./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-4.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/parallel-misc-4.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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --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 02:18:28,775 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:18:28,776 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:18:28,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:18:28,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:18:28,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:18:28,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:18:28,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:18:28,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:18:28,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:18:28,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:18:28,819 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:18:28,819 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:18:28,821 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:18:28,823 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:18:28,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:18:28,826 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:18:28,827 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:18:28,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:18:28,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:18:28,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:18:28,841 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:18:28,842 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:18:28,843 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:18:28,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:18:28,849 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:18:28,849 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:18:28,850 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:18:28,850 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:18:28,851 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:18:28,851 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:18:28,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:18:28,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:18:28,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:18:28,854 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:18:28,854 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:18:28,855 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:18:28,855 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:18:28,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:18:28,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:18:28,856 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:18:28,858 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:18:28,885 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:18:28,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:18:28,886 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:18:28,886 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:18:28,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:18:28,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:18:28,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:18:28,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:18:28,888 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:18:28,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:18:28,889 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:18:28,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:18:28,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:18:28,891 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:18:28,891 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:18:28,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:18:28,891 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:18:28,891 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:18:28,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:18:28,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:18:28,892 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:18:28,892 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:18:28,892 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:18:28,892 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:18:28,892 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:18:29,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:18:29,212 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:18:29,214 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:18:29,214 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:18:29,215 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:18:29,216 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-09-01 02:18:30,417 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:18:30,634 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:18:30,634 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2023-09-01 02:18:30,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a02135d/77d615e6a8014ed1b6adc59e188e650c/FLAGdb8205d9e [2023-09-01 02:18:31,010 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a02135d/77d615e6a8014ed1b6adc59e188e650c [2023-09-01 02:18:31,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:18:31,013 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:18:31,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:18:31,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:18:31,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:18:31,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,023 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2490e972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31, skipping insertion in model container [2023-09-01 02:18:31,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,028 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:18:31,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:18:31,168 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-09-01 02:18:31,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:18:31,179 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:18:31,196 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2023-09-01 02:18:31,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:18:31,205 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:18:31,205 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:18:31,210 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:18:31,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31 WrapperNode [2023-09-01 02:18:31,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:18:31,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:18:31,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:18:31,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:18:31,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,221 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,236 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2023-09-01 02:18:31,236 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:18:31,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:18:31,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:18:31,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:18:31,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,254 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,255 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:18:31,258 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:18:31,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:18:31,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:18:31,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (1/1) ... [2023-09-01 02:18:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:18:31,303 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:31,319 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 02:18:31,327 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 02:18:31,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:18:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:18:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:18:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:18:31,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:18:31,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 02:18:31,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 02:18:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:18:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:18:31,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:18:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:18:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:18:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:18:31,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:18:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:18:31,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:18:31,354 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 02:18:31,464 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:18:31,465 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:18:31,695 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:18:31,718 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:18:31,718 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 02:18:31,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:18:31 BoogieIcfgContainer [2023-09-01 02:18:31,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:18:31,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:18:31,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:18:31,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:18:31,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:18:31" (1/3) ... [2023-09-01 02:18:31,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248a2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:18:31, skipping insertion in model container [2023-09-01 02:18:31,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:18:31" (2/3) ... [2023-09-01 02:18:31,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4248a2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:18:31, skipping insertion in model container [2023-09-01 02:18:31,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:18:31" (3/3) ... [2023-09-01 02:18:31,727 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-09-01 02:18:31,740 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:18:31,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 02:18:31,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:18:31,834 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 02:18:31,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 119 transitions, 262 flow [2023-09-01 02:18:31,913 INFO L130 PetriNetUnfolder]: 7/116 cut-off events. [2023-09-01 02:18:31,913 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:18:31,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 7/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-09-01 02:18:31,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 119 transitions, 262 flow [2023-09-01 02:18:31,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 242 flow [2023-09-01 02:18:31,924 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:18:31,932 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 242 flow [2023-09-01 02:18:31,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 242 flow [2023-09-01 02:18:31,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 242 flow [2023-09-01 02:18:31,956 INFO L130 PetriNetUnfolder]: 7/112 cut-off events. [2023-09-01 02:18:31,956 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 02:18:31,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 112 events. 7/112 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 85. Up to 2 conditions per place. [2023-09-01 02:18:31,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-09-01 02:18:35,602 INFO L134 LiptonReduction]: Checked pairs total: 2027 [2023-09-01 02:18:35,602 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-09-01 02:18:35,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:18:35,616 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;@748c570f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:18:35,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 02:18:35,617 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:18:35,617 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:18:35,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:35,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:18:35,618 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:35,621 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:35,621 INFO L85 PathProgramCache]: Analyzing trace with hash 445, now seen corresponding path program 1 times [2023-09-01 02:18:35,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:35,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711460430] [2023-09-01 02:18:35,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:35,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:35,692 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 02:18:35,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:35,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711460430] [2023-09-01 02:18:35,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711460430] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:35,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:35,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:18:35,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828635572] [2023-09-01 02:18:35,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:35,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:18:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:35,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:18:35,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:18:35,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 227 [2023-09-01 02:18:35,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 02:18:35,727 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:35,727 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 227 [2023-09-01 02:18:35,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:35,855 INFO L130 PetriNetUnfolder]: 356/556 cut-off events. [2023-09-01 02:18:35,855 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 02:18:35,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1155 conditions, 556 events. 356/556 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2383 event pairs, 270 based on Foata normal form. 0/328 useless extension candidates. Maximal degree in co-relation 929. Up to 552 conditions per place. [2023-09-01 02:18:35,864 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-09-01 02:18:35,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 140 flow [2023-09-01 02:18:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:18:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:18:35,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 246 transitions. [2023-09-01 02:18:35,881 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418502202643172 [2023-09-01 02:18:35,884 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 246 transitions. [2023-09-01 02:18:35,886 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 246 transitions. [2023-09-01 02:18:35,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:35,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 246 transitions. [2023-09-01 02:18:35,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 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 02:18:35,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 02:18:35,907 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 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 02:18:35,909 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 246 transitions. [2023-09-01 02:18:35,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 140 flow [2023-09-01 02:18:35,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 02:18:35,914 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2023-09-01 02:18:35,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-09-01 02:18:35,920 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:18:35,921 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2023-09-01 02:18:35,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 107.5) internal successors, (215), 2 states have internal predecessors, (215), 0 states have call successors, (0), 0 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 02:18:35,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:35,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:18:35,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:18:35,925 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:35,926 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash 436374, now seen corresponding path program 1 times [2023-09-01 02:18:35,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:35,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070982183] [2023-09-01 02:18:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:35,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:36,192 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 02:18:36,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:36,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070982183] [2023-09-01 02:18:36,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070982183] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:36,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:36,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:36,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930719845] [2023-09-01 02:18:36,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:36,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:36,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:36,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:36,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:36,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 227 [2023-09-01 02:18:36,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 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 02:18:36,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:36,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 227 [2023-09-01 02:18:36,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:36,312 INFO L130 PetriNetUnfolder]: 340/529 cut-off events. [2023-09-01 02:18:36,312 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:36,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 529 events. 340/529 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2240 event pairs, 258 based on Foata normal form. 0/317 useless extension candidates. Maximal degree in co-relation 1069. Up to 524 conditions per place. [2023-09-01 02:18:36,316 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-09-01 02:18:36,316 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 120 flow [2023-09-01 02:18:36,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-09-01 02:18:36,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4919236417033774 [2023-09-01 02:18:36,321 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-09-01 02:18:36,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-09-01 02:18:36,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:36,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-09-01 02:18:36,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:36,326 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,327 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 335 transitions. [2023-09-01 02:18:36,327 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 120 flow [2023-09-01 02:18:36,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:18:36,328 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2023-09-01 02:18:36,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-09-01 02:18:36,329 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:18:36,329 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2023-09-01 02:18:36,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.0) internal successors, (309), 3 states have internal predecessors, (309), 0 states have call successors, (0), 0 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 02:18:36,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:36,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:18:36,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:18:36,331 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:36,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash 436373, now seen corresponding path program 1 times [2023-09-01 02:18:36,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:36,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457841670] [2023-09-01 02:18:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:36,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:36,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:36,417 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 02:18:36,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:36,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457841670] [2023-09-01 02:18:36,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457841670] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:36,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:36,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:36,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633026492] [2023-09-01 02:18:36,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:36,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:36,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:36,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:36,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:36,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-09-01 02:18:36,455 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 02:18:36,455 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:36,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-09-01 02:18:36,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:36,518 INFO L130 PetriNetUnfolder]: 324/502 cut-off events. [2023-09-01 02:18:36,518 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:36,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 502 events. 324/502 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2096 event pairs, 246 based on Foata normal form. 0/306 useless extension candidates. Maximal degree in co-relation 1016. Up to 497 conditions per place. [2023-09-01 02:18:36,522 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-09-01 02:18:36,522 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 114 flow [2023-09-01 02:18:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:36,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-09-01 02:18:36,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669603524229075 [2023-09-01 02:18:36,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-09-01 02:18:36,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-09-01 02:18:36,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:36,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-09-01 02:18:36,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:36,528 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,528 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,528 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 318 transitions. [2023-09-01 02:18:36,529 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 114 flow [2023-09-01 02:18:36,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:36,530 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-09-01 02:18:36,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-09-01 02:18:36,550 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-09-01 02:18:36,553 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-09-01 02:18:36,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 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 02:18:36,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:36,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:18:36,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:18:36,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:36,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:36,555 INFO L85 PathProgramCache]: Analyzing trace with hash 419366196, now seen corresponding path program 1 times [2023-09-01 02:18:36,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:36,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968311750] [2023-09-01 02:18:36,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:36,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:36,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:36,657 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 02:18:36,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:36,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968311750] [2023-09-01 02:18:36,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968311750] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:36,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:36,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:36,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179864359] [2023-09-01 02:18:36,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:36,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:36,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:36,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:36,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:36,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-09-01 02:18:36,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 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 02:18:36,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:36,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-09-01 02:18:36,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:36,754 INFO L130 PetriNetUnfolder]: 303/467 cut-off events. [2023-09-01 02:18:36,754 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:36,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 951 conditions, 467 events. 303/467 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1927 event pairs, 231 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 947. Up to 462 conditions per place. [2023-09-01 02:18:36,758 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-09-01 02:18:36,758 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 107 flow [2023-09-01 02:18:36,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:36,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 316 transitions. [2023-09-01 02:18:36,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46402349486049926 [2023-09-01 02:18:36,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 316 transitions. [2023-09-01 02:18:36,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 316 transitions. [2023-09-01 02:18:36,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:36,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 316 transitions. [2023-09-01 02:18:36,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.33333333333333) internal successors, (316), 3 states have internal predecessors, (316), 0 states have call successors, (0), 0 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 02:18:36,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,763 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 316 transitions. [2023-09-01 02:18:36,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 107 flow [2023-09-01 02:18:36,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:36,764 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2023-09-01 02:18:36,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-09-01 02:18:36,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-09-01 02:18:36,765 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2023-09-01 02:18:36,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 0 states have call successors, (0), 0 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 02:18:36,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:36,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:18:36,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:18:36,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:36,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 419366194, now seen corresponding path program 1 times [2023-09-01 02:18:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10282644] [2023-09-01 02:18:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:36,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:36,823 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 02:18:36,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:36,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10282644] [2023-09-01 02:18:36,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10282644] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:36,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:36,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:36,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309932403] [2023-09-01 02:18:36,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:36,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:36,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:36,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:36,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:36,853 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 227 [2023-09-01 02:18:36,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 02:18:36,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:36,854 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 227 [2023-09-01 02:18:36,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:36,899 INFO L130 PetriNetUnfolder]: 282/432 cut-off events. [2023-09-01 02:18:36,899 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:36,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 432 events. 282/432 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1709 event pairs, 216 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 878. Up to 427 conditions per place. [2023-09-01 02:18:36,902 INFO L137 encePairwiseOnDemand]: 224/227 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 02:18:36,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 100 flow [2023-09-01 02:18:36,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:36,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:36,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-09-01 02:18:36,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4831130690161527 [2023-09-01 02:18:36,904 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-09-01 02:18:36,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-09-01 02:18:36,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:36,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-09-01 02:18:36,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:36,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:36,908 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 329 transitions. [2023-09-01 02:18:36,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 100 flow [2023-09-01 02:18:36,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:36,909 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2023-09-01 02:18:36,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-09-01 02:18:36,910 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:18:36,910 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2023-09-01 02:18:36,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 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 02:18:36,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:36,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:36,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:18:36,911 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:36,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash -716002685, now seen corresponding path program 1 times [2023-09-01 02:18:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:36,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946970777] [2023-09-01 02:18:36,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:36,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:36,953 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 02:18:36,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:36,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946970777] [2023-09-01 02:18:36,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946970777] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:36,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:36,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:18:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092042698] [2023-09-01 02:18:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:36,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:18:36,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:36,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:18:36,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:18:36,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 227 [2023-09-01 02:18:36,984 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 02:18:36,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:36,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 227 [2023-09-01 02:18:36,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:37,035 INFO L130 PetriNetUnfolder]: 224/350 cut-off events. [2023-09-01 02:18:37,036 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:37,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 350 events. 224/350 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1321 event pairs, 170 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 715. Up to 345 conditions per place. [2023-09-01 02:18:37,038 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-09-01 02:18:37,038 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 97 flow [2023-09-01 02:18:37,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:37,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:37,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 315 transitions. [2023-09-01 02:18:37,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46255506607929514 [2023-09-01 02:18:37,040 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 315 transitions. [2023-09-01 02:18:37,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 315 transitions. [2023-09-01 02:18:37,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:37,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 315 transitions. [2023-09-01 02:18:37,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 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 02:18:37,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:37,043 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:37,043 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 315 transitions. [2023-09-01 02:18:37,044 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 97 flow [2023-09-01 02:18:37,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:37,045 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2023-09-01 02:18:37,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-09-01 02:18:37,047 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:18:37,047 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2023-09-01 02:18:37,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 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 02:18:37,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:37,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:37,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:18:37,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:37,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:37,049 INFO L85 PathProgramCache]: Analyzing trace with hash -716002686, now seen corresponding path program 1 times [2023-09-01 02:18:37,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:37,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097782405] [2023-09-01 02:18:37,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:37,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:37,153 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 02:18:37,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:37,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097782405] [2023-09-01 02:18:37,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097782405] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:37,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:37,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:18:37,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285778126] [2023-09-01 02:18:37,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:18:37,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:37,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:18:37,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:18:37,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 227 [2023-09-01 02:18:37,250 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 02:18:37,250 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:37,250 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 227 [2023-09-01 02:18:37,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:37,297 INFO L130 PetriNetUnfolder]: 166/268 cut-off events. [2023-09-01 02:18:37,298 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 02:18:37,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556 conditions, 268 events. 166/268 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 965 event pairs, 124 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 552. Up to 263 conditions per place. [2023-09-01 02:18:37,300 INFO L137 encePairwiseOnDemand]: 225/227 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 02:18:37,300 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 94 flow [2023-09-01 02:18:37,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:18:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:18:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2023-09-01 02:18:37,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42143906020558003 [2023-09-01 02:18:37,302 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2023-09-01 02:18:37,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2023-09-01 02:18:37,302 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:37,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2023-09-01 02:18:37,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 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 02:18:37,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:37,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 227.0) internal successors, (908), 4 states have internal predecessors, (908), 0 states have call successors, (0), 0 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 02:18:37,306 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 287 transitions. [2023-09-01 02:18:37,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 94 flow [2023-09-01 02:18:37,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:37,307 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2023-09-01 02:18:37,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-09-01 02:18:37,307 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-09-01 02:18:37,308 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2023-09-01 02:18:37,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 90.4) internal successors, (452), 5 states have internal predecessors, (452), 0 states have call successors, (0), 0 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 02:18:37,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:37,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:37,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:18:37,309 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 02:18:37,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:37,309 INFO L85 PathProgramCache]: Analyzing trace with hash 751576771, now seen corresponding path program 1 times [2023-09-01 02:18:37,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:37,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312638738] [2023-09-01 02:18:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:37,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:37,682 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 02:18:37,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:37,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312638738] [2023-09-01 02:18:37,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312638738] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:37,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:37,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:18:37,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869371663] [2023-09-01 02:18:37,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:37,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:18:37,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:18:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:18:37,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 227 [2023-09-01 02:18:37,705 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 02:18:37,705 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:37,705 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 227 [2023-09-01 02:18:37,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:37,769 INFO L130 PetriNetUnfolder]: 190/289 cut-off events. [2023-09-01 02:18:37,769 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:18:37,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 603 conditions, 289 events. 190/289 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 967 event pairs, 9 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 599. Up to 135 conditions per place. [2023-09-01 02:18:37,771 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 33 selfloop transitions, 4 changer transitions 0/38 dead transitions. [2023-09-01 02:18:37,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 38 transitions, 165 flow [2023-09-01 02:18:37,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:18:37,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:18:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 442 transitions. [2023-09-01 02:18:37,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.486784140969163 [2023-09-01 02:18:37,772 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 442 transitions. [2023-09-01 02:18:37,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 442 transitions. [2023-09-01 02:18:37,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:37,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 442 transitions. [2023-09-01 02:18:37,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.5) internal successors, (442), 4 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:37,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 02:18:37,774 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 02:18:37,774 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 442 transitions. [2023-09-01 02:18:37,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 38 transitions, 165 flow [2023-09-01 02:18:37,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 161 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:18:37,775 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2023-09-01 02:18:37,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-09-01 02:18:37,776 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-09-01 02:18:37,776 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2023-09-01 02:18:37,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 02:18:37,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:37,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:37,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:18:37,776 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 02:18:37,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:37,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1774895439, now seen corresponding path program 2 times [2023-09-01 02:18:37,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:37,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382266469] [2023-09-01 02:18:37,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:37,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:38,078 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 02:18:38,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:38,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382266469] [2023-09-01 02:18:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382266469] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:18:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172997240] [2023-09-01 02:18:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:38,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:18:38,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:38,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:18:38,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:18:38,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 227 [2023-09-01 02:18:38,110 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 02:18:38,110 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:38,110 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 227 [2023-09-01 02:18:38,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:38,168 INFO L130 PetriNetUnfolder]: 98/172 cut-off events. [2023-09-01 02:18:38,168 INFO L131 PetriNetUnfolder]: For 19/32 co-relation queries the response was YES. [2023-09-01 02:18:38,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 172 events. 98/172 cut-off events. For 19/32 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 490 event pairs, 9 based on Foata normal form. 13/175 useless extension candidates. Maximal degree in co-relation 386. Up to 103 conditions per place. [2023-09-01 02:18:38,169 INFO L137 encePairwiseOnDemand]: 223/227 looper letters, 26 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2023-09-01 02:18:38,169 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 35 transitions, 165 flow [2023-09-01 02:18:38,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-09-01 02:18:38,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-09-01 02:18:38,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 435 transitions. [2023-09-01 02:18:38,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4790748898678414 [2023-09-01 02:18:38,171 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 435 transitions. [2023-09-01 02:18:38,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 435 transitions. [2023-09-01 02:18:38,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:38,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 435 transitions. [2023-09-01 02:18:38,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 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 02:18:38,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 02:18:38,173 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 227.0) internal successors, (1135), 5 states have internal predecessors, (1135), 0 states have call successors, (0), 0 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 02:18:38,174 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 435 transitions. [2023-09-01 02:18:38,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 35 transitions, 165 flow [2023-09-01 02:18:38,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:38,175 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-09-01 02:18:38,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-09-01 02:18:38,175 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-09-01 02:18:38,175 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-09-01 02:18:38,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 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 02:18:38,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:38,176 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:38,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:18:38,176 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 02:18:38,176 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:38,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1938670985, now seen corresponding path program 3 times [2023-09-01 02:18:38,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:38,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297070881] [2023-09-01 02:18:38,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:38,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:38,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:38,349 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 02:18:38,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:38,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297070881] [2023-09-01 02:18:38,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297070881] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:38,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:38,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 02:18:38,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161307705] [2023-09-01 02:18:38,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:38,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:18:38,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:38,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:18:38,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:18:38,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 227 [2023-09-01 02:18:38,368 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 02:18:38,368 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:38,369 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 227 [2023-09-01 02:18:38,369 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:38,453 INFO L130 PetriNetUnfolder]: 154/249 cut-off events. [2023-09-01 02:18:38,453 INFO L131 PetriNetUnfolder]: For 100/110 co-relation queries the response was YES. [2023-09-01 02:18:38,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 249 events. 154/249 cut-off events. For 100/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 764 event pairs, 12 based on Foata normal form. 18/267 useless extension candidates. Maximal degree in co-relation 622. Up to 87 conditions per place. [2023-09-01 02:18:38,454 INFO L137 encePairwiseOnDemand]: 221/227 looper letters, 34 selfloop transitions, 8 changer transitions 0/44 dead transitions. [2023-09-01 02:18:38,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 44 transitions, 224 flow [2023-09-01 02:18:38,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-09-01 02:18:38,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-09-01 02:18:38,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2023-09-01 02:18:38,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47665198237885464 [2023-09-01 02:18:38,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2023-09-01 02:18:38,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2023-09-01 02:18:38,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:38,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2023-09-01 02:18:38,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 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 02:18:38,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 02:18:38,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 227.0) internal successors, (1362), 6 states have internal predecessors, (1362), 0 states have call successors, (0), 0 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 02:18:38,460 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 541 transitions. [2023-09-01 02:18:38,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 44 transitions, 224 flow [2023-09-01 02:18:38,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 219 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:18:38,462 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2023-09-01 02:18:38,462 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-09-01 02:18:38,463 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-09-01 02:18:38,463 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2023-09-01 02:18:38,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.25) internal successors, (417), 4 states have internal predecessors, (417), 0 states have call successors, (0), 0 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 02:18:38,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:38,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:38,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:18:38,464 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 02:18:38,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:38,464 INFO L85 PathProgramCache]: Analyzing trace with hash 456787813, now seen corresponding path program 4 times [2023-09-01 02:18:38,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:38,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734713628] [2023-09-01 02:18:38,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:38,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:38,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:38,619 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 02:18:38,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:38,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734713628] [2023-09-01 02:18:38,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734713628] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:38,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:38,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 02:18:38,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429114335] [2023-09-01 02:18:38,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:38,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:18:38,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:38,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:18:38,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:18:38,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 227 [2023-09-01 02:18:38,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:38,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:38,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 227 [2023-09-01 02:18:38,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:38,750 INFO L130 PetriNetUnfolder]: 239/394 cut-off events. [2023-09-01 02:18:38,751 INFO L131 PetriNetUnfolder]: For 459/472 co-relation queries the response was YES. [2023-09-01 02:18:38,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1130 conditions, 394 events. 239/394 cut-off events. For 459/472 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1342 event pairs, 15 based on Foata normal form. 27/421 useless extension candidates. Maximal degree in co-relation 1121. Up to 236 conditions per place. [2023-09-01 02:18:38,753 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 31 selfloop transitions, 3 changer transitions 26/62 dead transitions. [2023-09-01 02:18:38,753 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 378 flow [2023-09-01 02:18:38,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:18:38,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:18:38,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 733 transitions. [2023-09-01 02:18:38,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46129641283826306 [2023-09-01 02:18:38,755 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 733 transitions. [2023-09-01 02:18:38,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 733 transitions. [2023-09-01 02:18:38,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:38,755 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 733 transitions. [2023-09-01 02:18:38,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 104.71428571428571) internal successors, (733), 7 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:38,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 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 02:18:38,759 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 227.0) internal successors, (1816), 8 states have internal predecessors, (1816), 0 states have call successors, (0), 0 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 02:18:38,760 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 733 transitions. [2023-09-01 02:18:38,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 378 flow [2023-09-01 02:18:38,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 62 transitions, 366 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-09-01 02:18:38,764 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2023-09-01 02:18:38,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2023-09-01 02:18:38,765 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-09-01 02:18:38,765 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2023-09-01 02:18:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:38,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:38,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:38,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:18:38,766 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 02:18:38,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:38,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1376646480, now seen corresponding path program 1 times [2023-09-01 02:18:38,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:38,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607548625] [2023-09-01 02:18:38,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:38,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:38,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:38,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607548625] [2023-09-01 02:18:38,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607548625] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:38,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:38,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:18:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122322619] [2023-09-01 02:18:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 02:18:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 02:18:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 02:18:38,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 227 [2023-09-01 02:18:38,890 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 02:18:38,890 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:38,890 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 227 [2023-09-01 02:18:38,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:39,068 INFO L130 PetriNetUnfolder]: 246/409 cut-off events. [2023-09-01 02:18:39,069 INFO L131 PetriNetUnfolder]: For 720/720 co-relation queries the response was YES. [2023-09-01 02:18:39,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 409 events. 246/409 cut-off events. For 720/720 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1274 event pairs, 0 based on Foata normal form. 20/429 useless extension candidates. Maximal degree in co-relation 1511. Up to 137 conditions per place. [2023-09-01 02:18:39,071 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 61 selfloop transitions, 17 changer transitions 8/86 dead transitions. [2023-09-01 02:18:39,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 599 flow [2023-09-01 02:18:39,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-09-01 02:18:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-09-01 02:18:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 944 transitions. [2023-09-01 02:18:39,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4620655898188938 [2023-09-01 02:18:39,074 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 944 transitions. [2023-09-01 02:18:39,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 944 transitions. [2023-09-01 02:18:39,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:39,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 944 transitions. [2023-09-01 02:18:39,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 104.88888888888889) internal successors, (944), 9 states have internal predecessors, (944), 0 states have call successors, (0), 0 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 02:18:39,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 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 02:18:39,080 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 227.0) internal successors, (2270), 10 states have internal predecessors, (2270), 0 states have call successors, (0), 0 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 02:18:39,080 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 9 states and 944 transitions. [2023-09-01 02:18:39,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 599 flow [2023-09-01 02:18:39,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 86 transitions, 570 flow, removed 12 selfloop flow, removed 3 redundant places. [2023-09-01 02:18:39,085 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 294 flow [2023-09-01 02:18:39,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=294, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2023-09-01 02:18:39,085 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 17 predicate places. [2023-09-01 02:18:39,086 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 294 flow [2023-09-01 02:18:39,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.0) internal successors, (500), 5 states have internal predecessors, (500), 0 states have call successors, (0), 0 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 02:18:39,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:39,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:39,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 02:18:39,086 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 02:18:39,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1246459556, now seen corresponding path program 2 times [2023-09-01 02:18:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328912358] [2023-09-01 02:18:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:39,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:39,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:39,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328912358] [2023-09-01 02:18:39,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328912358] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:39,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:39,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:18:39,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87461597] [2023-09-01 02:18:39,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:39,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:18:39,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:39,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:18:39,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:18:39,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 227 [2023-09-01 02:18:39,379 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 02:18:39,380 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:39,380 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 227 [2023-09-01 02:18:39,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:39,531 INFO L130 PetriNetUnfolder]: 277/523 cut-off events. [2023-09-01 02:18:39,531 INFO L131 PetriNetUnfolder]: For 2560/2584 co-relation queries the response was YES. [2023-09-01 02:18:39,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2382 conditions, 523 events. 277/523 cut-off events. For 2560/2584 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2218 event pairs, 16 based on Foata normal form. 38/550 useless extension candidates. Maximal degree in co-relation 2364. Up to 257 conditions per place. [2023-09-01 02:18:39,535 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 41 selfloop transitions, 5 changer transitions 40/94 dead transitions. [2023-09-01 02:18:39,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 94 transitions, 834 flow [2023-09-01 02:18:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:18:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:18:39,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 811 transitions. [2023-09-01 02:18:39,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44658590308370044 [2023-09-01 02:18:39,538 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 811 transitions. [2023-09-01 02:18:39,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 811 transitions. [2023-09-01 02:18:39,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:39,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 811 transitions. [2023-09-01 02:18:39,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 101.375) internal successors, (811), 8 states have internal predecessors, (811), 0 states have call successors, (0), 0 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 02:18:39,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 02:18:39,543 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 02:18:39,543 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 294 flow. Second operand 8 states and 811 transitions. [2023-09-01 02:18:39,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 94 transitions, 834 flow [2023-09-01 02:18:39,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 94 transitions, 789 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-09-01 02:18:39,553 INFO L231 Difference]: Finished difference. Result has 68 places, 42 transitions, 336 flow [2023-09-01 02:18:39,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=336, PETRI_PLACES=68, PETRI_TRANSITIONS=42} [2023-09-01 02:18:39,553 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 25 predicate places. [2023-09-01 02:18:39,553 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 42 transitions, 336 flow [2023-09-01 02:18:39,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 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 02:18:39,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:39,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:39,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 02:18:39,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:39,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:39,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1142820548, now seen corresponding path program 1 times [2023-09-01 02:18:39,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:39,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395275331] [2023-09-01 02:18:39,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:39,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:39,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:39,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:39,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395275331] [2023-09-01 02:18:39,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395275331] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:18:39,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:18:39,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:18:39,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459560614] [2023-09-01 02:18:39,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:18:39,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-09-01 02:18:39,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:39,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-09-01 02:18:39,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-09-01 02:18:39,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 227 [2023-09-01 02:18:39,910 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 42 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 02:18:39,910 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:39,910 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 227 [2023-09-01 02:18:39,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:40,071 INFO L130 PetriNetUnfolder]: 349/587 cut-off events. [2023-09-01 02:18:40,071 INFO L131 PetriNetUnfolder]: For 4281/4320 co-relation queries the response was YES. [2023-09-01 02:18:40,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3177 conditions, 587 events. 349/587 cut-off events. For 4281/4320 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2179 event pairs, 33 based on Foata normal form. 47/629 useless extension candidates. Maximal degree in co-relation 3155. Up to 373 conditions per place. [2023-09-01 02:18:40,074 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 47 selfloop transitions, 5 changer transitions 34/89 dead transitions. [2023-09-01 02:18:40,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 89 transitions, 935 flow [2023-09-01 02:18:40,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 02:18:40,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 02:18:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 807 transitions. [2023-09-01 02:18:40,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44438325991189426 [2023-09-01 02:18:40,076 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 807 transitions. [2023-09-01 02:18:40,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 807 transitions. [2023-09-01 02:18:40,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:40,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 807 transitions. [2023-09-01 02:18:40,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.875) internal successors, (807), 8 states have internal predecessors, (807), 0 states have call successors, (0), 0 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 02:18:40,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 02:18:40,080 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 227.0) internal successors, (2043), 9 states have internal predecessors, (2043), 0 states have call successors, (0), 0 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 02:18:40,080 INFO L175 Difference]: Start difference. First operand has 68 places, 42 transitions, 336 flow. Second operand 8 states and 807 transitions. [2023-09-01 02:18:40,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 89 transitions, 935 flow [2023-09-01 02:18:40,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 888 flow, removed 20 selfloop flow, removed 4 redundant places. [2023-09-01 02:18:40,088 INFO L231 Difference]: Finished difference. Result has 72 places, 44 transitions, 386 flow [2023-09-01 02:18:40,088 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=386, PETRI_PLACES=72, PETRI_TRANSITIONS=44} [2023-09-01 02:18:40,088 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 29 predicate places. [2023-09-01 02:18:40,088 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 44 transitions, 386 flow [2023-09-01 02:18:40,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.16666666666667) internal successors, (577), 6 states have internal predecessors, (577), 0 states have call successors, (0), 0 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 02:18:40,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:40,089 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:40,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 02:18:40,089 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:40,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -475924067, now seen corresponding path program 3 times [2023-09-01 02:18:40,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:40,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62844970] [2023-09-01 02:18:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:40,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:40,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:40,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:40,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:40,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62844970] [2023-09-01 02:18:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62844970] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865098551] [2023-09-01 02:18:40,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:18:40,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:40,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:40,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:40,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 02:18:40,473 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:18:40,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:40,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 02:18:40,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:40,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865098551] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:41,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:41,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 12 [2023-09-01 02:18:41,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515486224] [2023-09-01 02:18:41,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:41,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-09-01 02:18:41,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:41,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-09-01 02:18:41,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-09-01 02:18:41,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 227 [2023-09-01 02:18:41,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 44 transitions, 386 flow. Second operand has 13 states, 13 states have (on average 91.53846153846153) internal successors, (1190), 13 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 02:18:41,123 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:41,123 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 227 [2023-09-01 02:18:41,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:41,619 INFO L130 PetriNetUnfolder]: 388/655 cut-off events. [2023-09-01 02:18:41,619 INFO L131 PetriNetUnfolder]: For 6762/6762 co-relation queries the response was YES. [2023-09-01 02:18:41,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 655 events. 388/655 cut-off events. For 6762/6762 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2428 event pairs, 13 based on Foata normal form. 58/713 useless extension candidates. Maximal degree in co-relation 3745. Up to 187 conditions per place. [2023-09-01 02:18:41,624 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 58 selfloop transitions, 20 changer transitions 64/142 dead transitions. [2023-09-01 02:18:41,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 142 transitions, 1669 flow [2023-09-01 02:18:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:18:41,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:18:41,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1888 transitions. [2023-09-01 02:18:41,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41585903083700443 [2023-09-01 02:18:41,629 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1888 transitions. [2023-09-01 02:18:41,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1888 transitions. [2023-09-01 02:18:41,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:41,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1888 transitions. [2023-09-01 02:18:41,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.4) internal successors, (1888), 20 states have internal predecessors, (1888), 0 states have call successors, (0), 0 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 02:18:41,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 227.0) internal successors, (4767), 21 states have internal predecessors, (4767), 0 states have call successors, (0), 0 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 02:18:41,637 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 227.0) internal successors, (4767), 21 states have internal predecessors, (4767), 0 states have call successors, (0), 0 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 02:18:41,637 INFO L175 Difference]: Start difference. First operand has 72 places, 44 transitions, 386 flow. Second operand 20 states and 1888 transitions. [2023-09-01 02:18:41,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 142 transitions, 1669 flow [2023-09-01 02:18:41,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 142 transitions, 1492 flow, removed 84 selfloop flow, removed 6 redundant places. [2023-09-01 02:18:41,650 INFO L231 Difference]: Finished difference. Result has 95 places, 48 transitions, 498 flow [2023-09-01 02:18:41,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=498, PETRI_PLACES=95, PETRI_TRANSITIONS=48} [2023-09-01 02:18:41,651 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 52 predicate places. [2023-09-01 02:18:41,651 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 48 transitions, 498 flow [2023-09-01 02:18:41,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 91.53846153846153) internal successors, (1190), 13 states have internal predecessors, (1190), 0 states have call successors, (0), 0 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 02:18:41,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:41,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:41,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 02:18:41,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 02:18:41,857 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:41,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:41,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1700429557, now seen corresponding path program 1 times [2023-09-01 02:18:41,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:41,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245348112] [2023-09-01 02:18:41,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:41,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:42,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245348112] [2023-09-01 02:18:42,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245348112] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:42,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741779940] [2023-09-01 02:18:42,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:42,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:42,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:42,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:42,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 02:18:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:42,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 12 conjunts are in the unsatisfiable core [2023-09-01 02:18:42,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:42,494 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:42,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:42,776 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:42,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741779940] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:42,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:42,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-09-01 02:18:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112184994] [2023-09-01 02:18:42,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:42,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 02:18:42,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:42,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 02:18:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-09-01 02:18:42,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-09-01 02:18:42,917 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 48 transitions, 498 flow. Second operand has 16 states, 16 states have (on average 88.875) internal successors, (1422), 16 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:42,917 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:42,917 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-09-01 02:18:42,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:44,212 INFO L130 PetriNetUnfolder]: 691/1285 cut-off events. [2023-09-01 02:18:44,212 INFO L131 PetriNetUnfolder]: For 29523/29586 co-relation queries the response was YES. [2023-09-01 02:18:44,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9386 conditions, 1285 events. 691/1285 cut-off events. For 29523/29586 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6566 event pairs, 10 based on Foata normal form. 91/1356 useless extension candidates. Maximal degree in co-relation 9351. Up to 389 conditions per place. [2023-09-01 02:18:44,224 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 115 selfloop transitions, 66 changer transitions 140/330 dead transitions. [2023-09-01 02:18:44,224 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 330 transitions, 4223 flow [2023-09-01 02:18:44,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-09-01 02:18:44,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-09-01 02:18:44,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3982 transitions. [2023-09-01 02:18:44,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40795000512242596 [2023-09-01 02:18:44,234 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3982 transitions. [2023-09-01 02:18:44,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3982 transitions. [2023-09-01 02:18:44,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:44,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3982 transitions. [2023-09-01 02:18:44,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 92.6046511627907) internal successors, (3982), 43 states have internal predecessors, (3982), 0 states have call successors, (0), 0 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 02:18:44,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 227.0) internal successors, (9988), 44 states have internal predecessors, (9988), 0 states have call successors, (0), 0 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 02:18:44,271 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 227.0) internal successors, (9988), 44 states have internal predecessors, (9988), 0 states have call successors, (0), 0 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 02:18:44,271 INFO L175 Difference]: Start difference. First operand has 95 places, 48 transitions, 498 flow. Second operand 43 states and 3982 transitions. [2023-09-01 02:18:44,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 330 transitions, 4223 flow [2023-09-01 02:18:44,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 330 transitions, 3316 flow, removed 408 selfloop flow, removed 16 redundant places. [2023-09-01 02:18:44,346 INFO L231 Difference]: Finished difference. Result has 121 places, 103 transitions, 1347 flow [2023-09-01 02:18:44,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=1347, PETRI_PLACES=121, PETRI_TRANSITIONS=103} [2023-09-01 02:18:44,348 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 78 predicate places. [2023-09-01 02:18:44,348 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 103 transitions, 1347 flow [2023-09-01 02:18:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.875) internal successors, (1422), 16 states have internal predecessors, (1422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:18:44,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:44,350 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:44,369 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-09-01 02:18:44,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 02:18:44,558 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:44,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:44,558 INFO L85 PathProgramCache]: Analyzing trace with hash -245747109, now seen corresponding path program 2 times [2023-09-01 02:18:44,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:44,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242983525] [2023-09-01 02:18:44,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:44,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:44,757 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:44,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242983525] [2023-09-01 02:18:44,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242983525] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:44,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61002443] [2023-09-01 02:18:44,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:18:44,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:44,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:44,779 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:44,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 02:18:44,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:18:44,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:44,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 14 conjunts are in the unsatisfiable core [2023-09-01 02:18:44,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:45,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:45,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:45,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:45,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61002443] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:45,336 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:45,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2023-09-01 02:18:45,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393982831] [2023-09-01 02:18:45,337 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:45,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-09-01 02:18:45,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:45,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-09-01 02:18:45,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-09-01 02:18:45,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 227 [2023-09-01 02:18:45,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 103 transitions, 1347 flow. Second operand has 16 states, 16 states have (on average 91.375) internal successors, (1462), 16 states have internal predecessors, (1462), 0 states have call successors, (0), 0 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 02:18:45,473 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:45,473 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 227 [2023-09-01 02:18:45,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:47,327 INFO L130 PetriNetUnfolder]: 1075/1786 cut-off events. [2023-09-01 02:18:47,327 INFO L131 PetriNetUnfolder]: For 26002/26002 co-relation queries the response was YES. [2023-09-01 02:18:47,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11681 conditions, 1786 events. 1075/1786 cut-off events. For 26002/26002 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 8207 event pairs, 17 based on Foata normal form. 100/1886 useless extension candidates. Maximal degree in co-relation 11645. Up to 509 conditions per place. [2023-09-01 02:18:47,345 INFO L137 encePairwiseOnDemand]: 217/227 looper letters, 157 selfloop transitions, 80 changer transitions 150/387 dead transitions. [2023-09-01 02:18:47,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 387 transitions, 5070 flow [2023-09-01 02:18:47,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-09-01 02:18:47,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-09-01 02:18:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5696 transitions. [2023-09-01 02:18:47,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4113526395609157 [2023-09-01 02:18:47,355 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5696 transitions. [2023-09-01 02:18:47,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5696 transitions. [2023-09-01 02:18:47,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:47,357 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5696 transitions. [2023-09-01 02:18:47,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 93.37704918032787) internal successors, (5696), 61 states have internal predecessors, (5696), 0 states have call successors, (0), 0 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 02:18:47,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 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 02:18:47,382 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 227.0) internal successors, (14074), 62 states have internal predecessors, (14074), 0 states have call successors, (0), 0 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 02:18:47,382 INFO L175 Difference]: Start difference. First operand has 121 places, 103 transitions, 1347 flow. Second operand 61 states and 5696 transitions. [2023-09-01 02:18:47,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 387 transitions, 5070 flow [2023-09-01 02:18:47,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 387 transitions, 3352 flow, removed 827 selfloop flow, removed 11 redundant places. [2023-09-01 02:18:47,467 INFO L231 Difference]: Finished difference. Result has 193 places, 145 transitions, 1394 flow [2023-09-01 02:18:47,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=1394, PETRI_PLACES=193, PETRI_TRANSITIONS=145} [2023-09-01 02:18:47,467 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-09-01 02:18:47,468 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 145 transitions, 1394 flow [2023-09-01 02:18:47,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 91.375) internal successors, (1462), 16 states have internal predecessors, (1462), 0 states have call successors, (0), 0 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 02:18:47,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:47,468 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:47,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:47,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:47,675 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:47,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:47,675 INFO L85 PathProgramCache]: Analyzing trace with hash 163521168, now seen corresponding path program 2 times [2023-09-01 02:18:47,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:47,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047173055] [2023-09-01 02:18:47,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:47,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:48,028 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:48,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:48,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047173055] [2023-09-01 02:18:48,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047173055] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:48,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115018532] [2023-09-01 02:18:48,030 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:18:48,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:48,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:48,045 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:48,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 02:18:48,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:18:48,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:48,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 13 conjunts are in the unsatisfiable core [2023-09-01 02:18:48,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:48,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:48,711 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:48,711 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115018532] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:48,711 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:48,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 18 [2023-09-01 02:18:48,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129133163] [2023-09-01 02:18:48,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:18:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:18:48,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:18:48,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-09-01 02:18:48,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 145 transitions, 1394 flow. Second operand has 19 states, 19 states have (on average 86.36842105263158) internal successors, (1641), 19 states have internal predecessors, (1641), 0 states have call successors, (0), 0 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 02:18:48,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:48,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-09-01 02:18:48,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:50,585 INFO L130 PetriNetUnfolder]: 1628/2701 cut-off events. [2023-09-01 02:18:50,585 INFO L131 PetriNetUnfolder]: For 70364/70364 co-relation queries the response was YES. [2023-09-01 02:18:50,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15998 conditions, 2701 events. 1628/2701 cut-off events. For 70364/70364 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 13660 event pairs, 31 based on Foata normal form. 132/2833 useless extension candidates. Maximal degree in co-relation 15928. Up to 562 conditions per place. [2023-09-01 02:18:50,624 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 208 selfloop transitions, 116 changer transitions 140/464 dead transitions. [2023-09-01 02:18:50,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 464 transitions, 5447 flow [2023-09-01 02:18:50,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-09-01 02:18:50,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2023-09-01 02:18:50,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 4375 transitions. [2023-09-01 02:18:50,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933291378225299 [2023-09-01 02:18:50,633 INFO L72 ComplementDD]: Start complementDD. Operand 49 states and 4375 transitions. [2023-09-01 02:18:50,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 4375 transitions. [2023-09-01 02:18:50,635 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:50,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 49 states and 4375 transitions. [2023-09-01 02:18:50,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 50 states, 49 states have (on average 89.28571428571429) internal successors, (4375), 49 states have internal predecessors, (4375), 0 states have call successors, (0), 0 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 02:18:50,652 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 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 02:18:50,653 INFO L81 ComplementDD]: Finished complementDD. Result has 50 states, 50 states have (on average 227.0) internal successors, (11350), 50 states have internal predecessors, (11350), 0 states have call successors, (0), 0 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 02:18:50,653 INFO L175 Difference]: Start difference. First operand has 193 places, 145 transitions, 1394 flow. Second operand 49 states and 4375 transitions. [2023-09-01 02:18:50,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 464 transitions, 5447 flow [2023-09-01 02:18:50,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 464 transitions, 4502 flow, removed 467 selfloop flow, removed 37 redundant places. [2023-09-01 02:18:50,797 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 2113 flow [2023-09-01 02:18:50,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=49, PETRI_FLOW=2113, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2023-09-01 02:18:50,798 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 150 predicate places. [2023-09-01 02:18:50,798 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 2113 flow [2023-09-01 02:18:50,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 86.36842105263158) internal successors, (1641), 19 states have internal predecessors, (1641), 0 states have call successors, (0), 0 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 02:18:50,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:50,799 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:50,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:51,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-09-01 02:18:51,004 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:51,005 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:51,005 INFO L85 PathProgramCache]: Analyzing trace with hash -541230212, now seen corresponding path program 3 times [2023-09-01 02:18:51,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:51,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486666075] [2023-09-01 02:18:51,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:51,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:51,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:51,414 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:51,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486666075] [2023-09-01 02:18:51,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486666075] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:51,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940750610] [2023-09-01 02:18:51,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:18:51,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:51,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:51,429 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:51,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 02:18:51,551 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-09-01 02:18:51,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:51,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2023-09-01 02:18:51,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:18:51,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:51,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:18:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:52,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940750610] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:18:52,244 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:18:52,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-09-01 02:18:52,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731506772] [2023-09-01 02:18:52,244 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:18:52,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 02:18:52,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:18:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 02:18:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-09-01 02:18:52,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-09-01 02:18:52,388 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 2113 flow. Second operand has 21 states, 21 states have (on average 86.04761904761905) internal successors, (1807), 21 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 02:18:52,388 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:18:52,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-09-01 02:18:52,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:18:58,594 INFO L130 PetriNetUnfolder]: 3577/6088 cut-off events. [2023-09-01 02:18:58,594 INFO L131 PetriNetUnfolder]: For 157970/157970 co-relation queries the response was YES. [2023-09-01 02:18:58,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39586 conditions, 6088 events. 3577/6088 cut-off events. For 157970/157970 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 36983 event pairs, 127 based on Foata normal form. 358/6446 useless extension candidates. Maximal degree in co-relation 39520. Up to 1168 conditions per place. [2023-09-01 02:18:58,654 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 367 selfloop transitions, 347 changer transitions 365/1079 dead transitions. [2023-09-01 02:18:58,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 1079 transitions, 13773 flow [2023-09-01 02:18:58,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2023-09-01 02:18:58,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2023-09-01 02:18:58,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 11201 transitions. [2023-09-01 02:18:58,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3916159709111251 [2023-09-01 02:18:58,672 INFO L72 ComplementDD]: Start complementDD. Operand 126 states and 11201 transitions. [2023-09-01 02:18:58,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 126 states and 11201 transitions. [2023-09-01 02:18:58,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:18:58,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 126 states and 11201 transitions. [2023-09-01 02:18:58,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 127 states, 126 states have (on average 88.89682539682539) internal successors, (11201), 126 states have internal predecessors, (11201), 0 states have call successors, (0), 0 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 02:18:58,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 127 states, 127 states have (on average 227.0) internal successors, (28829), 127 states have internal predecessors, (28829), 0 states have call successors, (0), 0 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 02:18:58,723 INFO L81 ComplementDD]: Finished complementDD. Result has 127 states, 127 states have (on average 227.0) internal successors, (28829), 127 states have internal predecessors, (28829), 0 states have call successors, (0), 0 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 02:18:58,723 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 2113 flow. Second operand 126 states and 11201 transitions. [2023-09-01 02:18:58,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 1079 transitions, 13773 flow [2023-09-01 02:18:59,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 1079 transitions, 11978 flow, removed 796 selfloop flow, removed 30 redundant places. [2023-09-01 02:18:59,021 INFO L231 Difference]: Finished difference. Result has 340 places, 419 transitions, 5412 flow [2023-09-01 02:18:59,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=126, PETRI_FLOW=5412, PETRI_PLACES=340, PETRI_TRANSITIONS=419} [2023-09-01 02:18:59,022 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 297 predicate places. [2023-09-01 02:18:59,022 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 419 transitions, 5412 flow [2023-09-01 02:18:59,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 86.04761904761905) internal successors, (1807), 21 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 02:18:59,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:18:59,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:18:59,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-09-01 02:18:59,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:59,224 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:18:59,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:18:59,224 INFO L85 PathProgramCache]: Analyzing trace with hash 113633177, now seen corresponding path program 4 times [2023-09-01 02:18:59,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:18:59,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242903347] [2023-09-01 02:18:59,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:18:59,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:18:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:18:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:18:59,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:18:59,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242903347] [2023-09-01 02:18:59,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242903347] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:18:59,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [890988627] [2023-09-01 02:18:59,638 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:18:59,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:18:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:18:59,639 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:18:59,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 02:18:59,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:18:59,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:18:59,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:18:59,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:19:00,054 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:00,055 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:19:00,262 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:00,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [890988627] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:19:00,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:19:00,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 20 [2023-09-01 02:19:00,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051782131] [2023-09-01 02:19:00,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:19:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 02:19:00,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:19:00,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 02:19:00,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2023-09-01 02:19:00,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-09-01 02:19:00,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 419 transitions, 5412 flow. Second operand has 21 states, 21 states have (on average 88.80952380952381) internal successors, (1865), 21 states have internal predecessors, (1865), 0 states have call successors, (0), 0 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 02:19:00,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:19:00,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-09-01 02:19:00,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:19:05,084 INFO L130 PetriNetUnfolder]: 5774/9774 cut-off events. [2023-09-01 02:19:05,084 INFO L131 PetriNetUnfolder]: For 1118260/1118282 co-relation queries the response was YES. [2023-09-01 02:19:05,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97415 conditions, 9774 events. 5774/9774 cut-off events. For 1118260/1118282 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 64431 event pairs, 138 based on Foata normal form. 398/10154 useless extension candidates. Maximal degree in co-relation 97293. Up to 2136 conditions per place. [2023-09-01 02:19:05,249 INFO L137 encePairwiseOnDemand]: 219/227 looper letters, 330 selfloop transitions, 495 changer transitions 442/1273 dead transitions. [2023-09-01 02:19:05,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1273 transitions, 21798 flow [2023-09-01 02:19:05,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2023-09-01 02:19:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2023-09-01 02:19:05,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 7251 transitions. [2023-09-01 02:19:05,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40433837060168404 [2023-09-01 02:19:05,257 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 7251 transitions. [2023-09-01 02:19:05,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 7251 transitions. [2023-09-01 02:19:05,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:19:05,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 7251 transitions. [2023-09-01 02:19:05,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 91.78481012658227) internal successors, (7251), 79 states have internal predecessors, (7251), 0 states have call successors, (0), 0 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 02:19:05,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 227.0) internal successors, (18160), 80 states have internal predecessors, (18160), 0 states have call successors, (0), 0 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 02:19:05,278 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 227.0) internal successors, (18160), 80 states have internal predecessors, (18160), 0 states have call successors, (0), 0 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 02:19:05,279 INFO L175 Difference]: Start difference. First operand has 340 places, 419 transitions, 5412 flow. Second operand 79 states and 7251 transitions. [2023-09-01 02:19:05,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1273 transitions, 21798 flow [2023-09-01 02:19:07,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 1273 transitions, 16437 flow, removed 2486 selfloop flow, removed 82 redundant places. [2023-09-01 02:19:07,401 INFO L231 Difference]: Finished difference. Result has 320 places, 652 transitions, 9058 flow [2023-09-01 02:19:07,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=4598, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=9058, PETRI_PLACES=320, PETRI_TRANSITIONS=652} [2023-09-01 02:19:07,401 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 277 predicate places. [2023-09-01 02:19:07,402 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 652 transitions, 9058 flow [2023-09-01 02:19:07,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 88.80952380952381) internal successors, (1865), 21 states have internal predecessors, (1865), 0 states have call successors, (0), 0 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 02:19:07,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:19:07,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:19:07,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-09-01 02:19:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:19:07,607 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:19:07,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:19:07,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1677584677, now seen corresponding path program 5 times [2023-09-01 02:19:07,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:19:07,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327951996] [2023-09-01 02:19:07,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:19:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:19:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:19:08,317 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:08,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:19:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327951996] [2023-09-01 02:19:08,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327951996] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:19:08,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907911572] [2023-09-01 02:19:08,319 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:19:08,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:19:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:19:08,326 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:19:08,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 02:19:08,409 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2023-09-01 02:19:08,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:19:08,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 16 conjunts are in the unsatisfiable core [2023-09-01 02:19:08,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:19:08,686 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:08,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:19:08,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:08,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907911572] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:19:08,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:19:08,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2023-09-01 02:19:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722904715] [2023-09-01 02:19:08,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:19:08,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:19:08,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:19:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:19:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:19:09,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-09-01 02:19:09,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 652 transitions, 9058 flow. Second operand has 24 states, 24 states have (on average 88.0) internal successors, (2112), 24 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 02:19:09,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:19:09,146 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-09-01 02:19:09,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:19:17,475 INFO L130 PetriNetUnfolder]: 8745/16381 cut-off events. [2023-09-01 02:19:17,475 INFO L131 PetriNetUnfolder]: For 541146/541228 co-relation queries the response was YES. [2023-09-01 02:19:17,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134334 conditions, 16381 events. 8745/16381 cut-off events. For 541146/541228 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 135658 event pairs, 174 based on Foata normal form. 586/16786 useless extension candidates. Maximal degree in co-relation 134229. Up to 2926 conditions per place. [2023-09-01 02:19:17,668 INFO L137 encePairwiseOnDemand]: 220/227 looper letters, 505 selfloop transitions, 1173 changer transitions 693/2390 dead transitions. [2023-09-01 02:19:17,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 2390 transitions, 39410 flow [2023-09-01 02:19:17,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2023-09-01 02:19:17,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2023-09-01 02:19:17,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 9590 transitions. [2023-09-01 02:19:17,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40621823110809896 [2023-09-01 02:19:17,678 INFO L72 ComplementDD]: Start complementDD. Operand 104 states and 9590 transitions. [2023-09-01 02:19:17,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 104 states and 9590 transitions. [2023-09-01 02:19:17,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:19:17,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 104 states and 9590 transitions. [2023-09-01 02:19:17,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 105 states, 104 states have (on average 92.21153846153847) internal successors, (9590), 104 states have internal predecessors, (9590), 0 states have call successors, (0), 0 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 02:19:17,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 105 states, 105 states have (on average 227.0) internal successors, (23835), 105 states have internal predecessors, (23835), 0 states have call successors, (0), 0 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 02:19:17,709 INFO L81 ComplementDD]: Finished complementDD. Result has 105 states, 105 states have (on average 227.0) internal successors, (23835), 105 states have internal predecessors, (23835), 0 states have call successors, (0), 0 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 02:19:17,710 INFO L175 Difference]: Start difference. First operand has 320 places, 652 transitions, 9058 flow. Second operand 104 states and 9590 transitions. [2023-09-01 02:19:17,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 2390 transitions, 39410 flow [2023-09-01 02:19:21,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 2390 transitions, 32307 flow, removed 2683 selfloop flow, removed 52 redundant places. [2023-09-01 02:19:21,524 INFO L231 Difference]: Finished difference. Result has 372 places, 1463 transitions, 22776 flow [2023-09-01 02:19:21,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=8067, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=470, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=104, PETRI_FLOW=22776, PETRI_PLACES=372, PETRI_TRANSITIONS=1463} [2023-09-01 02:19:21,525 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 329 predicate places. [2023-09-01 02:19:21,525 INFO L495 AbstractCegarLoop]: Abstraction has has 372 places, 1463 transitions, 22776 flow [2023-09-01 02:19:21,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 88.0) internal successors, (2112), 24 states have internal predecessors, (2112), 0 states have call successors, (0), 0 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 02:19:21,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:19:21,525 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:19:21,535 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 02:19:21,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:19:21,726 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:19:21,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:19:21,726 INFO L85 PathProgramCache]: Analyzing trace with hash 2098640562, now seen corresponding path program 6 times [2023-09-01 02:19:21,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:19:21,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29491472] [2023-09-01 02:19:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:19:21,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:19:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:19:22,245 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:22,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:19:22,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29491472] [2023-09-01 02:19:22,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29491472] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:19:22,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [90336214] [2023-09-01 02:19:22,246 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:19:22,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:19:22,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:19:22,247 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:19:22,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 02:19:22,347 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2023-09-01 02:19:22,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:19:22,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 02:19:22,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:19:22,620 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:19:22,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:19:22,992 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:19:22,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [90336214] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:19:22,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:19:22,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 26 [2023-09-01 02:19:22,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340547538] [2023-09-01 02:19:22,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:19:22,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-09-01 02:19:22,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:19:22,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-09-01 02:19:22,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2023-09-01 02:19:23,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 227 [2023-09-01 02:19:23,202 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 372 places, 1463 transitions, 22776 flow. Second operand has 27 states, 27 states have (on average 85.77777777777777) internal successors, (2316), 27 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 02:19:23,202 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:19:23,202 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 227 [2023-09-01 02:19:23,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:19:40,220 INFO L130 PetriNetUnfolder]: 23380/39203 cut-off events. [2023-09-01 02:19:40,220 INFO L131 PetriNetUnfolder]: For 793093/793093 co-relation queries the response was YES. [2023-09-01 02:19:40,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274340 conditions, 39203 events. 23380/39203 cut-off events. For 793093/793093 co-relation queries the response was YES. Maximal size of possible extension queue 1460. Compared 313103 event pairs, 1093 based on Foata normal form. 2264/41467 useless extension candidates. Maximal degree in co-relation 274234. Up to 9700 conditions per place. [2023-09-01 02:19:40,792 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 1150 selfloop transitions, 1780 changer transitions 1828/4758 dead transitions. [2023-09-01 02:19:40,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 4758 transitions, 82199 flow [2023-09-01 02:19:40,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 121 states. [2023-09-01 02:19:40,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2023-09-01 02:19:40,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 10675 transitions. [2023-09-01 02:19:40,805 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38864819601703865 [2023-09-01 02:19:40,805 INFO L72 ComplementDD]: Start complementDD. Operand 121 states and 10675 transitions. [2023-09-01 02:19:40,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 121 states and 10675 transitions. [2023-09-01 02:19:40,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:19:40,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 121 states and 10675 transitions. [2023-09-01 02:19:40,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 122 states, 121 states have (on average 88.22314049586777) internal successors, (10675), 121 states have internal predecessors, (10675), 0 states have call successors, (0), 0 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 02:19:40,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 122 states, 122 states have (on average 227.0) internal successors, (27694), 122 states have internal predecessors, (27694), 0 states have call successors, (0), 0 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 02:19:40,841 INFO L81 ComplementDD]: Finished complementDD. Result has 122 states, 122 states have (on average 227.0) internal successors, (27694), 122 states have internal predecessors, (27694), 0 states have call successors, (0), 0 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 02:19:40,841 INFO L175 Difference]: Start difference. First operand has 372 places, 1463 transitions, 22776 flow. Second operand 121 states and 10675 transitions. [2023-09-01 02:19:40,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 4758 transitions, 82199 flow [2023-09-01 02:19:59,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 414 places, 4758 transitions, 77991 flow, removed 2072 selfloop flow, removed 32 redundant places. [2023-09-01 02:19:59,253 INFO L231 Difference]: Finished difference. Result has 519 places, 2568 transitions, 45186 flow [2023-09-01 02:19:59,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=21376, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1463, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=790, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=121, PETRI_FLOW=45186, PETRI_PLACES=519, PETRI_TRANSITIONS=2568} [2023-09-01 02:19:59,254 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 476 predicate places. [2023-09-01 02:19:59,254 INFO L495 AbstractCegarLoop]: Abstraction has has 519 places, 2568 transitions, 45186 flow [2023-09-01 02:19:59,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 85.77777777777777) internal successors, (2316), 27 states have internal predecessors, (2316), 0 states have call successors, (0), 0 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 02:19:59,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:19:59,254 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:19:59,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 02:19:59,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 02:19:59,456 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:19:59,456 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:19:59,456 INFO L85 PathProgramCache]: Analyzing trace with hash 246720839, now seen corresponding path program 7 times [2023-09-01 02:19:59,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:19:59,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568308198] [2023-09-01 02:19:59,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:19:59,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:19:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:20:00,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:20:00,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:20:00,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568308198] [2023-09-01 02:20:00,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568308198] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:20:00,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147919579] [2023-09-01 02:20:00,038 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:20:00,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:20:00,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:20:00,039 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:20:00,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 02:20:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:20:00,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:20:00,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:20:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:20:00,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:20:00,735 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:20:00,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147919579] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:20:00,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:20:00,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 29 [2023-09-01 02:20:00,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004568924] [2023-09-01 02:20:00,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:20:00,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:20:00,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:20:00,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:20:00,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=721, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:20:00,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 227 [2023-09-01 02:20:00,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 519 places, 2568 transitions, 45186 flow. Second operand has 30 states, 30 states have (on average 84.5) internal successors, (2535), 30 states have internal predecessors, (2535), 0 states have call successors, (0), 0 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 02:20:00,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:20:00,937 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 227 [2023-09-01 02:20:00,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:20:38,619 INFO L130 PetriNetUnfolder]: 33654/56759 cut-off events. [2023-09-01 02:20:38,619 INFO L131 PetriNetUnfolder]: For 5729302/5729302 co-relation queries the response was YES. [2023-09-01 02:20:40,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 548978 conditions, 56759 events. 33654/56759 cut-off events. For 5729302/5729302 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 478429 event pairs, 1237 based on Foata normal form. 2592/59351 useless extension candidates. Maximal degree in co-relation 548797. Up to 14428 conditions per place. [2023-09-01 02:20:40,315 INFO L137 encePairwiseOnDemand]: 218/227 looper letters, 1300 selfloop transitions, 3278 changer transitions 1913/6491 dead transitions. [2023-09-01 02:20:40,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 608 places, 6491 transitions, 130318 flow [2023-09-01 02:20:40,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2023-09-01 02:20:40,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2023-09-01 02:20:40,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 15405 transitions. [2023-09-01 02:20:40,327 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38779106356198867 [2023-09-01 02:20:40,327 INFO L72 ComplementDD]: Start complementDD. Operand 175 states and 15405 transitions. [2023-09-01 02:20:40,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 175 states and 15405 transitions. [2023-09-01 02:20:40,331 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:20:40,331 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 175 states and 15405 transitions. [2023-09-01 02:20:40,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 176 states, 175 states have (on average 88.02857142857142) internal successors, (15405), 175 states have internal predecessors, (15405), 0 states have call successors, (0), 0 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 02:20:40,363 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 176 states, 176 states have (on average 227.0) internal successors, (39952), 176 states have internal predecessors, (39952), 0 states have call successors, (0), 0 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 02:20:40,367 INFO L81 ComplementDD]: Finished complementDD. Result has 176 states, 176 states have (on average 227.0) internal successors, (39952), 176 states have internal predecessors, (39952), 0 states have call successors, (0), 0 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 02:20:40,367 INFO L175 Difference]: Start difference. First operand has 519 places, 2568 transitions, 45186 flow. Second operand 175 states and 15405 transitions. [2023-09-01 02:20:40,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 608 places, 6491 transitions, 130318 flow [2023-09-01 02:22:13,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 6491 transitions, 114590 flow, removed 6210 selfloop flow, removed 83 redundant places. [2023-09-01 02:22:13,308 INFO L231 Difference]: Finished difference. Result has 633 places, 4160 transitions, 79305 flow [2023-09-01 02:22:13,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=42309, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2568, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1799, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=584, PETRI_DIFFERENCE_SUBTRAHEND_STATES=175, PETRI_FLOW=79305, PETRI_PLACES=633, PETRI_TRANSITIONS=4160} [2023-09-01 02:22:13,310 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 590 predicate places. [2023-09-01 02:22:13,310 INFO L495 AbstractCegarLoop]: Abstraction has has 633 places, 4160 transitions, 79305 flow [2023-09-01 02:22:13,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 84.5) internal successors, (2535), 30 states have internal predecessors, (2535), 0 states have call successors, (0), 0 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 02:22:13,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:22:13,311 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:22:13,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 02:22:13,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:22:13,516 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:22:13,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:22:13,516 INFO L85 PathProgramCache]: Analyzing trace with hash 605819233, now seen corresponding path program 8 times [2023-09-01 02:22:13,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:22:13,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51498817] [2023-09-01 02:22:13,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:22:13,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:22:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:22:13,950 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:22:13,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:22:13,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51498817] [2023-09-01 02:22:13,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51498817] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:22:13,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450532489] [2023-09-01 02:22:13,951 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:22:13,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:22:13,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:22:13,953 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:22:13,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 02:22:14,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:22:14,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:22:14,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:22:14,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:22:14,425 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:22:14,425 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:22:14,808 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:22:14,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450532489] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:22:14,808 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:22:14,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 28 [2023-09-01 02:22:14,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297031824] [2023-09-01 02:22:14,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:22:14,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-09-01 02:22:14,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:22:14,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-09-01 02:22:14,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=674, Unknown=0, NotChecked=0, Total=812 [2023-09-01 02:22:14,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 227 [2023-09-01 02:22:14,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 633 places, 4160 transitions, 79305 flow. Second operand has 29 states, 29 states have (on average 84.62068965517241) internal successors, (2454), 29 states have internal predecessors, (2454), 0 states have call successors, (0), 0 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 02:22:14,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:22:14,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 227 [2023-09-01 02:22:14,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:23:37,096 INFO L130 PetriNetUnfolder]: 53345/89756 cut-off events. [2023-09-01 02:23:37,096 INFO L131 PetriNetUnfolder]: For 24967420/24967420 co-relation queries the response was YES. [2023-09-01 02:23:40,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 946049 conditions, 89756 events. 53345/89756 cut-off events. For 24967420/24967420 co-relation queries the response was YES. Maximal size of possible extension queue 3184. Compared 804453 event pairs, 1806 based on Foata normal form. 5814/95570 useless extension candidates. Maximal degree in co-relation 945836. Up to 21312 conditions per place. [2023-09-01 02:23:40,867 INFO L137 encePairwiseOnDemand]: 216/227 looper letters, 1855 selfloop transitions, 5406 changer transitions 3664/10925 dead transitions. [2023-09-01 02:23:40,867 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 740 places, 10925 transitions, 233295 flow [2023-09-01 02:23:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 187 states. [2023-09-01 02:23:40,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2023-09-01 02:23:40,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 16352 transitions. [2023-09-01 02:23:40,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38521519941576954 [2023-09-01 02:23:40,876 INFO L72 ComplementDD]: Start complementDD. Operand 187 states and 16352 transitions. [2023-09-01 02:23:40,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 187 states and 16352 transitions. [2023-09-01 02:23:40,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:23:40,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 187 states and 16352 transitions. [2023-09-01 02:23:40,889 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 188 states, 187 states have (on average 87.44385026737967) internal successors, (16352), 187 states have internal predecessors, (16352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:23:40,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 188 states, 188 states have (on average 227.0) internal successors, (42676), 188 states have internal predecessors, (42676), 0 states have call successors, (0), 0 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 02:23:40,914 INFO L81 ComplementDD]: Finished complementDD. Result has 188 states, 188 states have (on average 227.0) internal successors, (42676), 188 states have internal predecessors, (42676), 0 states have call successors, (0), 0 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 02:23:40,915 INFO L175 Difference]: Start difference. First operand has 633 places, 4160 transitions, 79305 flow. Second operand 187 states and 16352 transitions. [2023-09-01 02:23:40,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 740 places, 10925 transitions, 233295 flow [2023-09-01 02:30:56,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 10925 transitions, 219589 flow, removed 6694 selfloop flow, removed 76 redundant places. [2023-09-01 02:30:56,273 INFO L231 Difference]: Finished difference. Result has 807 places, 6806 transitions, 141375 flow [2023-09-01 02:30:56,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=227, PETRI_DIFFERENCE_MINUEND_FLOW=75258, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2799, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1062, PETRI_DIFFERENCE_SUBTRAHEND_STATES=187, PETRI_FLOW=141375, PETRI_PLACES=807, PETRI_TRANSITIONS=6806} [2023-09-01 02:30:56,276 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 764 predicate places. [2023-09-01 02:30:56,276 INFO L495 AbstractCegarLoop]: Abstraction has has 807 places, 6806 transitions, 141375 flow [2023-09-01 02:30:56,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 84.62068965517241) internal successors, (2454), 29 states have internal predecessors, (2454), 0 states have call successors, (0), 0 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 02:30:56,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:30:56,277 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:30:56,284 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 02:30:56,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-09-01 02:30:56,481 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 02:30:56,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:30:56,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2096764027, now seen corresponding path program 9 times [2023-09-01 02:30:56,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:30:56,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072957542] [2023-09-01 02:30:56,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:30:56,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:30:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:30:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:56,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:30:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072957542] [2023-09-01 02:30:56,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072957542] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:30:56,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888607427] [2023-09-01 02:30:56,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:30:56,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:30:56,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:30:56,989 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:30:56,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 02:30:57,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-09-01 02:30:57,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:30:57,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2023-09-01 02:30:57,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:30:57,356 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:57,357 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:30:57,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:30:57,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888607427] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:30:57,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:30:57,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 29 [2023-09-01 02:30:57,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83253456] [2023-09-01 02:30:57,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:30:57,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-09-01 02:30:57,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:30:57,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-09-01 02:30:57,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=723, Unknown=0, NotChecked=0, Total=870 [2023-09-01 02:30:57,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 227 [2023-09-01 02:30:57,954 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 807 places, 6806 transitions, 141375 flow. Second operand has 30 states, 30 states have (on average 88.36666666666666) internal successors, (2651), 30 states have internal predecessors, (2651), 0 states have call successors, (0), 0 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 02:30:57,954 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:30:57,954 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 227 [2023-09-01 02:30:57,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15