1377), 6 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,270 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 592.0) internal successors, (4144), 7 states have internal predecessors, (4144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,270 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1377 transitions. [2023-09-01 01:37:16,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2023-09-01 01:37:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-09-01 01:37:16,271 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-09-01 01:37:16,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=592, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-09-01 01:37:16,272 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-09-01 01:37:16,272 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-09-01 01:37:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 229.2) internal successors, (1146), 5 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:37:16,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-09-01 01:37:16,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-09-01 01:37:16,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-09-01 01:37:16,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-09-01 01:37:16,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-09-01 01:37:16,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-09-01 01:37:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-09-01 01:37:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-09-01 01:37:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-09-01 01:37:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-09-01 01:37:16,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-09-01 01:37:16,278 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-09-01 01:37:16,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 01:37:16,279 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:37:16,282 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 01:37:16,282 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 01:37:16,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:37:16 BasicIcfg [2023-09-01 01:37:16,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 01:37:16,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 01:37:16,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 01:37:16,286 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 01:37:16,287 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:56" (3/4) ... [2023-09-01 01:37:16,289 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 01:37:16,294 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 01:37:16,294 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 01:37:16,295 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 01:37:16,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2023-09-01 01:37:16,300 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 01:37:16,301 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 01:37:16,301 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 01:37:16,341 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 01:37:16,342 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 01:37:16,342 INFO L158 Benchmark]: Toolchain (without parser) took 20317.77ms. Allocated memory was 90.2MB in the beginning and 337.6MB in the end (delta: 247.5MB). Free memory was 71.3MB in the beginning and 278.1MB in the end (delta: -206.8MB). Peak memory consumption was 39.4MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,343 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:37:16,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 270.45ms. Allocated memory is still 90.2MB. Free memory was 71.3MB in the beginning and 59.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,343 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.00ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 57.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,344 INFO L158 Benchmark]: Boogie Preprocessor took 56.85ms. Allocated memory is still 90.2MB. Free memory was 57.2MB in the beginning and 55.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:37:16,344 INFO L158 Benchmark]: RCFGBuilder took 574.54ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 56.0MB in the end (delta: -528.0kB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,344 INFO L158 Benchmark]: TraceAbstraction took 19283.87ms. Allocated memory was 90.2MB in the beginning and 337.6MB in the end (delta: 247.5MB). Free memory was 55.3MB in the beginning and 282.3MB in the end (delta: -227.1MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,344 INFO L158 Benchmark]: Witness Printer took 56.00ms. Allocated memory is still 337.6MB. Free memory was 281.3MB in the beginning and 278.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:37:16,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 62.9MB. Free memory is still 41.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 270.45ms. Allocated memory is still 90.2MB. Free memory was 71.3MB in the beginning and 59.7MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 68.00ms. Allocated memory is still 90.2MB. Free memory was 59.7MB in the beginning and 57.2MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 56.85ms. Allocated memory is still 90.2MB. Free memory was 57.2MB in the beginning and 55.5MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 574.54ms. Allocated memory is still 90.2MB. Free memory was 55.5MB in the beginning and 56.0MB in the end (delta: -528.0kB). Peak memory consumption was 12.7MB. Max. memory is 16.1GB. * TraceAbstraction took 19283.87ms. Allocated memory was 90.2MB in the beginning and 337.6MB in the end (delta: 247.5MB). Free memory was 55.3MB in the beginning and 282.3MB in the end (delta: -227.1MB). Peak memory consumption was 22.5MB. Max. memory is 16.1GB. * Witness Printer took 56.00ms. Allocated memory is still 337.6MB. Free memory was 281.3MB in the beginning and 278.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.8s, 260 PlacesBefore, 39 PlacesAfterwards, 264 TransitionsBefore, 29 TransitionsAfterwards, 18330 CoEnabledTransitionPairs, 8 FixpointIterations, 99 TrivialSequentialCompositions, 157 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 48 ConcurrentYvCompositions, 14 ChoiceCompositions, 321 TotalNumberOfCompositions, 16655 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16655, independent: 16655, independent conditional: 0, independent unconditional: 16655, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10977, independent: 10977, independent conditional: 0, independent unconditional: 10977, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 16655, independent: 5678, independent conditional: 0, independent unconditional: 5678, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 10977, unknown conditional: 0, unknown unconditional: 10977] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 89]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 66]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 393 locations, 17 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: 19.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 9.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1169 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 712 mSDsluCounter, 313 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 221 mSDsCounter, 57 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1456 IncrementalHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 57 mSolverCounterUnsat, 92 mSDtfsCounter, 1456 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, 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, 0.3s SatisfiabilityAnalysisTime, 6.0s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3038 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 01:37:16,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE