./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i --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/goblint-regression/13-privatized_27-multiple-protecting2_true.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 21:34:50,731 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 21:34:50,733 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 21:34:50,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 21:34:50,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 21:34:50,761 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 21:34:50,763 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 21:34:50,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 21:34:50,770 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 21:34:50,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 21:34:50,775 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 21:34:50,776 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 21:34:50,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 21:34:50,779 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 21:34:50,781 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 21:34:50,783 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 21:34:50,784 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 21:34:50,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 21:34:50,787 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 21:34:50,791 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 21:34:50,801 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 21:34:50,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 21:34:50,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 21:34:50,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 21:34:50,813 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 21:34:50,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 21:34:50,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 21:34:50,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 21:34:50,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 21:34:50,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 21:34:50,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 21:34:50,821 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 21:34:50,822 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 21:34:50,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 21:34:50,825 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 21:34:50,825 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 21:34:50,825 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 21:34:50,826 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 21:34:50,826 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 21:34:50,826 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 21:34:50,827 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 21:34:50,829 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-29 21:34:50,869 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 21:34:50,870 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 21:34:50,871 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 21:34:50,871 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 21:34:50,872 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 21:34:50,872 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 21:34:50,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 21:34:50,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 21:34:50,873 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 21:34:50,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 21:34:50,874 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 21:34:50,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 21:34:50,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 21:34:50,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 21:34:50,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 21:34:50,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-29 21:34:50,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-29 21:34:50,875 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-29 21:34:50,875 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 21:34:50,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-29 21:34:50,876 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 21:34:50,876 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 21:34:50,876 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 21:34:50,876 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 21:34:50,876 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 21:34:50,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:34:50,877 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 21:34:50,877 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 21:34:50,877 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 21:34:50,877 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 21:34:50,878 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 21:34:50,878 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 21:34:50,878 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 21:34:50,878 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 21:34:50,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d0b9c4fc8b0005fb250fdf1ff8e25835b95e676b1936e4f5fe1cf72245ee5f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 21:34:51,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 21:34:51,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 21:34:51,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 21:34:51,191 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 21:34:51,191 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 21:34:51,192 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-29 21:34:52,272 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 21:34:52,518 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 21:34:52,519 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-29 21:34:52,532 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c0bec85/3c8b236a1041428281d8f7170d0fc6f8/FLAG266968820 [2023-08-29 21:34:52,545 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98c0bec85/3c8b236a1041428281d8f7170d0fc6f8 [2023-08-29 21:34:52,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 21:34:52,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 21:34:52,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 21:34:52,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 21:34:52,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 21:34:52,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:52,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bb99046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52, skipping insertion in model container [2023-08-29 21:34:52,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:52,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 21:34:52,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 21:34:52,716 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-08-29 21:34:52,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:34:52,872 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 21:34:52,885 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i[1097,1110] [2023-08-29 21:34:52,936 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 21:34:52,995 INFO L208 MainTranslator]: Completed translation [2023-08-29 21:34:52,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52 WrapperNode [2023-08-29 21:34:52,996 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 21:34:52,997 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 21:34:52,997 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 21:34:52,998 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 21:34:53,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,047 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2023-08-29 21:34:53,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 21:34:53,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 21:34:53,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 21:34:53,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 21:34:53,058 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,102 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,104 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,105 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 21:34:53,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 21:34:53,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 21:34:53,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 21:34:53,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (1/1) ... [2023-08-29 21:34:53,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 21:34:53,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 21:34:53,149 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 21:34:53,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 21:34:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 21:34:53,185 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 21:34:53,185 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 21:34:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 21:34:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 21:34:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 21:34:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 21:34:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 21:34:53,188 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 21:34:53,372 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 21:34:53,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 21:34:53,690 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 21:34:53,697 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 21:34:53,699 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-29 21:34:53,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:53 BoogieIcfgContainer [2023-08-29 21:34:53,701 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 21:34:53,704 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 21:34:53,704 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 21:34:53,706 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 21:34:53,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 09:34:52" (1/3) ... [2023-08-29 21:34:53,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3960edb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:53, skipping insertion in model container [2023-08-29 21:34:53,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 09:34:52" (2/3) ... [2023-08-29 21:34:53,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3960edb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 09:34:53, skipping insertion in model container [2023-08-29 21:34:53,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:53" (3/3) ... [2023-08-29 21:34:53,709 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-08-29 21:34:53,723 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 21:34:53,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-29 21:34:53,724 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 21:34:53,817 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 21:34:53,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 159 transitions, 334 flow [2023-08-29 21:34:53,945 INFO L130 PetriNetUnfolder]: 4/157 cut-off events. [2023-08-29 21:34:53,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:34:53,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 157 events. 4/157 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 162 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-29 21:34:53,951 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 159 transitions, 334 flow [2023-08-29 21:34:53,959 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 153 transitions, 318 flow [2023-08-29 21:34:53,964 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 21:34:53,982 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 153 transitions, 318 flow [2023-08-29 21:34:53,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 153 transitions, 318 flow [2023-08-29 21:34:53,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 153 transitions, 318 flow [2023-08-29 21:34:54,022 INFO L130 PetriNetUnfolder]: 4/153 cut-off events. [2023-08-29 21:34:54,022 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 21:34:54,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 153 events. 4/153 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 161 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-29 21:34:54,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 5076 [2023-08-29 21:34:59,002 INFO L134 LiptonReduction]: Checked pairs total: 17127 [2023-08-29 21:34:59,002 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-08-29 21:34:59,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 21:34:59,019 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;@7cd1a86d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 21:34:59,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-08-29 21:34:59,020 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 21:34:59,020 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:34:59,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,021 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 21:34:59,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:34:59,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,026 INFO L85 PathProgramCache]: Analyzing trace with hash 534, now seen corresponding path program 1 times [2023-08-29 21:34:59,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354881366] [2023-08-29 21:34:59,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:34:59,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:34:59,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:34:59,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354881366] [2023-08-29 21:34:59,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354881366] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:34:59,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:34:59,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 21:34:59,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102148071] [2023-08-29 21:34:59,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:34:59,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 21:34:59,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:34:59,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 21:34:59,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 21:34:59,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 287 [2023-08-29 21:34:59,161 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 58 transitions, 128 flow. Second operand has 2 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:34:59,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 287 [2023-08-29 21:34:59,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:34:59,729 INFO L130 PetriNetUnfolder]: 3037/4932 cut-off events. [2023-08-29 21:34:59,730 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-29 21:34:59,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 4932 events. 3037/4932 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 25553 event pairs, 3037 based on Foata normal form. 144/4457 useless extension candidates. Maximal degree in co-relation 9640. Up to 4837 conditions per place. [2023-08-29 21:34:59,761 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 48 selfloop transitions, 0 changer transitions 2/52 dead transitions. [2023-08-29 21:34:59,761 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 216 flow [2023-08-29 21:34:59,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 21:34:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 21:34:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 349 transitions. [2023-08-29 21:34:59,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.60801393728223 [2023-08-29 21:34:59,779 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 349 transitions. [2023-08-29 21:34:59,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 349 transitions. [2023-08-29 21:34:59,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:34:59,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 349 transitions. [2023-08-29 21:34:59,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 174.5) internal successors, (349), 2 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,795 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 287.0) internal successors, (861), 3 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,797 INFO L175 Difference]: Start difference. First operand has 62 places, 58 transitions, 128 flow. Second operand 2 states and 349 transitions. [2023-08-29 21:34:59,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 216 flow [2023-08-29 21:34:59,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 52 transitions, 208 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-29 21:34:59,805 INFO L231 Difference]: Finished difference. Result has 56 places, 50 transitions, 104 flow [2023-08-29 21:34:59,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=56, PETRI_TRANSITIONS=50} [2023-08-29 21:34:59,810 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-08-29 21:34:59,811 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 50 transitions, 104 flow [2023-08-29 21:34:59,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 147.5) internal successors, (295), 2 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:34:59,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:34:59,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:34:59,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 21:34:59,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:34:59,819 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:34:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash 527205, now seen corresponding path program 1 times [2023-08-29 21:34:59,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:34:59,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535276733] [2023-08-29 21:34:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:34:59,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:34:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:00,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:00,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:00,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535276733] [2023-08-29 21:35:00,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535276733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:00,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:00,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:00,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296001562] [2023-08-29 21:35:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:00,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:00,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:00,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 287 [2023-08-29 21:35:00,084 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 50 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,084 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:00,085 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 287 [2023-08-29 21:35:00,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:00,457 INFO L130 PetriNetUnfolder]: 2768/4501 cut-off events. [2023-08-29 21:35:00,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:00,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8919 conditions, 4501 events. 2768/4501 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22975 event pairs, 2768 based on Foata normal form. 0/4043 useless extension candidates. Maximal degree in co-relation 8916. Up to 4405 conditions per place. [2023-08-29 21:35:00,478 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 44 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-29 21:35:00,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 192 flow [2023-08-29 21:35:00,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:00,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:00,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 462 transitions. [2023-08-29 21:35:00,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5365853658536586 [2023-08-29 21:35:00,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 462 transitions. [2023-08-29 21:35:00,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 462 transitions. [2023-08-29 21:35:00,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:00,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 462 transitions. [2023-08-29 21:35:00,483 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.0) internal successors, (462), 3 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,485 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,486 INFO L175 Difference]: Start difference. First operand has 56 places, 50 transitions, 104 flow. Second operand 3 states and 462 transitions. [2023-08-29 21:35:00,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 192 flow [2023-08-29 21:35:00,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 192 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 21:35:00,487 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-08-29 21:35:00,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-29 21:35:00,488 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-29 21:35:00,488 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-08-29 21:35:00,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:00,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 21:35:00,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 21:35:00,489 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:00,490 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash 527206, now seen corresponding path program 1 times [2023-08-29 21:35:00,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:00,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950751588] [2023-08-29 21:35:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:00,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:00,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:00,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:00,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950751588] [2023-08-29 21:35:00,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950751588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:00,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:00,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:00,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150139519] [2023-08-29 21:35:00,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:00,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:00,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:00,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:00,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:00,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-29 21:35:00,647 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:00,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:00,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-29 21:35:00,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:01,019 INFO L130 PetriNetUnfolder]: 2753/4468 cut-off events. [2023-08-29 21:35:01,019 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:01,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8857 conditions, 4468 events. 2753/4468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 22817 event pairs, 2753 based on Foata normal form. 0/4027 useless extension candidates. Maximal degree in co-relation 8853. Up to 4373 conditions per place. [2023-08-29 21:35:01,045 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 42 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-29 21:35:01,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 188 flow [2023-08-29 21:35:01,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:01,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:01,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-08-29 21:35:01,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5481997677119629 [2023-08-29 21:35:01,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-08-29 21:35:01,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-08-29 21:35:01,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:01,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-08-29 21:35:01,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,052 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 472 transitions. [2023-08-29 21:35:01,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 188 flow [2023-08-29 21:35:01,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:01,054 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 100 flow [2023-08-29 21:35:01,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-29 21:35:01,056 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -10 predicate places. [2023-08-29 21:35:01,056 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 100 flow [2023-08-29 21:35:01,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:01,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:01,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 21:35:01,057 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:01,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:01,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1564225874, now seen corresponding path program 1 times [2023-08-29 21:35:01,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:01,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703477530] [2023-08-29 21:35:01,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:01,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:01,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:01,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:01,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:01,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703477530] [2023-08-29 21:35:01,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703477530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:01,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:01,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:01,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290466829] [2023-08-29 21:35:01,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:01,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:01,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 287 [2023-08-29 21:35:01,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:01,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 287 [2023-08-29 21:35:01,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:01,565 INFO L130 PetriNetUnfolder]: 2967/4734 cut-off events. [2023-08-29 21:35:01,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 21:35:01,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9457 conditions, 4734 events. 2967/4734 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 24979 event pairs, 911 based on Foata normal form. 0/4329 useless extension candidates. Maximal degree in co-relation 9453. Up to 3412 conditions per place. [2023-08-29 21:35:01,587 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 71 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-29 21:35:01,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 303 flow [2023-08-29 21:35:01,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:01,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:01,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 508 transitions. [2023-08-29 21:35:01,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5900116144018583 [2023-08-29 21:35:01,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 508 transitions. [2023-08-29 21:35:01,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 508 transitions. [2023-08-29 21:35:01,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:01,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 508 transitions. [2023-08-29 21:35:01,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,594 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 100 flow. Second operand 3 states and 508 transitions. [2023-08-29 21:35:01,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 303 flow [2023-08-29 21:35:01,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 74 transitions, 299 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:01,596 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 108 flow [2023-08-29 21:35:01,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-29 21:35:01,596 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -9 predicate places. [2023-08-29 21:35:01,596 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 108 flow [2023-08-29 21:35:01,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:01,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:01,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 21:35:01,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:01,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1700573446, now seen corresponding path program 1 times [2023-08-29 21:35:01,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:01,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040063790] [2023-08-29 21:35:01,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:01,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:01,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:01,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040063790] [2023-08-29 21:35:01,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040063790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:01,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024206531] [2023-08-29 21:35:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:01,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:01,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:01,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 287 [2023-08-29 21:35:01,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:01,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:01,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 287 [2023-08-29 21:35:01,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:02,131 INFO L130 PetriNetUnfolder]: 1487/2755 cut-off events. [2023-08-29 21:35:02,131 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-08-29 21:35:02,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5764 conditions, 2755 events. 1487/2755 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 15946 event pairs, 496 based on Foata normal form. 162/2735 useless extension candidates. Maximal degree in co-relation 5759. Up to 1619 conditions per place. [2023-08-29 21:35:02,143 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 73 selfloop transitions, 9 changer transitions 0/83 dead transitions. [2023-08-29 21:35:02,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 83 transitions, 356 flow [2023-08-29 21:35:02,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:02,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:02,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 644 transitions. [2023-08-29 21:35:02,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-08-29 21:35:02,146 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 644 transitions. [2023-08-29 21:35:02,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 644 transitions. [2023-08-29 21:35:02,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:02,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 644 transitions. [2023-08-29 21:35:02,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,151 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,151 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 108 flow. Second operand 4 states and 644 transitions. [2023-08-29 21:35:02,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 83 transitions, 356 flow [2023-08-29 21:35:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 83 transitions, 350 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:02,156 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 154 flow [2023-08-29 21:35:02,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2023-08-29 21:35:02,157 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -7 predicate places. [2023-08-29 21:35:02,157 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 154 flow [2023-08-29 21:35:02,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 142.5) internal successors, (570), 4 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:02,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:02,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 21:35:02,158 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:02,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:02,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1642049333, now seen corresponding path program 1 times [2023-08-29 21:35:02,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:02,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125367617] [2023-08-29 21:35:02,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:02,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:02,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:02,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125367617] [2023-08-29 21:35:02,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125367617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:02,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:02,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:02,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328186084] [2023-08-29 21:35:02,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:02,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:02,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:02,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:02,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:02,252 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 287 [2023-08-29 21:35:02,253 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,253 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:02,253 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 287 [2023-08-29 21:35:02,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:02,525 INFO L130 PetriNetUnfolder]: 1472/2680 cut-off events. [2023-08-29 21:35:02,525 INFO L131 PetriNetUnfolder]: For 404/404 co-relation queries the response was YES. [2023-08-29 21:35:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6487 conditions, 2680 events. 1472/2680 cut-off events. For 404/404 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 15457 event pairs, 383 based on Foata normal form. 0/2504 useless extension candidates. Maximal degree in co-relation 6481. Up to 1915 conditions per place. [2023-08-29 21:35:02,541 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 80 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-08-29 21:35:02,541 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 85 transitions, 418 flow [2023-08-29 21:35:02,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:02,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:02,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 506 transitions. [2023-08-29 21:35:02,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5876887340301974 [2023-08-29 21:35:02,543 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 506 transitions. [2023-08-29 21:35:02,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 506 transitions. [2023-08-29 21:35:02,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:02,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 506 transitions. [2023-08-29 21:35:02,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 168.66666666666666) internal successors, (506), 3 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,548 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,548 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 154 flow. Second operand 3 states and 506 transitions. [2023-08-29 21:35:02,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 85 transitions, 418 flow [2023-08-29 21:35:02,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 85 transitions, 417 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 21:35:02,551 INFO L231 Difference]: Finished difference. Result has 57 places, 52 transitions, 161 flow [2023-08-29 21:35:02,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=57, PETRI_TRANSITIONS=52} [2023-08-29 21:35:02,552 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-08-29 21:35:02,552 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 52 transitions, 161 flow [2023-08-29 21:35:02,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:02,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 21:35:02,553 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:02,554 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1408466216, now seen corresponding path program 1 times [2023-08-29 21:35:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:02,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866973430] [2023-08-29 21:35:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:02,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:02,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:02,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866973430] [2023-08-29 21:35:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866973430] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615413085] [2023-08-29 21:35:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:02,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:02,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 287 [2023-08-29 21:35:02,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 52 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:02,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:02,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 287 [2023-08-29 21:35:02,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:03,135 INFO L130 PetriNetUnfolder]: 1597/2897 cut-off events. [2023-08-29 21:35:03,136 INFO L131 PetriNetUnfolder]: For 536/536 co-relation queries the response was YES. [2023-08-29 21:35:03,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7251 conditions, 2897 events. 1597/2897 cut-off events. For 536/536 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 16463 event pairs, 849 based on Foata normal form. 53/2774 useless extension candidates. Maximal degree in co-relation 7244. Up to 1647 conditions per place. [2023-08-29 21:35:03,150 INFO L137 encePairwiseOnDemand]: 279/287 looper letters, 144 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2023-08-29 21:35:03,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 151 transitions, 750 flow [2023-08-29 21:35:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 21:35:03,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 21:35:03,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 990 transitions. [2023-08-29 21:35:03,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5749128919860628 [2023-08-29 21:35:03,154 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 990 transitions. [2023-08-29 21:35:03,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 990 transitions. [2023-08-29 21:35:03,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:03,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 990 transitions. [2023-08-29 21:35:03,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 165.0) internal successors, (990), 6 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,161 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 287.0) internal successors, (2009), 7 states have internal predecessors, (2009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,161 INFO L175 Difference]: Start difference. First operand has 57 places, 52 transitions, 161 flow. Second operand 6 states and 990 transitions. [2023-08-29 21:35:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 151 transitions, 750 flow [2023-08-29 21:35:03,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 151 transitions, 740 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:03,165 INFO L231 Difference]: Finished difference. Result has 62 places, 52 transitions, 184 flow [2023-08-29 21:35:03,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=184, PETRI_PLACES=62, PETRI_TRANSITIONS=52} [2023-08-29 21:35:03,166 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-29 21:35:03,166 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 52 transitions, 184 flow [2023-08-29 21:35:03,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:03,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:03,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 21:35:03,167 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:03,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -104709332, now seen corresponding path program 1 times [2023-08-29 21:35:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551301255] [2023-08-29 21:35:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:03,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:03,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551301255] [2023-08-29 21:35:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551301255] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:03,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:03,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:03,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342998645] [2023-08-29 21:35:03,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:03,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:03,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:03,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:03,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 287 [2023-08-29 21:35:03,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 184 flow. Second operand has 3 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) [2023-08-29 21:35:03,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:03,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 287 [2023-08-29 21:35:03,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:03,585 INFO L130 PetriNetUnfolder]: 1485/3067 cut-off events. [2023-08-29 21:35:03,586 INFO L131 PetriNetUnfolder]: For 1147/1147 co-relation queries the response was YES. [2023-08-29 21:35:03,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 3067 events. 1485/3067 cut-off events. For 1147/1147 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 20111 event pairs, 614 based on Foata normal form. 331/3178 useless extension candidates. Maximal degree in co-relation 8610. Up to 1899 conditions per place. [2023-08-29 21:35:03,601 INFO L137 encePairwiseOnDemand]: 265/287 looper letters, 62 selfloop transitions, 27 changer transitions 0/90 dead transitions. [2023-08-29 21:35:03,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 90 transitions, 503 flow [2023-08-29 21:35:03,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:03,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:03,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 464 transitions. [2023-08-29 21:35:03,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389082462253194 [2023-08-29 21:35:03,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 464 transitions. [2023-08-29 21:35:03,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 464 transitions. [2023-08-29 21:35:03,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:03,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 464 transitions. [2023-08-29 21:35:03,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,607 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 184 flow. Second operand 3 states and 464 transitions. [2023-08-29 21:35:03,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 90 transitions, 503 flow [2023-08-29 21:35:03,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 474 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-29 21:35:03,616 INFO L231 Difference]: Finished difference. Result has 59 places, 71 transitions, 353 flow [2023-08-29 21:35:03,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=59, PETRI_TRANSITIONS=71} [2023-08-29 21:35:03,617 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-08-29 21:35:03,617 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 71 transitions, 353 flow [2023-08-29 21:35:03,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-29 21:35:03,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:03,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:03,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 21:35:03,618 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:03,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:03,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1958360197, now seen corresponding path program 1 times [2023-08-29 21:35:03,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:03,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172002981] [2023-08-29 21:35:03,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:03,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:03,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:03,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:03,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:03,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172002981] [2023-08-29 21:35:03,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172002981] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:03,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:03,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 21:35:03,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522229528] [2023-08-29 21:35:03,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:03,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 21:35:03,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:03,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 21:35:03,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-29 21:35:03,846 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 287 [2023-08-29 21:35:03,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 71 transitions, 353 flow. Second operand has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:03,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:03,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 287 [2023-08-29 21:35:03,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:04,066 INFO L130 PetriNetUnfolder]: 784/1878 cut-off events. [2023-08-29 21:35:04,066 INFO L131 PetriNetUnfolder]: For 1101/1101 co-relation queries the response was YES. [2023-08-29 21:35:04,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6566 conditions, 1878 events. 784/1878 cut-off events. For 1101/1101 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 11889 event pairs, 384 based on Foata normal form. 98/1830 useless extension candidates. Maximal degree in co-relation 6557. Up to 1084 conditions per place. [2023-08-29 21:35:04,076 INFO L137 encePairwiseOnDemand]: 270/287 looper letters, 58 selfloop transitions, 25 changer transitions 0/84 dead transitions. [2023-08-29 21:35:04,076 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 84 transitions, 573 flow [2023-08-29 21:35:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:04,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 561 transitions. [2023-08-29 21:35:04,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4886759581881533 [2023-08-29 21:35:04,078 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 561 transitions. [2023-08-29 21:35:04,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 561 transitions. [2023-08-29 21:35:04,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:04,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 561 transitions. [2023-08-29 21:35:04,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.25) internal successors, (561), 4 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,082 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,082 INFO L175 Difference]: Start difference. First operand has 59 places, 71 transitions, 353 flow. Second operand 4 states and 561 transitions. [2023-08-29 21:35:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 84 transitions, 573 flow [2023-08-29 21:35:04,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 84 transitions, 537 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:04,089 INFO L231 Difference]: Finished difference. Result has 60 places, 71 transitions, 367 flow [2023-08-29 21:35:04,089 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=367, PETRI_PLACES=60, PETRI_TRANSITIONS=71} [2023-08-29 21:35:04,090 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-08-29 21:35:04,090 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 71 transitions, 367 flow [2023-08-29 21:35:04,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.0) internal successors, (762), 6 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:04,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:04,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 21:35:04,091 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:04,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:04,092 INFO L85 PathProgramCache]: Analyzing trace with hash 340543319, now seen corresponding path program 1 times [2023-08-29 21:35:04,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:04,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22489588] [2023-08-29 21:35:04,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:04,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:04,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:04,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:04,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22489588] [2023-08-29 21:35:04,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22489588] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:04,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:04,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 21:35:04,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674383549] [2023-08-29 21:35:04,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:04,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:04,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:04,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:04,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:04,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 287 [2023-08-29 21:35:04,277 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 71 transitions, 367 flow. Second operand has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,277 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:04,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 287 [2023-08-29 21:35:04,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:04,524 INFO L130 PetriNetUnfolder]: 905/2256 cut-off events. [2023-08-29 21:35:04,524 INFO L131 PetriNetUnfolder]: For 2146/2146 co-relation queries the response was YES. [2023-08-29 21:35:04,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8061 conditions, 2256 events. 905/2256 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 15795 event pairs, 176 based on Foata normal form. 28/2124 useless extension candidates. Maximal degree in co-relation 8053. Up to 1395 conditions per place. [2023-08-29 21:35:04,535 INFO L137 encePairwiseOnDemand]: 278/287 looper letters, 97 selfloop transitions, 26 changer transitions 0/124 dead transitions. [2023-08-29 21:35:04,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 902 flow [2023-08-29 21:35:04,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:04,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:04,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 638 transitions. [2023-08-29 21:35:04,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5557491289198606 [2023-08-29 21:35:04,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 638 transitions. [2023-08-29 21:35:04,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 638 transitions. [2023-08-29 21:35:04,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:04,539 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 638 transitions. [2023-08-29 21:35:04,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.5) internal successors, (638), 4 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,542 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,542 INFO L175 Difference]: Start difference. First operand has 60 places, 71 transitions, 367 flow. Second operand 4 states and 638 transitions. [2023-08-29 21:35:04,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 902 flow [2023-08-29 21:35:04,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 858 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:04,549 INFO L231 Difference]: Finished difference. Result has 62 places, 92 transitions, 595 flow [2023-08-29 21:35:04,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=595, PETRI_PLACES=62, PETRI_TRANSITIONS=92} [2023-08-29 21:35:04,550 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 0 predicate places. [2023-08-29 21:35:04,550 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 92 transitions, 595 flow [2023-08-29 21:35:04,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:04,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:04,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 21:35:04,551 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:04,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:04,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1517517366, now seen corresponding path program 1 times [2023-08-29 21:35:04,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:04,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451638818] [2023-08-29 21:35:04,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:04,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:04,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:04,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:04,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:04,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451638818] [2023-08-29 21:35:04,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451638818] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:04,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:04,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:35:04,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623083564] [2023-08-29 21:35:04,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:04,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:04,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:04,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:04,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:04,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 287 [2023-08-29 21:35:04,925 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 92 transitions, 595 flow. Second operand has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:04,925 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:04,925 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 287 [2023-08-29 21:35:04,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:05,079 INFO L130 PetriNetUnfolder]: 421/1240 cut-off events. [2023-08-29 21:35:05,079 INFO L131 PetriNetUnfolder]: For 1416/1416 co-relation queries the response was YES. [2023-08-29 21:35:05,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4518 conditions, 1240 events. 421/1240 cut-off events. For 1416/1416 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 8037 event pairs, 103 based on Foata normal form. 53/1243 useless extension candidates. Maximal degree in co-relation 4509. Up to 840 conditions per place. [2023-08-29 21:35:05,085 INFO L137 encePairwiseOnDemand]: 280/287 looper letters, 66 selfloop transitions, 20 changer transitions 0/87 dead transitions. [2023-08-29 21:35:05,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 87 transitions, 677 flow [2023-08-29 21:35:05,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:05,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 574 transitions. [2023-08-29 21:35:05,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-29 21:35:05,088 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 574 transitions. [2023-08-29 21:35:05,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 574 transitions. [2023-08-29 21:35:05,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:05,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 574 transitions. [2023-08-29 21:35:05,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.5) internal successors, (574), 4 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,092 INFO L175 Difference]: Start difference. First operand has 62 places, 92 transitions, 595 flow. Second operand 4 states and 574 transitions. [2023-08-29 21:35:05,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 87 transitions, 677 flow [2023-08-29 21:35:05,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 87 transitions, 672 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:05,095 INFO L231 Difference]: Finished difference. Result has 60 places, 74 transitions, 478 flow [2023-08-29 21:35:05,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=478, PETRI_PLACES=60, PETRI_TRANSITIONS=74} [2023-08-29 21:35:05,095 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -2 predicate places. [2023-08-29 21:35:05,096 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 74 transitions, 478 flow [2023-08-29 21:35:05,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.8) internal successors, (669), 5 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:05,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:05,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 21:35:05,096 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:05,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:05,097 INFO L85 PathProgramCache]: Analyzing trace with hash 1632616539, now seen corresponding path program 1 times [2023-08-29 21:35:05,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:05,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312864632] [2023-08-29 21:35:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:05,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:05,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:05,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:05,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:05,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312864632] [2023-08-29 21:35:05,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312864632] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:05,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:05,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:35:05,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232788880] [2023-08-29 21:35:05,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:05,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:05,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:05,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:05,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:05,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 287 [2023-08-29 21:35:05,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 74 transitions, 478 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:05,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 287 [2023-08-29 21:35:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:05,334 INFO L130 PetriNetUnfolder]: 338/1021 cut-off events. [2023-08-29 21:35:05,334 INFO L131 PetriNetUnfolder]: For 1281/1283 co-relation queries the response was YES. [2023-08-29 21:35:05,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 1021 events. 338/1021 cut-off events. For 1281/1283 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5971 event pairs, 235 based on Foata normal form. 0/996 useless extension candidates. Maximal degree in co-relation 3793. Up to 982 conditions per place. [2023-08-29 21:35:05,338 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 63 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-08-29 21:35:05,339 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 70 transitions, 566 flow [2023-08-29 21:35:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:05,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:05,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-29 21:35:05,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145180023228804 [2023-08-29 21:35:05,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-29 21:35:05,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-29 21:35:05,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:05,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-29 21:35:05,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,343 INFO L175 Difference]: Start difference. First operand has 60 places, 74 transitions, 478 flow. Second operand 3 states and 443 transitions. [2023-08-29 21:35:05,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 70 transitions, 566 flow [2023-08-29 21:35:05,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:35:05,347 INFO L231 Difference]: Finished difference. Result has 58 places, 70 transitions, 411 flow [2023-08-29 21:35:05,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=411, PETRI_PLACES=58, PETRI_TRANSITIONS=70} [2023-08-29 21:35:05,347 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2023-08-29 21:35:05,347 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 70 transitions, 411 flow [2023-08-29 21:35:05,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:05,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:05,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 21:35:05,348 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:05,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1632616540, now seen corresponding path program 1 times [2023-08-29 21:35:05,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:05,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994590057] [2023-08-29 21:35:05,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:05,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:05,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:05,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994590057] [2023-08-29 21:35:05,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994590057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:05,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:05,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:05,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910239280] [2023-08-29 21:35:05,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:05,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:05,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:05,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:05,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 287 [2023-08-29 21:35:05,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 70 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:05,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 287 [2023-08-29 21:35:05,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:05,523 INFO L130 PetriNetUnfolder]: 257/806 cut-off events. [2023-08-29 21:35:05,523 INFO L131 PetriNetUnfolder]: For 744/746 co-relation queries the response was YES. [2023-08-29 21:35:05,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2783 conditions, 806 events. 257/806 cut-off events. For 744/746 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 4347 event pairs, 189 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 2775. Up to 776 conditions per place. [2023-08-29 21:35:05,526 INFO L137 encePairwiseOnDemand]: 284/287 looper letters, 59 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-29 21:35:05,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 66 transitions, 495 flow [2023-08-29 21:35:05,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:05,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:05,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-29 21:35:05,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307781649245064 [2023-08-29 21:35:05,528 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-29 21:35:05,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-29 21:35:05,528 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:05,528 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-29 21:35:05,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,531 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,531 INFO L175 Difference]: Start difference. First operand has 58 places, 70 transitions, 411 flow. Second operand 3 states and 457 transitions. [2023-08-29 21:35:05,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 66 transitions, 495 flow [2023-08-29 21:35:05,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 491 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:05,534 INFO L231 Difference]: Finished difference. Result has 57 places, 66 transitions, 373 flow [2023-08-29 21:35:05,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=373, PETRI_PLACES=57, PETRI_TRANSITIONS=66} [2023-08-29 21:35:05,534 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -5 predicate places. [2023-08-29 21:35:05,534 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 66 transitions, 373 flow [2023-08-29 21:35:05,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:05,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:05,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 21:35:05,535 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:05,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1331212996, now seen corresponding path program 1 times [2023-08-29 21:35:05,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:05,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480274785] [2023-08-29 21:35:05,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:05,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:05,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:05,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:05,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480274785] [2023-08-29 21:35:05,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480274785] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:05,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:05,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 21:35:05,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091001751] [2023-08-29 21:35:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:05,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-29 21:35:05,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:05,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-29 21:35:05,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-29 21:35:05,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 287 [2023-08-29 21:35:05,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 66 transitions, 373 flow. Second operand has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:05,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 287 [2023-08-29 21:35:05,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:05,783 INFO L130 PetriNetUnfolder]: 256/798 cut-off events. [2023-08-29 21:35:05,783 INFO L131 PetriNetUnfolder]: For 737/739 co-relation queries the response was YES. [2023-08-29 21:35:05,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2756 conditions, 798 events. 256/798 cut-off events. For 737/739 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4324 event pairs, 123 based on Foata normal form. 9/807 useless extension candidates. Maximal degree in co-relation 2748. Up to 550 conditions per place. [2023-08-29 21:35:05,787 INFO L137 encePairwiseOnDemand]: 283/287 looper letters, 88 selfloop transitions, 3 changer transitions 0/96 dead transitions. [2023-08-29 21:35:05,787 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 96 transitions, 721 flow [2023-08-29 21:35:05,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:05,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:05,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-29 21:35:05,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5574912891986062 [2023-08-29 21:35:05,789 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-29 21:35:05,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-29 21:35:05,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:05,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-29 21:35:05,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,793 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,793 INFO L175 Difference]: Start difference. First operand has 57 places, 66 transitions, 373 flow. Second operand 4 states and 640 transitions. [2023-08-29 21:35:05,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 96 transitions, 721 flow [2023-08-29 21:35:05,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 96 transitions, 717 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 21:35:05,796 INFO L231 Difference]: Finished difference. Result has 59 places, 66 transitions, 380 flow [2023-08-29 21:35:05,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=380, PETRI_PLACES=59, PETRI_TRANSITIONS=66} [2023-08-29 21:35:05,797 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -3 predicate places. [2023-08-29 21:35:05,797 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 66 transitions, 380 flow [2023-08-29 21:35:05,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:05,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:05,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:05,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 21:35:05,798 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:05,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:05,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2051759421, now seen corresponding path program 1 times [2023-08-29 21:35:05,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:05,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339435860] [2023-08-29 21:35:05,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:05,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:06,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:06,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339435860] [2023-08-29 21:35:06,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339435860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:06,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:06,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-29 21:35:06,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423224447] [2023-08-29 21:35:06,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:06,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-29 21:35:06,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:06,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-29 21:35:06,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-29 21:35:06,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 287 [2023-08-29 21:35:06,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 66 transitions, 380 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:06,143 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 287 [2023-08-29 21:35:06,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:06,267 INFO L130 PetriNetUnfolder]: 222/695 cut-off events. [2023-08-29 21:35:06,267 INFO L131 PetriNetUnfolder]: For 715/715 co-relation queries the response was YES. [2023-08-29 21:35:06,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2501 conditions, 695 events. 222/695 cut-off events. For 715/715 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 3597 event pairs, 81 based on Foata normal form. 7/702 useless extension candidates. Maximal degree in co-relation 2492. Up to 495 conditions per place. [2023-08-29 21:35:06,271 INFO L137 encePairwiseOnDemand]: 282/287 looper letters, 62 selfloop transitions, 12 changer transitions 0/75 dead transitions. [2023-08-29 21:35:06,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 75 transitions, 550 flow [2023-08-29 21:35:06,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 21:35:06,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 21:35:06,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 609 transitions. [2023-08-29 21:35:06,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5304878048780488 [2023-08-29 21:35:06,273 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 609 transitions. [2023-08-29 21:35:06,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 609 transitions. [2023-08-29 21:35:06,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:06,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 609 transitions. [2023-08-29 21:35:06,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.25) internal successors, (609), 4 states have internal predecessors, (609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,277 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 287.0) internal successors, (1435), 5 states have internal predecessors, (1435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,277 INFO L175 Difference]: Start difference. First operand has 59 places, 66 transitions, 380 flow. Second operand 4 states and 609 transitions. [2023-08-29 21:35:06,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 75 transitions, 550 flow [2023-08-29 21:35:06,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 75 transitions, 537 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-08-29 21:35:06,281 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 343 flow [2023-08-29 21:35:06,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=343, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-29 21:35:06,281 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -6 predicate places. [2023-08-29 21:35:06,282 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 343 flow [2023-08-29 21:35:06,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 21:35:06,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:06,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-29 21:35:06,283 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 12 more)] === [2023-08-29 21:35:06,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 21:35:06,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1958234167, now seen corresponding path program 1 times [2023-08-29 21:35:06,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 21:35:06,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021616896] [2023-08-29 21:35:06,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 21:35:06,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 21:35:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 21:35:06,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 21:35:06,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 21:35:06,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021616896] [2023-08-29 21:35:06,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021616896] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 21:35:06,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 21:35:06,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 21:35:06,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863541482] [2023-08-29 21:35:06,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 21:35:06,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 21:35:06,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 21:35:06,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 21:35:06,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 21:35:06,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 287 [2023-08-29 21:35:06,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 21:35:06,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 287 [2023-08-29 21:35:06,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 21:35:06,658 INFO L130 PetriNetUnfolder]: 222/696 cut-off events. [2023-08-29 21:35:06,659 INFO L131 PetriNetUnfolder]: For 883/883 co-relation queries the response was YES. [2023-08-29 21:35:06,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2436 conditions, 696 events. 222/696 cut-off events. For 883/883 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 3517 event pairs, 170 based on Foata normal form. 1/697 useless extension candidates. Maximal degree in co-relation 2429. Up to 673 conditions per place. [2023-08-29 21:35:06,661 INFO L137 encePairwiseOnDemand]: 285/287 looper letters, 0 selfloop transitions, 0 changer transitions 58/58 dead transitions. [2023-08-29 21:35:06,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 451 flow [2023-08-29 21:35:06,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 21:35:06,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 21:35:06,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-29 21:35:06,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354239256678281 [2023-08-29 21:35:06,663 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-29 21:35:06,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-29 21:35:06,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 21:35:06,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-29 21:35:06,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 287.0) internal successors, (1148), 4 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,666 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 343 flow. Second operand 3 states and 461 transitions. [2023-08-29 21:35:06,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 451 flow [2023-08-29 21:35:06,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 58 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 21:35:06,668 INFO L231 Difference]: Finished difference. Result has 54 places, 0 transitions, 0 flow [2023-08-29 21:35:06,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=287, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=54, PETRI_TRANSITIONS=0} [2023-08-29 21:35:06,669 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -8 predicate places. [2023-08-29 21:35:06,669 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 0 transitions, 0 flow [2023-08-29 21:35:06,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 21:35:06,672 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 15 remaining) [2023-08-29 21:35:06,673 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 15 remaining) [2023-08-29 21:35:06,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 15 remaining) [2023-08-29 21:35:06,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 15 remaining) [2023-08-29 21:35:06,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (10 of 15 remaining) [2023-08-29 21:35:06,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (9 of 15 remaining) [2023-08-29 21:35:06,674 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (8 of 15 remaining) [2023-08-29 21:35:06,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (7 of 15 remaining) [2023-08-29 21:35:06,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 15 remaining) [2023-08-29 21:35:06,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 15 remaining) [2023-08-29 21:35:06,675 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 15 remaining) [2023-08-29 21:35:06,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 15 remaining) [2023-08-29 21:35:06,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (2 of 15 remaining) [2023-08-29 21:35:06,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 15 remaining) [2023-08-29 21:35:06,676 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 15 remaining) [2023-08-29 21:35:06,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-29 21:35:06,677 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 21:35:06,680 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-29 21:35:06,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-29 21:35:06,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 09:35:06 BasicIcfg [2023-08-29 21:35:06,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-29 21:35:06,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-29 21:35:06,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-29 21:35:06,683 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-29 21:35:06,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 09:34:53" (3/4) ... [2023-08-29 21:35:06,686 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-29 21:35:06,691 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-08-29 21:35:06,691 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-08-29 21:35:06,695 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-29 21:35:06,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-29 21:35:06,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-29 21:35:06,696 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-29 21:35:06,725 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-29 21:35:06,725 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-29 21:35:06,726 INFO L158 Benchmark]: Toolchain (without parser) took 14177.16ms. Allocated memory was 83.9MB in the beginning and 717.2MB in the end (delta: 633.3MB). Free memory was 59.9MB in the beginning and 416.4MB in the end (delta: -356.6MB). Peak memory consumption was 276.6MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,726 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 57.8kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-29 21:35:06,726 INFO L158 Benchmark]: CACSL2BoogieTranslator took 446.52ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 59.7MB in the end (delta: -201.0kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,727 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.86ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,727 INFO L158 Benchmark]: Boogie Preprocessor took 59.91ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 55.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,727 INFO L158 Benchmark]: RCFGBuilder took 593.29ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 37.5MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,728 INFO L158 Benchmark]: TraceAbstraction took 12978.98ms. Allocated memory was 83.9MB in the beginning and 717.2MB in the end (delta: 633.3MB). Free memory was 37.0MB in the beginning and 420.6MB in the end (delta: -383.6MB). Peak memory consumption was 248.5MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,728 INFO L158 Benchmark]: Witness Printer took 42.55ms. Allocated memory is still 717.2MB. Free memory was 420.6MB in the beginning and 416.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-08-29 21:35:06,729 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 60.8MB. Free memory was 38.7MB in the beginning and 38.6MB in the end (delta: 57.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 446.52ms. Allocated memory is still 83.9MB. Free memory was 59.5MB in the beginning and 59.7MB in the end (delta: -201.0kB). Peak memory consumption was 19.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.86ms. Allocated memory is still 83.9MB. Free memory was 59.7MB in the beginning and 57.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.91ms. Allocated memory is still 83.9MB. Free memory was 57.6MB in the beginning and 55.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 593.29ms. Allocated memory is still 83.9MB. Free memory was 55.9MB in the beginning and 37.5MB in the end (delta: 18.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 12978.98ms. Allocated memory was 83.9MB in the beginning and 717.2MB in the end (delta: 633.3MB). Free memory was 37.0MB in the beginning and 420.6MB in the end (delta: -383.6MB). Peak memory consumption was 248.5MB. Max. memory is 16.1GB. * Witness Printer took 42.55ms. Allocated memory is still 717.2MB. Free memory was 420.6MB in the beginning and 416.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 156 PlacesBefore, 62 PlacesAfterwards, 153 TransitionsBefore, 58 TransitionsAfterwards, 5076 CoEnabledTransitionPairs, 7 FixpointIterations, 49 TrivialSequentialCompositions, 72 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 128 TotalNumberOfCompositions, 17127 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5478, independent: 4991, independent conditional: 0, independent unconditional: 4991, dependent: 487, dependent conditional: 0, dependent unconditional: 487, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2518, independent: 2455, independent conditional: 0, independent unconditional: 2455, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5478, independent: 2536, independent conditional: 0, independent unconditional: 2536, dependent: 424, dependent conditional: 0, dependent unconditional: 424, unknown: 2518, unknown conditional: 0, unknown unconditional: 2518] , Statistics on independence cache: Total cache size (in pairs): 207, Positive cache size: 169, Positive conditional cache size: 0, Positive unconditional cache size: 169, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, 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: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 19]: all allocated memory was freed For all program executions holds that all allocated memory was freed 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: 707]: 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 5 procedures, 196 locations, 15 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: 12.8s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1627 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1076 mSDsluCounter, 66 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 22 mSDsCounter, 349 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2441 IncrementalHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 349 mSolverCounterUnsat, 44 mSDtfsCounter, 2441 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=595occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 253 NumberOfCodeBlocks, 253 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 237 ConstructedInterpolants, 0 QuantifiedInterpolants, 1929 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-29 21:35:06,752 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