./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 01:36:28,685 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 01:36:28,687 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 01:36:28,723 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 01:36:28,727 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 01:36:28,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 01:36:28,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 01:36:28,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 01:36:28,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 01:36:28,745 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 01:36:28,746 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 01:36:28,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 01:36:28,748 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 01:36:28,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 01:36:28,753 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 01:36:28,754 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 01:36:28,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 01:36:28,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 01:36:28,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 01:36:28,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 01:36:28,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 01:36:28,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 01:36:28,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 01:36:28,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 01:36:28,779 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 01:36:28,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 01:36:28,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 01:36:28,781 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 01:36:28,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 01:36:28,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 01:36:28,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 01:36:28,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 01:36:28,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 01:36:28,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 01:36:28,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 01:36:28,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 01:36:28,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 01:36:28,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 01:36:28,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 01:36:28,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 01:36:28,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 01:36:28,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 01:36:28,829 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 01:36:28,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 01:36:28,830 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 01:36:28,830 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 01:36:28,831 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 01:36:28,831 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 01:36:28,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 01:36:28,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 01:36:28,832 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 01:36:28,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 01:36:28,833 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 01:36:28,833 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 01:36:28,834 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 01:36:28,834 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 01:36:28,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 01:36:28,834 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 01:36:28,834 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 01:36:28,835 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 01:36:28,835 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 01:36:28,835 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 01:36:28,835 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 01:36:28,835 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 01:36:28,836 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 01:36:28,836 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 01:36:28,836 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 01:36:28,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:36:28,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 01:36:28,837 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 01:36:28,837 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 01:36:28,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 01:36:28,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 01:36:28,837 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 01:36:28,838 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 01:36:28,838 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 01:36:28,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 01:36:29,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 01:36:29,146 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 01:36:29,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 01:36:29,149 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 01:36:29,151 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 01:36:29,152 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-09-01 01:36:30,347 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 01:36:30,564 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 01:36:30,565 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c [2023-09-01 01:36:30,575 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8633210cf/32c4871693d24619a3b3d4cfb0a6c9fb/FLAGe09af2699 [2023-09-01 01:36:30,602 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8633210cf/32c4871693d24619a3b3d4cfb0a6c9fb [2023-09-01 01:36:30,605 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 01:36:30,606 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 01:36:30,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 01:36:30,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 01:36:30,610 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 01:36:30,611 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,612 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41e9637f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30, skipping insertion in model container [2023-09-01 01:36:30,613 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 01:36:30,638 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 01:36:30,825 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c[2817,2830] [2023-09-01 01:36:30,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:36:30,850 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 01:36:30,891 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-file-item-trans.wvr.c[2817,2830] [2023-09-01 01:36:30,894 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 01:36:30,911 INFO L208 MainTranslator]: Completed translation [2023-09-01 01:36:30,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30 WrapperNode [2023-09-01 01:36:30,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 01:36:30,914 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 01:36:30,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 01:36:30,915 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 01:36:30,920 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,973 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 202 [2023-09-01 01:36:30,974 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 01:36:30,974 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 01:36:30,974 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 01:36:30,975 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 01:36:30,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,983 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:30,999 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,019 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 01:36:31,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 01:36:31,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 01:36:31,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 01:36:31,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (1/1) ... [2023-09-01 01:36:31,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 01:36:31,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 01:36:31,068 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 01:36:31,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 01:36:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 01:36:31,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 01:36:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 01:36:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 01:36:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 01:36:31,101 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 01:36:31,101 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 01:36:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 01:36:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 01:36:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 01:36:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 01:36:31,102 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 01:36:31,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 01:36:31,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 01:36:31,104 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 01:36:31,256 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 01:36:31,266 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 01:36:31,618 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 01:36:31,626 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 01:36:31,627 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-09-01 01:36:31,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:31 BoogieIcfgContainer [2023-09-01 01:36:31,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 01:36:31,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 01:36:31,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 01:36:31,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 01:36:31,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 01:36:30" (1/3) ... [2023-09-01 01:36:31,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deb9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:36:31, skipping insertion in model container [2023-09-01 01:36:31,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 01:36:30" (2/3) ... [2023-09-01 01:36:31,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deb9e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 01:36:31, skipping insertion in model container [2023-09-01 01:36:31,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:31" (3/3) ... [2023-09-01 01:36:31,652 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2023-09-01 01:36:31,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 01:36:31,668 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-09-01 01:36:31,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 01:36:31,802 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 01:36:31,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 250 transitions, 524 flow [2023-09-01 01:36:31,968 INFO L130 PetriNetUnfolder]: 19/247 cut-off events. [2023-09-01 01:36:31,968 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:36:31,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 260 conditions, 247 events. 19/247 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 579 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-09-01 01:36:31,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 250 transitions, 524 flow [2023-09-01 01:36:31,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 243 transitions, 504 flow [2023-09-01 01:36:31,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 01:36:31,994 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 243 transitions, 504 flow [2023-09-01 01:36:31,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 243 transitions, 504 flow [2023-09-01 01:36:31,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 243 transitions, 504 flow [2023-09-01 01:36:32,039 INFO L130 PetriNetUnfolder]: 19/243 cut-off events. [2023-09-01 01:36:32,039 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 01:36:32,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 19/243 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 571 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 168. Up to 2 conditions per place. [2023-09-01 01:36:32,056 INFO L119 LiptonReduction]: Number of co-enabled transitions 16368 [2023-09-01 01:36:40,682 INFO L134 LiptonReduction]: Checked pairs total: 15678 [2023-09-01 01:36:40,682 INFO L136 LiptonReduction]: Total number of compositions: 304 [2023-09-01 01:36:40,695 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 01:36:40,700 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;@582c35d1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 01:36:40,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-09-01 01:36:40,701 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 01:36:40,702 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:40,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:40,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 01:36:40,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:40,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:40,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1048, now seen corresponding path program 1 times [2023-09-01 01:36:40,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:40,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655824383] [2023-09-01 01:36:40,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:40,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:40,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:40,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655824383] [2023-09-01 01:36:40,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655824383] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:40,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:40,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 01:36:40,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708457685] [2023-09-01 01:36:40,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:40,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 01:36:40,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 01:36:40,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 01:36:40,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 554 [2023-09-01 01:36:40,855 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 236.5) internal successors, (473), 2 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:40,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 554 [2023-09-01 01:36:40,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:40,948 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-09-01 01:36:40,948 INFO L131 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2023-09-01 01:36:40,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 469 event pairs, 81 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 244. Up to 165 conditions per place. [2023-09-01 01:36:40,951 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-09-01 01:36:40,951 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-09-01 01:36:40,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 01:36:40,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 01:36:40,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 501 transitions. [2023-09-01 01:36:40,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45216606498194944 [2023-09-01 01:36:40,968 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 501 transitions. [2023-09-01 01:36:40,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 501 transitions. [2023-09-01 01:36:40,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:40,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 501 transitions. [2023-09-01 01:36:40,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 250.5) internal successors, (501), 2 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,983 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 554.0) internal successors, (1662), 3 states have internal predecessors, (1662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,985 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 501 transitions. [2023-09-01 01:36:40,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-09-01 01:36:40,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 01:36:40,990 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-09-01 01:36:40,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=58, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-09-01 01:36:40,994 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:36:40,995 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-09-01 01:36:40,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 236.5) internal successors, (473), 2 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:40,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:40,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:36:40,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 01:36:40,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:40,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:40,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1028155, now seen corresponding path program 1 times [2023-09-01 01:36:40,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:40,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4767725] [2023-09-01 01:36:40,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:40,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:41,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:41,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:41,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4767725] [2023-09-01 01:36:41,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4767725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:41,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:41,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:36:41,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441376794] [2023-09-01 01:36:41,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:41,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:36:41,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:41,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:36:41,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:36:41,362 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 554 [2023-09-01 01:36:41,364 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,364 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:41,364 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 554 [2023-09-01 01:36:41,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:41,453 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-09-01 01:36:41,453 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:41,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 153 events. 76/153 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 425 event pairs, 76 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-09-01 01:36:41,454 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-09-01 01:36:41,455 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-09-01 01:36:41,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:41,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:41,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 719 transitions. [2023-09-01 01:36:41,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4326113116726835 [2023-09-01 01:36:41,458 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 719 transitions. [2023-09-01 01:36:41,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 719 transitions. [2023-09-01 01:36:41,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:41,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 719 transitions. [2023-09-01 01:36:41,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 239.66666666666666) internal successors, (719), 3 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,466 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 719 transitions. [2023-09-01 01:36:41,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-09-01 01:36:41,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 01:36:41,467 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-09-01 01:36:41,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=56, PETRI_PLACES=31, PETRI_TRANSITIONS=24} [2023-09-01 01:36:41,468 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-09-01 01:36:41,469 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-09-01 01:36:41,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:41,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 01:36:41,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 01:36:41,470 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:41,471 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:41,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1028154, now seen corresponding path program 1 times [2023-09-01 01:36:41,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:41,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080191123] [2023-09-01 01:36:41,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:41,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:41,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:41,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080191123] [2023-09-01 01:36:41,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080191123] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:41,564 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:41,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:36:41,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168671645] [2023-09-01 01:36:41,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:41,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:36:41,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:41,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:36:41,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:36:41,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 554 [2023-09-01 01:36:41,613 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,613 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:41,613 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 554 [2023-09-01 01:36:41,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:41,676 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-09-01 01:36:41,676 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 142 events. 71/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 387 event pairs, 71 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 292. Up to 142 conditions per place. [2023-09-01 01:36:41,677 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-09-01 01:36:41,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-09-01 01:36:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:41,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:41,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2023-09-01 01:36:41,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4223826714801444 [2023-09-01 01:36:41,680 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2023-09-01 01:36:41,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2023-09-01 01:36:41,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:41,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2023-09-01 01:36:41,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,687 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 702 transitions. [2023-09-01 01:36:41,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-09-01 01:36:41,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:41,688 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-09-01 01:36:41,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=30, PETRI_TRANSITIONS=22} [2023-09-01 01:36:41,689 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-09-01 01:36:41,689 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-09-01 01:36:41,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.0) internal successors, (681), 3 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:41,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:36:41,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 01:36:41,691 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:41,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash 988077891, now seen corresponding path program 1 times [2023-09-01 01:36:41,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:41,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982225725] [2023-09-01 01:36:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:41,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:41,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:41,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982225725] [2023-09-01 01:36:41,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982225725] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:41,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:41,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:36:41,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484326457] [2023-09-01 01:36:41,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:41,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:36:41,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:41,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:36:41,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:36:41,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 554 [2023-09-01 01:36:41,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:41,795 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 554 [2023-09-01 01:36:41,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:41,850 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-09-01 01:36:41,850 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:41,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 275 conditions, 131 events. 66/131 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 343 event pairs, 66 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 271. Up to 131 conditions per place. [2023-09-01 01:36:41,852 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-09-01 01:36:41,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-09-01 01:36:41,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 715 transitions. [2023-09-01 01:36:41,855 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43020457280385077 [2023-09-01 01:36:41,855 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 715 transitions. [2023-09-01 01:36:41,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 715 transitions. [2023-09-01 01:36:41,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:41,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 715 transitions. [2023-09-01 01:36:41,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 238.33333333333334) internal successors, (715), 3 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) [2023-09-01 01:36:41,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,862 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 715 transitions. [2023-09-01 01:36:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-09-01 01:36:41,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:41,863 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-09-01 01:36:41,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-09-01 01:36:41,864 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-09-01 01:36:41,864 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-09-01 01:36:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:41,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 01:36:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 01:36:41,865 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:41,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 988077890, now seen corresponding path program 1 times [2023-09-01 01:36:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928262647] [2023-09-01 01:36:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:41,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:41,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:41,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:41,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:41,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928262647] [2023-09-01 01:36:41,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928262647] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:41,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:41,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 01:36:41,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615538594] [2023-09-01 01:36:41,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:41,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 01:36:41,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:41,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 01:36:41,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 01:36:41,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 554 [2023-09-01 01:36:41,946 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:41,946 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:41,946 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 554 [2023-09-01 01:36:41,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:42,004 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-09-01 01:36:42,005 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:42,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 120 events. 61/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 299 event pairs, 61 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 250. Up to 120 conditions per place. [2023-09-01 01:36:42,006 INFO L137 encePairwiseOnDemand]: 551/554 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-09-01 01:36:42,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-09-01 01:36:42,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:42,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 698 transitions. [2023-09-01 01:36:42,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41997593261131166 [2023-09-01 01:36:42,008 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 698 transitions. [2023-09-01 01:36:42,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 698 transitions. [2023-09-01 01:36:42,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:42,009 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 698 transitions. [2023-09-01 01:36:42,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,015 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,015 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 698 transitions. [2023-09-01 01:36:42,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-09-01 01:36:42,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:42,016 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-09-01 01:36:42,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-09-01 01:36:42,017 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:36:42,017 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-09-01 01:36:42,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 227.66666666666666) internal successors, (683), 3 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,018 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:42,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:42,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 01:36:42,018 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:42,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:42,019 INFO L85 PathProgramCache]: Analyzing trace with hash 355101856, now seen corresponding path program 1 times [2023-09-01 01:36:42,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:42,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797171646] [2023-09-01 01:36:42,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:42,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:42,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:42,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:42,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797171646] [2023-09-01 01:36:42,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797171646] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:42,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:42,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 01:36:42,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000511729] [2023-09-01 01:36:42,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:42,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 01:36:42,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:42,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 01:36:42,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 01:36:42,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 554 [2023-09-01 01:36:42,222 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,222 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:42,223 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 554 [2023-09-01 01:36:42,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:42,288 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-09-01 01:36:42,289 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:42,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 100 events. 49/100 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 49 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 211. Up to 100 conditions per place. [2023-09-01 01:36:42,290 INFO L137 encePairwiseOnDemand]: 552/554 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 01:36:42,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-09-01 01:36:42,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:42,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:42,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-09-01 01:36:42,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42418772563176893 [2023-09-01 01:36:42,292 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-09-01 01:36:42,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-09-01 01:36:42,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:42,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-09-01 01:36:42,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,299 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 705 transitions. [2023-09-01 01:36:42,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-09-01 01:36:42,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:42,300 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-09-01 01:36:42,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=28, PETRI_TRANSITIONS=17} [2023-09-01 01:36:42,301 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:36:42,301 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-09-01 01:36:42,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 230.75) internal successors, (923), 4 states have internal predecessors, (923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:42,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:42,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 01:36:42,303 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:42,303 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:42,303 INFO L85 PathProgramCache]: Analyzing trace with hash 355101855, now seen corresponding path program 1 times [2023-09-01 01:36:42,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:42,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102429810] [2023-09-01 01:36:42,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:42,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:42,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:42,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:42,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102429810] [2023-09-01 01:36:42,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102429810] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:42,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:42,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 01:36:42,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201445982] [2023-09-01 01:36:42,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:42,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:42,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:42,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:42,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:42,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 554 [2023-09-01 01:36:42,473 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:42,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 554 [2023-09-01 01:36:42,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:42,531 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-09-01 01:36:42,532 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 01:36:42,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-09-01 01:36:42,533 INFO L137 encePairwiseOnDemand]: 552/554 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-09-01 01:36:42,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-09-01 01:36:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 01:36:42,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 01:36:42,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 671 transitions. [2023-09-01 01:36:42,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4037304452466907 [2023-09-01 01:36:42,535 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 671 transitions. [2023-09-01 01:36:42,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 671 transitions. [2023-09-01 01:36:42,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:42,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 671 transitions. [2023-09-01 01:36:42,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.66666666666666) internal successors, (671), 3 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,541 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 554.0) internal successors, (2216), 4 states have internal predecessors, (2216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,541 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 671 transitions. [2023-09-01 01:36:42,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-09-01 01:36:42,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:42,542 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-09-01 01:36:42,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-09-01 01:36:42,543 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-09-01 01:36:42,543 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-09-01 01:36:42,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 219.4) internal successors, (1097), 5 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:42,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:42,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:42,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 01:36:42,545 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:42,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:42,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1360094838, now seen corresponding path program 1 times [2023-09-01 01:36:42,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:42,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981165459] [2023-09-01 01:36:42,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:42,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:43,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981165459] [2023-09-01 01:36:43,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981165459] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:43,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:43,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924588518] [2023-09-01 01:36:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:43,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:43,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:43,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:44,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 554 [2023-09-01 01:36:44,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:44,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 554 [2023-09-01 01:36:44,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:44,329 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-09-01 01:36:44,329 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 01:36:44,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 334 event pairs, 1 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-09-01 01:36:44,330 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 30 selfloop transitions, 5 changer transitions 9/44 dead transitions. [2023-09-01 01:36:44,330 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 44 transitions, 199 flow [2023-09-01 01:36:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:44,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1305 transitions. [2023-09-01 01:36:44,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3925992779783393 [2023-09-01 01:36:44,334 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1305 transitions. [2023-09-01 01:36:44,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1305 transitions. [2023-09-01 01:36:44,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:44,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1305 transitions. [2023-09-01 01:36:44,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 217.5) internal successors, (1305), 6 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,344 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,344 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1305 transitions. [2023-09-01 01:36:44,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 44 transitions, 199 flow [2023-09-01 01:36:44,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 44 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:44,346 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 63 flow [2023-09-01 01:36:44,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-09-01 01:36:44,348 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-09-01 01:36:44,348 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 63 flow [2023-09-01 01:36:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:44,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:44,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:44,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 01:36:44,350 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:44,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:44,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1698100650, now seen corresponding path program 2 times [2023-09-01 01:36:44,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:44,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769683481] [2023-09-01 01:36:44,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:44,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:45,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:45,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:45,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769683481] [2023-09-01 01:36:45,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769683481] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:45,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:45,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:45,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122271094] [2023-09-01 01:36:45,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:45,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:45,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:45,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:45,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:45,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 554 [2023-09-01 01:36:45,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:45,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:45,664 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 554 [2023-09-01 01:36:45,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:45,915 INFO L130 PetriNetUnfolder]: 36/114 cut-off events. [2023-09-01 01:36:45,915 INFO L131 PetriNetUnfolder]: For 55/55 co-relation queries the response was YES. [2023-09-01 01:36:45,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 114 events. 36/114 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 402 event pairs, 2 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 294. Up to 45 conditions per place. [2023-09-01 01:36:45,916 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 32 selfloop transitions, 6 changer transitions 9/47 dead transitions. [2023-09-01 01:36:45,916 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 47 transitions, 241 flow [2023-09-01 01:36:45,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:45,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:45,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-09-01 01:36:45,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39651022864019253 [2023-09-01 01:36:45,920 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-09-01 01:36:45,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-09-01 01:36:45,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:45,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-09-01 01:36:45,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:45,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:45,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:45,929 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 63 flow. Second operand 6 states and 1318 transitions. [2023-09-01 01:36:45,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 47 transitions, 241 flow [2023-09-01 01:36:45,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 47 transitions, 237 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-09-01 01:36:45,931 INFO L231 Difference]: Finished difference. Result has 41 places, 21 transitions, 101 flow [2023-09-01 01:36:45,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=41, PETRI_TRANSITIONS=21} [2023-09-01 01:36:45,932 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 2 predicate places. [2023-09-01 01:36:45,932 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 21 transitions, 101 flow [2023-09-01 01:36:45,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:45,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:45,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:45,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 01:36:45,933 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:45,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:45,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1410945388, now seen corresponding path program 3 times [2023-09-01 01:36:45,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:45,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727552091] [2023-09-01 01:36:45,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:45,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:45,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:46,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:46,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727552091] [2023-09-01 01:36:46,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727552091] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:46,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:46,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:46,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173694829] [2023-09-01 01:36:46,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:46,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:46,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:46,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:46,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:47,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 204 out of 554 [2023-09-01 01:36:47,165 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 21 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:47,165 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:47,165 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 204 of 554 [2023-09-01 01:36:47,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:47,510 INFO L130 PetriNetUnfolder]: 32/98 cut-off events. [2023-09-01 01:36:47,512 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-09-01 01:36:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 98 events. 32/98 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 304 event pairs, 2 based on Foata normal form. 1/99 useless extension candidates. Maximal degree in co-relation 312. Up to 46 conditions per place. [2023-09-01 01:36:47,513 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 27 selfloop transitions, 6 changer transitions 11/44 dead transitions. [2023-09-01 01:36:47,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 256 flow [2023-09-01 01:36:47,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:47,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:47,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1268 transitions. [2023-09-01 01:36:47,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.381468110709988 [2023-09-01 01:36:47,518 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1268 transitions. [2023-09-01 01:36:47,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1268 transitions. [2023-09-01 01:36:47,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:47,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1268 transitions. [2023-09-01 01:36:47,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.33333333333334) internal successors, (1268), 6 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:47,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:47,526 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:47,526 INFO L175 Difference]: Start difference. First operand has 41 places, 21 transitions, 101 flow. Second operand 6 states and 1268 transitions. [2023-09-01 01:36:47,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 256 flow [2023-09-01 01:36:47,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 44 transitions, 245 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-09-01 01:36:47,529 INFO L231 Difference]: Finished difference. Result has 45 places, 20 transitions, 108 flow [2023-09-01 01:36:47,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=45, PETRI_TRANSITIONS=20} [2023-09-01 01:36:47,530 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-09-01 01:36:47,530 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 20 transitions, 108 flow [2023-09-01 01:36:47,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 207.2) internal successors, (1036), 5 states have internal predecessors, (1036), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:47,531 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:47,531 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:47,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 01:36:47,531 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:47,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash -180611160, now seen corresponding path program 4 times [2023-09-01 01:36:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849744977] [2023-09-01 01:36:47,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:47,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:48,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:48,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:48,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849744977] [2023-09-01 01:36:48,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849744977] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:48,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:48,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:48,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762034840] [2023-09-01 01:36:48,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:48,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:48,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:48,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:48,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:48,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 207 out of 554 [2023-09-01 01:36:48,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 20 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:48,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:48,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 207 of 554 [2023-09-01 01:36:48,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:49,023 INFO L130 PetriNetUnfolder]: 16/54 cut-off events. [2023-09-01 01:36:49,024 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 01:36:49,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 54 events. 16/54 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 112 event pairs, 1 based on Foata normal form. 1/55 useless extension candidates. Maximal degree in co-relation 199. Up to 20 conditions per place. [2023-09-01 01:36:49,024 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 18 selfloop transitions, 4 changer transitions 10/32 dead transitions. [2023-09-01 01:36:49,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 32 transitions, 201 flow [2023-09-01 01:36:49,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:49,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:49,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1273 transitions. [2023-09-01 01:36:49,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38297232250300844 [2023-09-01 01:36:49,029 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1273 transitions. [2023-09-01 01:36:49,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1273 transitions. [2023-09-01 01:36:49,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:49,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1273 transitions. [2023-09-01 01:36:49,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 212.16666666666666) internal successors, (1273), 6 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,038 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,039 INFO L175 Difference]: Start difference. First operand has 45 places, 20 transitions, 108 flow. Second operand 6 states and 1273 transitions. [2023-09-01 01:36:49,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 32 transitions, 201 flow [2023-09-01 01:36:49,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 180 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-09-01 01:36:49,047 INFO L231 Difference]: Finished difference. Result has 43 places, 18 transitions, 82 flow [2023-09-01 01:36:49,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=82, PETRI_PLACES=43, PETRI_TRANSITIONS=18} [2023-09-01 01:36:49,047 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 4 predicate places. [2023-09-01 01:36:49,048 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 18 transitions, 82 flow [2023-09-01 01:36:49,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 210.2) internal successors, (1051), 5 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:49,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:49,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 01:36:49,061 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:49,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:49,061 INFO L85 PathProgramCache]: Analyzing trace with hash -144084204, now seen corresponding path program 5 times [2023-09-01 01:36:49,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:49,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45158974] [2023-09-01 01:36:49,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:49,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45158974] [2023-09-01 01:36:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45158974] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:49,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:49,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557972384] [2023-09-01 01:36:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:49,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:50,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 554 [2023-09-01 01:36:50,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:50,127 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:50,127 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 554 [2023-09-01 01:36:50,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:50,337 INFO L130 PetriNetUnfolder]: 8/40 cut-off events. [2023-09-01 01:36:50,337 INFO L131 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2023-09-01 01:36:50,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 40 events. 8/40 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 1/41 useless extension candidates. Maximal degree in co-relation 137. Up to 19 conditions per place. [2023-09-01 01:36:50,338 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 15 selfloop transitions, 3 changer transitions 12/30 dead transitions. [2023-09-01 01:36:50,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 30 transitions, 178 flow [2023-09-01 01:36:50,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:50,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:50,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1291 transitions. [2023-09-01 01:36:50,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38838748495788206 [2023-09-01 01:36:50,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1291 transitions. [2023-09-01 01:36:50,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1291 transitions. [2023-09-01 01:36:50,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:50,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1291 transitions. [2023-09-01 01:36:50,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 215.16666666666666) internal successors, (1291), 6 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:50,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:50,354 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:50,354 INFO L175 Difference]: Start difference. First operand has 43 places, 18 transitions, 82 flow. Second operand 6 states and 1291 transitions. [2023-09-01 01:36:50,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 30 transitions, 178 flow [2023-09-01 01:36:50,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 30 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-09-01 01:36:50,357 INFO L231 Difference]: Finished difference. Result has 40 places, 16 transitions, 63 flow [2023-09-01 01:36:50,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=63, PETRI_PLACES=40, PETRI_TRANSITIONS=16} [2023-09-01 01:36:50,358 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 1 predicate places. [2023-09-01 01:36:50,358 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 16 transitions, 63 flow [2023-09-01 01:36:50,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 213.2) internal successors, (1066), 5 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:50,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 01:36:50,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:50,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 01:36:50,359 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-09-01 01:36:50,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 01:36:50,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1062034394, now seen corresponding path program 6 times [2023-09-01 01:36:50,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 01:36:50,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889231977] [2023-09-01 01:36:50,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 01:36:50,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 01:36:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 01:36:51,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 01:36:51,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 01:36:51,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889231977] [2023-09-01 01:36:51,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889231977] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 01:36:51,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 01:36:51,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-09-01 01:36:51,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958739767] [2023-09-01 01:36:51,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 01:36:51,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-09-01 01:36:51,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 01:36:51,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-09-01 01:36:51,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-09-01 01:36:51,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 208 out of 554 [2023-09-01 01:36:51,273 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 16 transitions, 63 flow. Second operand has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,273 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 01:36:51,273 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 208 of 554 [2023-09-01 01:36:51,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 01:36:51,448 INFO L130 PetriNetUnfolder]: 3/21 cut-off events. [2023-09-01 01:36:51,448 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 01:36:51,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 21 events. 3/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 11 event pairs, 0 based on Foata normal form. 1/22 useless extension candidates. Maximal degree in co-relation 70. Up to 8 conditions per place. [2023-09-01 01:36:51,449 INFO L137 encePairwiseOnDemand]: 549/554 looper letters, 0 selfloop transitions, 0 changer transitions 18/18 dead transitions. [2023-09-01 01:36:51,449 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 18 transitions, 101 flow [2023-09-01 01:36:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-09-01 01:36:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-09-01 01:36:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1267 transitions. [2023-09-01 01:36:51,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38116726835138387 [2023-09-01 01:36:51,452 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1267 transitions. [2023-09-01 01:36:51,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1267 transitions. [2023-09-01 01:36:51,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 01:36:51,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1267 transitions. [2023-09-01 01:36:51,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 211.16666666666666) internal successors, (1267), 6 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,460 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 554.0) internal successors, (3878), 7 states have internal predecessors, (3878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,460 INFO L175 Difference]: Start difference. First operand has 40 places, 16 transitions, 63 flow. Second operand 6 states and 1267 transitions. [2023-09-01 01:36:51,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 18 transitions, 101 flow [2023-09-01 01:36:51,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 18 transitions, 88 flow, removed 2 selfloop flow, removed 6 redundant places. [2023-09-01 01:36:51,461 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-09-01 01:36:51,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=554, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-09-01 01:36:51,462 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -3 predicate places. [2023-09-01 01:36:51,462 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-09-01 01:36:51,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 211.2) internal successors, (1056), 5 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 01:36:51,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-09-01 01:36:51,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-09-01 01:36:51,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-09-01 01:36:51,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-09-01 01:36:51,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-09-01 01:36:51,466 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-09-01 01:36:51,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-09-01 01:36:51,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-09-01 01:36:51,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-09-01 01:36:51,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-09-01 01:36:51,467 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-09-01 01:36:51,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 01:36:51,468 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 01:36:51,471 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 01:36:51,471 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 01:36:51,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 01:36:51 BasicIcfg [2023-09-01 01:36:51,474 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 01:36:51,474 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 01:36:51,474 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 01:36:51,474 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 01:36:51,475 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 01:36:31" (3/4) ... [2023-09-01 01:36:51,477 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 01:36:51,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 01:36:51,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 01:36:51,483 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-09-01 01:36:51,487 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-09-01 01:36:51,488 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 01:36:51,488 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 01:36:51,488 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 01:36:51,543 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 01:36:51,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 01:36:51,544 INFO L158 Benchmark]: Toolchain (without parser) took 20937.98ms. Allocated memory was 69.2MB in the beginning and 346.0MB in the end (delta: 276.8MB). Free memory was 47.0MB in the beginning and 283.7MB in the end (delta: -236.7MB). Peak memory consumption was 41.3MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,544 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 01:36:51,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 306.35ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 35.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.32ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,545 INFO L158 Benchmark]: Boogie Preprocessor took 51.93ms. Allocated memory is still 69.2MB. Free memory was 33.1MB in the beginning and 31.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,546 INFO L158 Benchmark]: RCFGBuilder took 602.28ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 29.8MB in the end (delta: 1.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,546 INFO L158 Benchmark]: TraceAbstraction took 19842.70ms. Allocated memory was 69.2MB in the beginning and 346.0MB in the end (delta: 276.8MB). Free memory was 28.9MB in the beginning and 286.8MB in the end (delta: -257.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,546 INFO L158 Benchmark]: Witness Printer took 69.36ms. Allocated memory is still 346.0MB. Free memory was 286.8MB in the beginning and 283.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 01:36:51,548 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 56.6MB. Free memory was 34.3MB in the beginning and 34.2MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 306.35ms. Allocated memory is still 69.2MB. Free memory was 46.8MB in the beginning and 35.4MB in the end (delta: 11.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.32ms. Allocated memory is still 69.2MB. Free memory was 35.2MB in the beginning and 33.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 51.93ms. Allocated memory is still 69.2MB. Free memory was 33.1MB in the beginning and 31.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 602.28ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 29.8MB in the end (delta: 1.6MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * TraceAbstraction took 19842.70ms. Allocated memory was 69.2MB in the beginning and 346.0MB in the end (delta: 276.8MB). Free memory was 28.9MB in the beginning and 286.8MB in the end (delta: -257.9MB). Peak memory consumption was 20.8MB. Max. memory is 16.1GB. * Witness Printer took 69.36ms. Allocated memory is still 346.0MB. Free memory was 286.8MB in the beginning and 283.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.7s, 234 PlacesBefore, 39 PlacesAfterwards, 243 TransitionsBefore, 29 TransitionsAfterwards, 16368 CoEnabledTransitionPairs, 7 FixpointIterations, 86 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 60 ConcurrentYvCompositions, 19 ChoiceCompositions, 304 TotalNumberOfCompositions, 15678 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15678, independent: 15678, independent conditional: 0, independent unconditional: 15678, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9983, independent: 9983, independent conditional: 0, independent unconditional: 9983, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15678, independent: 5695, independent conditional: 0, independent unconditional: 5695, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 9983, unknown conditional: 0, unknown unconditional: 9983] , Statistics on independence cache: Total cache size (in pairs): 36, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 83]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 352 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1902 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1129 mSDsluCounter, 771 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 595 mSDsCounter, 131 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2348 IncrementalHoareTripleChecker+Invalid, 2479 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 131 mSolverCounterUnsat, 176 mSDtfsCounter, 2348 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 2225 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 01:36:51,588 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