./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/spaghetti.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 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:15:25,678 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:15:25,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:15:25,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:15:25,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:15:25,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:15:25,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:15:25,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:15:25,737 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:15:25,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:15:25,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:15:25,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:15:25,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:15:25,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:15:25,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:15:25,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:15:25,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:15:25,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:15:25,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:15:25,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:15:25,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:15:25,766 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:15:25,767 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:15:25,768 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:15:25,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:15:25,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:15:25,773 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:15:25,773 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:15:25,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:15:25,776 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:15:25,776 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:15:25,778 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:15:25,779 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:15:25,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:15:25,781 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:15:25,781 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:15:25,781 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:15:25,782 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:15:25,782 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:15:25,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:15:25,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:15:25,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:15:25,819 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:15:25,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:15:25,820 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:15:25,821 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:15:25,822 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:15:25,822 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:15:25,822 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:15:25,822 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:15:25,823 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:15:25,823 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:15:25,824 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:15:25,824 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:15:25,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:15:25,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:15:25,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:15:25,825 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:15:25,825 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:15:25,825 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:15:25,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:15:25,826 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:15:25,826 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:15:25,826 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:15:25,826 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:15:25,826 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:15:25,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:15:25,827 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:15:25,827 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:15:25,827 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:15:25,827 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:15:25,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:15:25,828 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:15:25,828 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:15:25,828 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:15:25,829 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:15:25,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e50ae1d6af13c623583d6a2f949e9597ecd4d402771d52399b9fc659c58a3d1 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:15:26,102 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:15:26,126 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:15:26,128 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:15:26,129 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:15:26,129 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:15:26,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/spaghetti.wvr.c [2023-08-30 01:15:27,219 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:15:27,427 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:15:27,428 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/spaghetti.wvr.c [2023-08-30 01:15:27,433 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e3e82f3/b55cb78995094aa5a99d63ea6fee5b2d/FLAGdd6520bba [2023-08-30 01:15:27,444 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77e3e82f3/b55cb78995094aa5a99d63ea6fee5b2d [2023-08-30 01:15:27,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:15:27,447 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:15:27,447 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:15:27,448 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:15:27,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:15:27,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@729178e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27, skipping insertion in model container [2023-08-30 01:15:27,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:15:27,476 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:15:27,619 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/spaghetti.wvr.c[3221,3234] [2023-08-30 01:15:27,623 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:15:27,632 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:15:27,653 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/spaghetti.wvr.c[3221,3234] [2023-08-30 01:15:27,655 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:15:27,662 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:15:27,662 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:15:27,668 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:15:27,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27 WrapperNode [2023-08-30 01:15:27,669 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:15:27,670 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:15:27,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:15:27,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:15:27,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,723 INFO L138 Inliner]: procedures = 23, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-08-30 01:15:27,724 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:15:27,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:15:27,725 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:15:27,725 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:15:27,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,747 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,767 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:15:27,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:15:27,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:15:27,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:15:27,779 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (1/1) ... [2023-08-30 01:15:27,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:15:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:15:27,814 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:15:27,827 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:15:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:15:27,853 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:15:27,853 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:15:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:15:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:15:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 01:15:27,854 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 01:15:27,854 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-30 01:15:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-30 01:15:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:15:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:15:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:15:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 01:15:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 01:15:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:15:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:15:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:15:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:15:27,857 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:15:28,003 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:15:28,005 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:15:28,259 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:15:28,275 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:15:28,276 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-30 01:15:28,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:15:28 BoogieIcfgContainer [2023-08-30 01:15:28,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:15:28,279 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:15:28,280 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:15:28,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:15:28,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:15:27" (1/3) ... [2023-08-30 01:15:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab59089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:15:28, skipping insertion in model container [2023-08-30 01:15:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:15:27" (2/3) ... [2023-08-30 01:15:28,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ab59089 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:15:28, skipping insertion in model container [2023-08-30 01:15:28,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:15:28" (3/3) ... [2023-08-30 01:15:28,285 INFO L112 eAbstractionObserver]: Analyzing ICFG spaghetti.wvr.c [2023-08-30 01:15:28,299 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:15:28,300 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-08-30 01:15:28,300 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:15:28,396 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-30 01:15:28,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 147 transitions, 326 flow [2023-08-30 01:15:28,543 INFO L130 PetriNetUnfolder]: 9/143 cut-off events. [2023-08-30 01:15:28,543 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:15:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 9/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/116 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-30 01:15:28,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 147 transitions, 326 flow [2023-08-30 01:15:28,560 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 139 transitions, 302 flow [2023-08-30 01:15:28,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:15:28,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 139 transitions, 302 flow [2023-08-30 01:15:28,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 139 transitions, 302 flow [2023-08-30 01:15:28,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 139 transitions, 302 flow [2023-08-30 01:15:28,636 INFO L130 PetriNetUnfolder]: 9/139 cut-off events. [2023-08-30 01:15:28,637 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 01:15:28,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156 conditions, 139 events. 9/139 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-30 01:15:28,643 INFO L119 LiptonReduction]: Number of co-enabled transitions 3846 [2023-08-30 01:15:32,516 INFO L134 LiptonReduction]: Checked pairs total: 6452 [2023-08-30 01:15:32,517 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-30 01:15:32,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:15:32,531 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;@3a41b849, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:15:32,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-30 01:15:32,532 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 01:15:32,533 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:32,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:32,533 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:15:32,533 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:32,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:32,539 INFO L85 PathProgramCache]: Analyzing trace with hash 554, now seen corresponding path program 1 times [2023-08-30 01:15:32,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:32,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813219626] [2023-08-30 01:15:32,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:32,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:32,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:32,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:32,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:32,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813219626] [2023-08-30 01:15:32,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813219626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:32,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:32,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:15:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898547962] [2023-08-30 01:15:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:32,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:15:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:32,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:15:32,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:15:32,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 281 [2023-08-30 01:15:32,656 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 120 flow. Second operand has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:32,656 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:32,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 281 [2023-08-30 01:15:32,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:32,923 INFO L130 PetriNetUnfolder]: 1371/2023 cut-off events. [2023-08-30 01:15:32,924 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2023-08-30 01:15:32,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4116 conditions, 2023 events. 1371/2023 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 8371 event pairs, 1328 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 3204. Up to 1968 conditions per place. [2023-08-30 01:15:32,945 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 39 selfloop transitions, 0 changer transitions 0/45 dead transitions. [2023-08-30 01:15:32,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 45 transitions, 192 flow [2023-08-30 01:15:32,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:15:32,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:15:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 304 transitions. [2023-08-30 01:15:32,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5409252669039146 [2023-08-30 01:15:32,966 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 304 transitions. [2023-08-30 01:15:32,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 304 transitions. [2023-08-30 01:15:32,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:32,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 304 transitions. [2023-08-30 01:15:32,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:32,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:32,982 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 281.0) internal successors, (843), 3 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:32,983 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 120 flow. Second operand 2 states and 304 transitions. [2023-08-30 01:15:32,984 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 45 transitions, 192 flow [2023-08-30 01:15:32,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 176 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-30 01:15:32,993 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 98 flow [2023-08-30 01:15:33,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=98, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-30 01:15:33,029 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-08-30 01:15:33,030 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 98 flow [2023-08-30 01:15:33,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,030 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:33,030 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:15:33,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:15:33,031 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:33,031 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 543789, now seen corresponding path program 1 times [2023-08-30 01:15:33,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:33,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334829167] [2023-08-30 01:15:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:33,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:33,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:33,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334829167] [2023-08-30 01:15:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334829167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:33,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:33,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585259991] [2023-08-30 01:15:33,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:33,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:33,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:33,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:33,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:33,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 281 [2023-08-30 01:15:33,408 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,408 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:33,408 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 281 [2023-08-30 01:15:33,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:33,668 INFO L130 PetriNetUnfolder]: 1314/1935 cut-off events. [2023-08-30 01:15:33,668 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:33,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3859 conditions, 1935 events. 1314/1935 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7920 event pairs, 1272 based on Foata normal form. 0/971 useless extension candidates. Maximal degree in co-relation 3856. Up to 1881 conditions per place. [2023-08-30 01:15:33,682 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 36 selfloop transitions, 1 changer transitions 0/43 dead transitions. [2023-08-30 01:15:33,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 43 transitions, 168 flow [2023-08-30 01:15:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:33,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-30 01:15:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47330960854092524 [2023-08-30 01:15:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-30 01:15:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-30 01:15:33,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:33,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-30 01:15:33,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,692 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,692 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 98 flow. Second operand 3 states and 399 transitions. [2023-08-30 01:15:33,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 43 transitions, 168 flow [2023-08-30 01:15:33,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 168 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:15:33,694 INFO L231 Difference]: Finished difference. Result has 47 places, 43 transitions, 96 flow [2023-08-30 01:15:33,694 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=47, PETRI_TRANSITIONS=43} [2023-08-30 01:15:33,695 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-08-30 01:15:33,695 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 43 transitions, 96 flow [2023-08-30 01:15:33,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:33,696 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:15:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:15:33,696 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:33,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:33,699 INFO L85 PathProgramCache]: Analyzing trace with hash 543791, now seen corresponding path program 1 times [2023-08-30 01:15:33,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:33,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036949865] [2023-08-30 01:15:33,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:33,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:33,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:33,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:33,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036949865] [2023-08-30 01:15:33,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036949865] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:33,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:33,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:33,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750175615] [2023-08-30 01:15:33,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:33,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:33,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:33,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:33,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:33,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 281 [2023-08-30 01:15:33,891 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 43 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:33,892 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:33,892 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 281 [2023-08-30 01:15:33,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:34,033 INFO L130 PetriNetUnfolder]: 1257/1847 cut-off events. [2023-08-30 01:15:34,034 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:34,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3687 conditions, 1847 events. 1257/1847 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7506 event pairs, 1216 based on Foata normal form. 0/941 useless extension candidates. Maximal degree in co-relation 3683. Up to 1795 conditions per place. [2023-08-30 01:15:34,063 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 34 selfloop transitions, 1 changer transitions 0/41 dead transitions. [2023-08-30 01:15:34,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 41 transitions, 162 flow [2023-08-30 01:15:34,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:34,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:34,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-30 01:15:34,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49228944246737844 [2023-08-30 01:15:34,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-30 01:15:34,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-30 01:15:34,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:34,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-30 01:15:34,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,070 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,070 INFO L175 Difference]: Start difference. First operand has 47 places, 43 transitions, 96 flow. Second operand 3 states and 415 transitions. [2023-08-30 01:15:34,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 41 transitions, 162 flow [2023-08-30 01:15:34,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 41 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:34,072 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 93 flow [2023-08-30 01:15:34,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-30 01:15:34,073 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -11 predicate places. [2023-08-30 01:15:34,073 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 93 flow [2023-08-30 01:15:34,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:34,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:15:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:15:34,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:34,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash 522594442, now seen corresponding path program 1 times [2023-08-30 01:15:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:34,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219905469] [2023-08-30 01:15:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:34,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:34,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:34,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:34,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219905469] [2023-08-30 01:15:34,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219905469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:34,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:34,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:34,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153898081] [2023-08-30 01:15:34,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:34,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 281 [2023-08-30 01:15:34,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,181 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:34,181 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 281 [2023-08-30 01:15:34,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:34,326 INFO L130 PetriNetUnfolder]: 1233/1805 cut-off events. [2023-08-30 01:15:34,327 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:34,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 1805 events. 1233/1805 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7298 event pairs, 1192 based on Foata normal form. 0/929 useless extension candidates. Maximal degree in co-relation 3600. Up to 1753 conditions per place. [2023-08-30 01:15:34,340 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 32 selfloop transitions, 1 changer transitions 0/39 dead transitions. [2023-08-30 01:15:34,340 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 155 flow [2023-08-30 01:15:34,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:34,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-30 01:15:34,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46856465005931197 [2023-08-30 01:15:34,350 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-30 01:15:34,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-30 01:15:34,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:34,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-30 01:15:34,352 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,354 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,354 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 93 flow. Second operand 3 states and 395 transitions. [2023-08-30 01:15:34,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 155 flow [2023-08-30 01:15:34,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 39 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:34,356 INFO L231 Difference]: Finished difference. Result has 45 places, 39 transitions, 90 flow [2023-08-30 01:15:34,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=39} [2023-08-30 01:15:34,358 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -12 predicate places. [2023-08-30 01:15:34,358 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 39 transitions, 90 flow [2023-08-30 01:15:34,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:34,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:15:34,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:15:34,359 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:34,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:34,359 INFO L85 PathProgramCache]: Analyzing trace with hash 522594441, now seen corresponding path program 1 times [2023-08-30 01:15:34,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:34,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570298791] [2023-08-30 01:15:34,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:34,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:34,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570298791] [2023-08-30 01:15:34,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570298791] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:34,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:34,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:34,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344935993] [2023-08-30 01:15:34,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:34,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:34,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:34,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:34,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:34,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 281 [2023-08-30 01:15:34,522 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,522 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:34,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 281 [2023-08-30 01:15:34,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:34,650 INFO L130 PetriNetUnfolder]: 1209/1763 cut-off events. [2023-08-30 01:15:34,651 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:34,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3521 conditions, 1763 events. 1209/1763 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7121 event pairs, 1168 based on Foata normal form. 0/917 useless extension candidates. Maximal degree in co-relation 3517. Up to 1711 conditions per place. [2023-08-30 01:15:34,662 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 30 selfloop transitions, 1 changer transitions 0/37 dead transitions. [2023-08-30 01:15:34,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 37 transitions, 148 flow [2023-08-30 01:15:34,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:34,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:34,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 411 transitions. [2023-08-30 01:15:34,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875444839857651 [2023-08-30 01:15:34,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 411 transitions. [2023-08-30 01:15:34,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 411 transitions. [2023-08-30 01:15:34,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:34,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 411 transitions. [2023-08-30 01:15:34,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,668 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,668 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 90 flow. Second operand 3 states and 411 transitions. [2023-08-30 01:15:34,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 37 transitions, 148 flow [2023-08-30 01:15:34,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 37 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:34,670 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 87 flow [2023-08-30 01:15:34,670 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-08-30 01:15:34,671 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -13 predicate places. [2023-08-30 01:15:34,671 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 87 flow [2023-08-30 01:15:34,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:34,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:34,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:15:34,672 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:34,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:34,672 INFO L85 PathProgramCache]: Analyzing trace with hash -297901474, now seen corresponding path program 1 times [2023-08-30 01:15:34,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:34,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133050998] [2023-08-30 01:15:34,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:34,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:34,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:34,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:34,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:34,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133050998] [2023-08-30 01:15:34,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133050998] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:34,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:34,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070032389] [2023-08-30 01:15:34,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:34,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:34,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:34,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:34,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:34,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 281 [2023-08-30 01:15:34,754 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,754 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:34,754 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 281 [2023-08-30 01:15:34,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:34,885 INFO L130 PetriNetUnfolder]: 1153/1677 cut-off events. [2023-08-30 01:15:34,886 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:34,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 1677 events. 1153/1677 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6718 event pairs, 1112 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 3346. Up to 1625 conditions per place. [2023-08-30 01:15:34,900 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 28 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-30 01:15:34,900 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 35 transitions, 141 flow [2023-08-30 01:15:34,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:34,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:34,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions. [2023-08-30 01:15:34,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4638196915776987 [2023-08-30 01:15:34,903 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions. [2023-08-30 01:15:34,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions. [2023-08-30 01:15:34,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:34,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions. [2023-08-30 01:15:34,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,907 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 87 flow. Second operand 3 states and 391 transitions. [2023-08-30 01:15:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 35 transitions, 141 flow [2023-08-30 01:15:34,908 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:34,908 INFO L231 Difference]: Finished difference. Result has 43 places, 35 transitions, 84 flow [2023-08-30 01:15:34,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=43, PETRI_TRANSITIONS=35} [2023-08-30 01:15:34,909 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -14 predicate places. [2023-08-30 01:15:34,909 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 35 transitions, 84 flow [2023-08-30 01:15:34,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:34,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:34,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:34,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:15:34,911 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:34,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:34,911 INFO L85 PathProgramCache]: Analyzing trace with hash -297901473, now seen corresponding path program 1 times [2023-08-30 01:15:34,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:34,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801655465] [2023-08-30 01:15:34,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:34,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:34,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:34,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:34,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:34,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801655465] [2023-08-30 01:15:34,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801655465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:34,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:34,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:15:34,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774578132] [2023-08-30 01:15:34,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:34,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:15:34,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:34,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:15:34,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:15:35,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 281 [2023-08-30 01:15:35,018 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,018 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:35,018 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 281 [2023-08-30 01:15:35,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:35,146 INFO L130 PetriNetUnfolder]: 1097/1591 cut-off events. [2023-08-30 01:15:35,146 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:35,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3179 conditions, 1591 events. 1097/1591 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 6295 event pairs, 1056 based on Foata normal form. 0/861 useless extension candidates. Maximal degree in co-relation 3175. Up to 1539 conditions per place. [2023-08-30 01:15:35,178 INFO L137 encePairwiseOnDemand]: 278/281 looper letters, 26 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-30 01:15:35,179 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 134 flow [2023-08-30 01:15:35,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:35,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:35,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-30 01:15:35,181 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48279952550415184 [2023-08-30 01:15:35,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-30 01:15:35,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-30 01:15:35,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:35,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-30 01:15:35,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,185 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,185 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,186 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 84 flow. Second operand 3 states and 407 transitions. [2023-08-30 01:15:35,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 134 flow [2023-08-30 01:15:35,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:35,188 INFO L231 Difference]: Finished difference. Result has 42 places, 33 transitions, 81 flow [2023-08-30 01:15:35,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=42, PETRI_TRANSITIONS=33} [2023-08-30 01:15:35,189 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2023-08-30 01:15:35,189 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 33 transitions, 81 flow [2023-08-30 01:15:35,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:35,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:35,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:15:35,190 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:35,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:35,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1479503636, now seen corresponding path program 1 times [2023-08-30 01:15:35,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:35,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994110263] [2023-08-30 01:15:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:35,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:35,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:35,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994110263] [2023-08-30 01:15:35,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994110263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:35,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:35,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:15:35,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569975627] [2023-08-30 01:15:35,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:35,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 01:15:35,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:35,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 01:15:35,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 01:15:35,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 281 [2023-08-30 01:15:35,595 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 33 transitions, 81 flow. Second operand has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,595 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:35,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 281 [2023-08-30 01:15:35,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:35,726 INFO L130 PetriNetUnfolder]: 881/1294 cut-off events. [2023-08-30 01:15:35,726 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:35,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2586 conditions, 1294 events. 881/1294 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 4888 event pairs, 840 based on Foata normal form. 0/753 useless extension candidates. Maximal degree in co-relation 2582. Up to 1242 conditions per place. [2023-08-30 01:15:35,733 INFO L137 encePairwiseOnDemand]: 279/281 looper letters, 25 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-30 01:15:35,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 32 transitions, 131 flow [2023-08-30 01:15:35,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 378 transitions. [2023-08-30 01:15:35,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4483985765124555 [2023-08-30 01:15:35,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 378 transitions. [2023-08-30 01:15:35,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 378 transitions. [2023-08-30 01:15:35,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:35,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 378 transitions. [2023-08-30 01:15:35,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,739 INFO L175 Difference]: Start difference. First operand has 42 places, 33 transitions, 81 flow. Second operand 3 states and 378 transitions. [2023-08-30 01:15:35,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 32 transitions, 131 flow [2023-08-30 01:15:35,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:35,740 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 80 flow [2023-08-30 01:15:35,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-30 01:15:35,741 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2023-08-30 01:15:35,741 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 80 flow [2023-08-30 01:15:35,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:35,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:35,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 01:15:35,742 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:35,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1479503635, now seen corresponding path program 1 times [2023-08-30 01:15:35,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:35,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931997799] [2023-08-30 01:15:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:35,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:35,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:35,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:35,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931997799] [2023-08-30 01:15:35,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931997799] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:35,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:35,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 01:15:35,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712734877] [2023-08-30 01:15:35,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:35,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 01:15:35,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:35,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 01:15:35,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-30 01:15:35,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 281 [2023-08-30 01:15:35,990 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 80 flow. Second operand has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:35,990 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:35,990 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 281 [2023-08-30 01:15:35,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:36,074 INFO L130 PetriNetUnfolder]: 665/997 cut-off events. [2023-08-30 01:15:36,074 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:15:36,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1993 conditions, 997 events. 665/997 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3562 event pairs, 624 based on Foata normal form. 0/645 useless extension candidates. Maximal degree in co-relation 1989. Up to 945 conditions per place. [2023-08-30 01:15:36,080 INFO L137 encePairwiseOnDemand]: 279/281 looper letters, 24 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-30 01:15:36,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 31 transitions, 128 flow [2023-08-30 01:15:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:15:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:15:36,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-30 01:15:36,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151838671411625 [2023-08-30 01:15:36,083 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-30 01:15:36,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-30 01:15:36,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:36,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-30 01:15:36,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,086 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,086 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 80 flow. Second operand 3 states and 350 transitions. [2023-08-30 01:15:36,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 31 transitions, 128 flow [2023-08-30 01:15:36,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 31 transitions, 127 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:36,087 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 79 flow [2023-08-30 01:15:36,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-30 01:15:36,088 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -15 predicate places. [2023-08-30 01:15:36,088 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 79 flow [2023-08-30 01:15:36,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 109.5) internal successors, (657), 6 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:36,089 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:36,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 01:15:36,089 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:36,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:36,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1461252254, now seen corresponding path program 1 times [2023-08-30 01:15:36,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:36,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862917540] [2023-08-30 01:15:36,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:36,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:36,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:36,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:36,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862917540] [2023-08-30 01:15:36,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862917540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:36,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:36,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:15:36,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716541262] [2023-08-30 01:15:36,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:36,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:15:36,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:36,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:15:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:15:36,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-08-30 01:15:36,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 79 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:36,335 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-08-30 01:15:36,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:36,533 INFO L130 PetriNetUnfolder]: 1483/2212 cut-off events. [2023-08-30 01:15:36,534 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-30 01:15:36,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4462 conditions, 2212 events. 1483/2212 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 10426 event pairs, 559 based on Foata normal form. 1/1550 useless extension candidates. Maximal degree in co-relation 4458. Up to 911 conditions per place. [2023-08-30 01:15:36,552 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 53 selfloop transitions, 10 changer transitions 1/68 dead transitions. [2023-08-30 01:15:36,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 68 transitions, 289 flow [2023-08-30 01:15:36,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 01:15:36,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 01:15:36,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 549 transitions. [2023-08-30 01:15:36,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884341637010676 [2023-08-30 01:15:36,554 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 549 transitions. [2023-08-30 01:15:36,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 549 transitions. [2023-08-30 01:15:36,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:36,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 549 transitions. [2023-08-30 01:15:36,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.25) internal successors, (549), 4 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,558 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,558 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 79 flow. Second operand 4 states and 549 transitions. [2023-08-30 01:15:36,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 68 transitions, 289 flow [2023-08-30 01:15:36,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 68 transitions, 288 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:15:36,560 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 156 flow [2023-08-30 01:15:36,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-30 01:15:36,562 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -10 predicate places. [2023-08-30 01:15:36,562 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 156 flow [2023-08-30 01:15:36,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:15:36,563 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:36,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:15:36,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-08-30 01:15:36,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:15:36,564 INFO L85 PathProgramCache]: Analyzing trace with hash -433071134, now seen corresponding path program 2 times [2023-08-30 01:15:36,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:15:36,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651361264] [2023-08-30 01:15:36,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:15:36,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:15:36,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:15:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:15:36,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:15:36,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651361264] [2023-08-30 01:15:36,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651361264] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:15:36,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:15:36,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:15:36,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680960836] [2023-08-30 01:15:36,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:15:36,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:15:36,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:15:36,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:15:36,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:15:36,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 281 [2023-08-30 01:15:36,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 156 flow. Second operand has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:36,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:15:36,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 281 [2023-08-30 01:15:36,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:15:37,076 INFO L130 PetriNetUnfolder]: 1711/2588 cut-off events. [2023-08-30 01:15:37,077 INFO L131 PetriNetUnfolder]: For 1909/1933 co-relation queries the response was YES. [2023-08-30 01:15:37,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7230 conditions, 2588 events. 1711/2588 cut-off events. For 1909/1933 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 12551 event pairs, 657 based on Foata normal form. 1/2577 useless extension candidates. Maximal degree in co-relation 7224. Up to 1321 conditions per place. [2023-08-30 01:15:37,089 INFO L137 encePairwiseOnDemand]: 272/281 looper letters, 0 selfloop transitions, 0 changer transitions 85/85 dead transitions. [2023-08-30 01:15:37,090 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 85 transitions, 480 flow [2023-08-30 01:15:37,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 01:15:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 01:15:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-30 01:15:37,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875444839857651 [2023-08-30 01:15:37,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-30 01:15:37,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-30 01:15:37,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:15:37,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-30 01:15:37,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:37,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:37,098 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:37,098 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 156 flow. Second operand 4 states and 548 transitions. [2023-08-30 01:15:37,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 85 transitions, 480 flow [2023-08-30 01:15:37,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 85 transitions, 480 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:15:37,101 INFO L231 Difference]: Finished difference. Result has 49 places, 0 transitions, 0 flow [2023-08-30 01:15:37,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=49, PETRI_TRANSITIONS=0} [2023-08-30 01:15:37,102 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -8 predicate places. [2023-08-30 01:15:37,102 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 0 transitions, 0 flow [2023-08-30 01:15:37,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.25) internal successors, (505), 4 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:15:37,106 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 22 remaining) [2023-08-30 01:15:37,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 22 remaining) [2023-08-30 01:15:37,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 22 remaining) [2023-08-30 01:15:37,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 22 remaining) [2023-08-30 01:15:37,107 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 22 remaining) [2023-08-30 01:15:37,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 22 remaining) [2023-08-30 01:15:37,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 22 remaining) [2023-08-30 01:15:37,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 22 remaining) [2023-08-30 01:15:37,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 22 remaining) [2023-08-30 01:15:37,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 22 remaining) [2023-08-30 01:15:37,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 22 remaining) [2023-08-30 01:15:37,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 22 remaining) [2023-08-30 01:15:37,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 22 remaining) [2023-08-30 01:15:37,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 22 remaining) [2023-08-30 01:15:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 22 remaining) [2023-08-30 01:15:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 22 remaining) [2023-08-30 01:15:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK (5 of 22 remaining) [2023-08-30 01:15:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK (4 of 22 remaining) [2023-08-30 01:15:37,110 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 22 remaining) [2023-08-30 01:15:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 22 remaining) [2023-08-30 01:15:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 22 remaining) [2023-08-30 01:15:37,111 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 22 remaining) [2023-08-30 01:15:37,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:15:37,112 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:15:37,115 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:15:37,115 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:15:37,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:15:37 BasicIcfg [2023-08-30 01:15:37,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:15:37,119 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:15:37,119 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:15:37,119 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:15:37,120 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:15:28" (3/4) ... [2023-08-30 01:15:37,122 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 01:15:37,127 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 01:15:37,128 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 01:15:37,128 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 01:15:37,128 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2023-08-30 01:15:37,132 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2023-08-30 01:15:37,132 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 01:15:37,132 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 01:15:37,132 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 01:15:37,160 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 01:15:37,160 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:15:37,161 INFO L158 Benchmark]: Toolchain (without parser) took 9714.25ms. Allocated memory was 77.6MB in the beginning and 367.0MB in the end (delta: 289.4MB). Free memory was 57.7MB in the beginning and 187.3MB in the end (delta: -129.6MB). Peak memory consumption was 159.4MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,161 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:15:37,162 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.02ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 46.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,162 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.57ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,162 INFO L158 Benchmark]: Boogie Preprocessor took 51.26ms. Allocated memory is still 77.6MB. Free memory was 44.5MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:15:37,162 INFO L158 Benchmark]: RCFGBuilder took 501.23ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 44.7MB in the end (delta: -1.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,163 INFO L158 Benchmark]: TraceAbstraction took 8839.08ms. Allocated memory was 77.6MB in the beginning and 367.0MB in the end (delta: 289.4MB). Free memory was 44.0MB in the beginning and 190.5MB in the end (delta: -146.5MB). Peak memory consumption was 142.9MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,163 INFO L158 Benchmark]: Witness Printer took 41.68ms. Allocated memory is still 367.0MB. Free memory was 190.5MB in the beginning and 187.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:15:37,164 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 60.8MB. Free memory is still 38.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.02ms. Allocated memory is still 77.6MB. Free memory was 57.5MB in the beginning and 46.1MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.57ms. Allocated memory is still 77.6MB. Free memory was 46.1MB in the beginning and 44.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.26ms. Allocated memory is still 77.6MB. Free memory was 44.5MB in the beginning and 42.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 501.23ms. Allocated memory is still 77.6MB. Free memory was 42.9MB in the beginning and 44.7MB in the end (delta: -1.8MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 8839.08ms. Allocated memory was 77.6MB in the beginning and 367.0MB in the end (delta: 289.4MB). Free memory was 44.0MB in the beginning and 190.5MB in the end (delta: -146.5MB). Peak memory consumption was 142.9MB. Max. memory is 16.1GB. * Witness Printer took 41.68ms. Allocated memory is still 367.0MB. Free memory was 190.5MB in the beginning and 187.3MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 143 PlacesBefore, 57 PlacesAfterwards, 139 TransitionsBefore, 48 TransitionsAfterwards, 3846 CoEnabledTransitionPairs, 6 FixpointIterations, 51 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 14 ConcurrentYvCompositions, 5 ChoiceCompositions, 134 TotalNumberOfCompositions, 6452 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4730, independent: 4632, independent conditional: 0, independent unconditional: 4632, dependent: 98, dependent conditional: 0, dependent unconditional: 98, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2126, independent: 2090, independent conditional: 0, independent unconditional: 2090, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4730, independent: 2542, independent conditional: 0, independent unconditional: 2542, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 2126, unknown conditional: 0, unknown unconditional: 2126] , Statistics on independence cache: Total cache size (in pairs): 199, Positive cache size: 187, Positive conditional cache size: 0, Positive unconditional cache size: 187, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 127]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 111]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 185 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1084 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 598 mSDsluCounter, 129 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 134 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1248 IncrementalHoareTripleChecker+Invalid, 1382 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 134 mSolverCounterUnsat, 91 mSDtfsCounter, 1248 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=156occurred in iteration=10, InterpolantAutomatonStates: 34, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 01:15:37,188 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE