./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-time-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 05:18:37,928 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 05:18:37,930 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 05:18:37,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 05:18:37,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 05:18:37,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 05:18:37,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 05:18:37,969 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 05:18:37,971 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 05:18:37,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 05:18:37,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 05:18:37,977 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 05:18:37,977 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 05:18:37,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 05:18:37,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 05:18:37,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 05:18:37,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 05:18:37,986 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 05:18:37,987 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 05:18:37,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 05:18:37,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 05:18:37,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 05:18:37,996 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 05:18:37,996 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 05:18:38,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 05:18:38,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 05:18:38,002 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 05:18:38,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 05:18:38,004 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 05:18:38,005 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 05:18:38,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 05:18:38,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 05:18:38,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 05:18:38,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 05:18:38,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 05:18:38,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 05:18:38,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 05:18:38,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 05:18:38,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 05:18:38,010 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 05:18:38,015 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 05:18:38,017 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 05:18:38,041 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 05:18:38,041 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 05:18:38,042 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 05:18:38,042 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 05:18:38,043 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 05:18:38,043 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 05:18:38,043 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 05:18:38,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 05:18:38,044 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 05:18:38,044 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 05:18:38,044 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 05:18:38,045 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 05:18:38,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 05:18:38,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:18:38,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 05:18:38,047 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 05:18:38,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 05:18:38,048 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 05:18:38,048 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fbdf820325bad974beb5f3994ba78abc0ad853157d83dd91eac05e8acb05e8a2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-30 05:18:38,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 05:18:38,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 05:18:38,327 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 05:18:38,328 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 05:18:38,329 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 05:18:38,330 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2023-08-30 05:18:39,445 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 05:18:39,626 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 05:18:39,627 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2023-08-30 05:18:39,635 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cf20bef/5655931d417b45fbbfeaf6abe01533ed/FLAGd7c9b2ec2 [2023-08-30 05:18:39,648 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1cf20bef/5655931d417b45fbbfeaf6abe01533ed [2023-08-30 05:18:39,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 05:18:39,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 05:18:39,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 05:18:39,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 05:18:39,654 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 05:18:39,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5120eae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39, skipping insertion in model container [2023-08-30 05:18:39,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,660 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 05:18:39,672 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 05:18:39,809 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-time-subst.wvr.c[2879,2892] [2023-08-30 05:18:39,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:18:39,838 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 05:18:39,867 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-time-subst.wvr.c[2879,2892] [2023-08-30 05:18:39,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 05:18:39,876 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:18:39,877 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 05:18:39,881 INFO L208 MainTranslator]: Completed translation [2023-08-30 05:18:39,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39 WrapperNode [2023-08-30 05:18:39,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 05:18:39,882 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 05:18:39,882 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 05:18:39,882 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 05:18:39,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,930 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 223 [2023-08-30 05:18:39,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 05:18:39,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 05:18:39,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 05:18:39,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 05:18:39,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,970 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 05:18:39,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 05:18:39,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 05:18:39,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 05:18:39,977 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (1/1) ... [2023-08-30 05:18:39,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 05:18:39,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 05:18:40,005 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 05:18:40,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 05:18:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 05:18:40,031 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 05:18:40,031 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 05:18:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 05:18:40,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 05:18:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 05:18:40,032 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 05:18:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 05:18:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 05:18:40,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 05:18:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 05:18:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 05:18:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 05:18:40,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 05:18:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 05:18:40,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 05:18:40,034 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 05:18:40,139 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 05:18:40,141 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 05:18:40,452 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 05:18:40,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 05:18:40,661 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 05:18:40,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:40 BoogieIcfgContainer [2023-08-30 05:18:40,663 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 05:18:40,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 05:18:40,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 05:18:40,668 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 05:18:40,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:18:39" (1/3) ... [2023-08-30 05:18:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ccd5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:40, skipping insertion in model container [2023-08-30 05:18:40,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:18:39" (2/3) ... [2023-08-30 05:18:40,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ccd5a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:18:40, skipping insertion in model container [2023-08-30 05:18:40,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:40" (3/3) ... [2023-08-30 05:18:40,676 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2023-08-30 05:18:40,688 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 05:18:40,688 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-30 05:18:40,688 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 05:18:40,739 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 05:18:40,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 130 transitions, 284 flow [2023-08-30 05:18:40,821 INFO L130 PetriNetUnfolder]: 1/127 cut-off events. [2023-08-30 05:18:40,821 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:18:40,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140 conditions, 127 events. 1/127 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2023-08-30 05:18:40,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 130 transitions, 284 flow [2023-08-30 05:18:40,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 123 transitions, 264 flow [2023-08-30 05:18:40,833 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 05:18:40,841 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 123 transitions, 264 flow [2023-08-30 05:18:40,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 123 transitions, 264 flow [2023-08-30 05:18:40,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 123 transitions, 264 flow [2023-08-30 05:18:40,878 INFO L130 PetriNetUnfolder]: 1/123 cut-off events. [2023-08-30 05:18:40,878 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 05:18:40,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136 conditions, 123 events. 1/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 52 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 36. Up to 2 conditions per place. [2023-08-30 05:18:40,880 INFO L119 LiptonReduction]: Number of co-enabled transitions 378 [2023-08-30 05:18:46,077 INFO L134 LiptonReduction]: Checked pairs total: 626 [2023-08-30 05:18:46,077 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-30 05:18:46,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 05:18:46,091 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;@1c23c129, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 05:18:46,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-30 05:18:46,092 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 05:18:46,092 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:46,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:46,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 05:18:46,093 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)] === [2023-08-30 05:18:46,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:46,096 INFO L85 PathProgramCache]: Analyzing trace with hash 791, now seen corresponding path program 1 times [2023-08-30 05:18:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:46,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107327472] [2023-08-30 05:18:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:46,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:46,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:46,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107327472] [2023-08-30 05:18:46,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107327472] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:46,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:46,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 05:18:46,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948433458] [2023-08-30 05:18:46,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:46,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 05:18:46,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:46,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 05:18:46,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 05:18:46,187 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 259 [2023-08-30 05:18:46,189 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 29 transitions, 76 flow. Second operand has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,189 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:46,189 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 259 [2023-08-30 05:18:46,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:46,272 INFO L130 PetriNetUnfolder]: 81/164 cut-off events. [2023-08-30 05:18:46,272 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-30 05:18:46,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 164 events. 81/164 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 464 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. [2023-08-30 05:18:46,276 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 26 selfloop transitions, 0 changer transitions 0/26 dead transitions. [2023-08-30 05:18:46,276 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 26 transitions, 122 flow [2023-08-30 05:18:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 05:18:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 05:18:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 267 transitions. [2023-08-30 05:18:46,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5154440154440154 [2023-08-30 05:18:46,290 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 267 transitions. [2023-08-30 05:18:46,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 267 transitions. [2023-08-30 05:18:46,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:46,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 267 transitions. [2023-08-30 05:18:46,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,301 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 259.0) internal successors, (777), 3 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,302 INFO L175 Difference]: Start difference. First operand has 39 places, 29 transitions, 76 flow. Second operand 2 states and 267 transitions. [2023-08-30 05:18:46,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 26 transitions, 122 flow [2023-08-30 05:18:46,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 05:18:46,306 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 58 flow [2023-08-30 05:18:46,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:46,309 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:18:46,309 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 58 flow [2023-08-30 05:18:46,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 119.5) internal successors, (239), 2 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:46,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:18:46,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 05:18:46,313 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)] === [2023-08-30 05:18:46,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:46,319 INFO L85 PathProgramCache]: Analyzing trace with hash 779320, now seen corresponding path program 1 times [2023-08-30 05:18:46,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:46,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196873807] [2023-08-30 05:18:46,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:46,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:46,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:46,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:46,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196873807] [2023-08-30 05:18:46,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196873807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:46,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:46,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:18:46,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342240115] [2023-08-30 05:18:46,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:46,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:18:46,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:46,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:18:46,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:18:46,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 259 [2023-08-30 05:18:46,553 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 58 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,553 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:46,553 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 259 [2023-08-30 05:18:46,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:46,619 INFO L130 PetriNetUnfolder]: 76/153 cut-off events. [2023-08-30 05:18:46,619 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:46,619 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 420 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. [2023-08-30 05:18:46,620 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-30 05:18:46,620 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 24 transitions, 102 flow [2023-08-30 05:18:46,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:46,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-30 05:18:46,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47361647361647363 [2023-08-30 05:18:46,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-30 05:18:46,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-30 05:18:46,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:46,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-30 05:18:46,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,638 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,642 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,642 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 58 flow. Second operand 3 states and 368 transitions. [2023-08-30 05:18:46,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 24 transitions, 102 flow [2023-08-30 05:18:46,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 24 transitions, 102 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 05:18:46,643 INFO L231 Difference]: Finished difference. Result has 31 places, 24 transitions, 56 flow [2023-08-30 05:18:46,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:46,644 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -8 predicate places. [2023-08-30 05:18:46,644 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 24 transitions, 56 flow [2023-08-30 05:18:46,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:46,645 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 05:18:46,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 05:18:46,645 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)] === [2023-08-30 05:18:46,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:46,647 INFO L85 PathProgramCache]: Analyzing trace with hash 779318, now seen corresponding path program 1 times [2023-08-30 05:18:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:46,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573939415] [2023-08-30 05:18:46,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:46,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:46,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:46,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573939415] [2023-08-30 05:18:46,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573939415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:46,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:46,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:18:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411788432] [2023-08-30 05:18:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:46,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:18:46,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:46,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:18:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:18:46,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 259 [2023-08-30 05:18:46,731 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,731 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:46,731 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 259 [2023-08-30 05:18:46,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:46,777 INFO L130 PetriNetUnfolder]: 71/142 cut-off events. [2023-08-30 05:18:46,777 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:46,778 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 382 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. [2023-08-30 05:18:46,778 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-30 05:18:46,778 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 22 transitions, 96 flow [2023-08-30 05:18:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:46,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:46,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-30 05:18:46,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517374517374517 [2023-08-30 05:18:46,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-30 05:18:46,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-30 05:18:46,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:46,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-30 05:18:46,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,783 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 56 flow. Second operand 3 states and 351 transitions. [2023-08-30 05:18:46,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 22 transitions, 96 flow [2023-08-30 05:18:46,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:46,784 INFO L231 Difference]: Finished difference. Result has 30 places, 22 transitions, 53 flow [2023-08-30 05:18:46,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:46,785 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -9 predicate places. [2023-08-30 05:18:46,785 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 22 transitions, 53 flow [2023-08-30 05:18:46,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:46,787 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:18:46,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 05:18:46,787 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:18:46,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:46,788 INFO L85 PathProgramCache]: Analyzing trace with hash 748945622, now seen corresponding path program 1 times [2023-08-30 05:18:46,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920388992] [2023-08-30 05:18:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:46,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:46,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:46,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920388992] [2023-08-30 05:18:46,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920388992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:46,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:46,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:18:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574660951] [2023-08-30 05:18:46,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:46,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:18:46,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:18:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:18:46,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 259 [2023-08-30 05:18:46,920 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 22 transitions, 53 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,920 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:46,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 259 [2023-08-30 05:18:46,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:46,968 INFO L130 PetriNetUnfolder]: 66/131 cut-off events. [2023-08-30 05:18:46,968 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:46,970 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 341 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. [2023-08-30 05:18:46,972 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-30 05:18:46,972 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 20 transitions, 89 flow [2023-08-30 05:18:46,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:46,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:46,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 349 transitions. [2023-08-30 05:18:46,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4491634491634492 [2023-08-30 05:18:46,976 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 349 transitions. [2023-08-30 05:18:46,976 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 349 transitions. [2023-08-30 05:18:46,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:46,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 349 transitions. [2023-08-30 05:18:46,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,979 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:46,979 INFO L175 Difference]: Start difference. First operand has 30 places, 22 transitions, 53 flow. Second operand 3 states and 349 transitions. [2023-08-30 05:18:46,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 20 transitions, 89 flow [2023-08-30 05:18:46,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 20 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:46,980 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 50 flow [2023-08-30 05:18:46,980 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:46,981 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -10 predicate places. [2023-08-30 05:18:46,981 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 50 flow [2023-08-30 05:18:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:46,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:46,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 05:18:46,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 05:18:46,983 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-08-30 05:18:46,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:46,983 INFO L85 PathProgramCache]: Analyzing trace with hash 748945624, now seen corresponding path program 1 times [2023-08-30 05:18:46,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:46,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275054084] [2023-08-30 05:18:46,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:46,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:47,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:47,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:47,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275054084] [2023-08-30 05:18:47,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275054084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:47,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:47,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 05:18:47,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756016552] [2023-08-30 05:18:47,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:47,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 05:18:47,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:47,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 05:18:47,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 05:18:47,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 259 [2023-08-30 05:18:47,077 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:47,077 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 259 [2023-08-30 05:18:47,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:47,109 INFO L130 PetriNetUnfolder]: 61/120 cut-off events. [2023-08-30 05:18:47,109 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:47,109 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 298 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. [2023-08-30 05:18:47,110 INFO L137 encePairwiseOnDemand]: 256/259 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-30 05:18:47,110 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 82 flow [2023-08-30 05:18:47,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:47,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 350 transitions. [2023-08-30 05:18:47,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2023-08-30 05:18:47,111 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 350 transitions. [2023-08-30 05:18:47,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 350 transitions. [2023-08-30 05:18:47,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:47,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 350 transitions. [2023-08-30 05:18:47,113 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,114 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 50 flow. Second operand 3 states and 350 transitions. [2023-08-30 05:18:47,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 82 flow [2023-08-30 05:18:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 18 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:47,115 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 47 flow [2023-08-30 05:18:47,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:47,116 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:18:47,116 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 47 flow [2023-08-30 05:18:47,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:47,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:47,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 05:18:47,117 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)] === [2023-08-30 05:18:47,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:47,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1817741846, now seen corresponding path program 1 times [2023-08-30 05:18:47,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:47,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698743445] [2023-08-30 05:18:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:47,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:47,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:47,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698743445] [2023-08-30 05:18:47,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698743445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:47,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:47,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 05:18:47,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709263963] [2023-08-30 05:18:47,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:47,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 05:18:47,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:47,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 05:18:47,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 05:18:47,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 259 [2023-08-30 05:18:47,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:47,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 259 [2023-08-30 05:18:47,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:47,331 INFO L130 PetriNetUnfolder]: 49/100 cut-off events. [2023-08-30 05:18:47,331 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:47,331 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. [2023-08-30 05:18:47,331 INFO L137 encePairwiseOnDemand]: 257/259 looper letters, 16 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-08-30 05:18:47,331 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 17 transitions, 79 flow [2023-08-30 05:18:47,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:47,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:47,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-30 05:18:47,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4362934362934363 [2023-08-30 05:18:47,333 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-30 05:18:47,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-30 05:18:47,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:47,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-30 05:18:47,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,335 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,335 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,335 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 47 flow. Second operand 3 states and 339 transitions. [2023-08-30 05:18:47,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 17 transitions, 79 flow [2023-08-30 05:18:47,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 17 transitions, 78 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:47,336 INFO L231 Difference]: Finished difference. Result has 28 places, 17 transitions, 46 flow [2023-08-30 05:18:47,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:47,336 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:18:47,336 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 17 transitions, 46 flow [2023-08-30 05:18:47,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.75) internal successors, (435), 4 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:47,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:47,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 05:18:47,337 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)] === [2023-08-30 05:18:47,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:47,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1817741847, now seen corresponding path program 1 times [2023-08-30 05:18:47,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:47,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694113589] [2023-08-30 05:18:47,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:47,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:47,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:47,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694113589] [2023-08-30 05:18:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694113589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:47,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 05:18:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100152629] [2023-08-30 05:18:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:47,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:47,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:47,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 17 transitions, 46 flow. Second operand has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:47,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:47,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:47,516 INFO L130 PetriNetUnfolder]: 37/80 cut-off events. [2023-08-30 05:18:47,516 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 05:18:47,517 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 149 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. [2023-08-30 05:18:47,517 INFO L137 encePairwiseOnDemand]: 257/259 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-30 05:18:47,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-30 05:18:47,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 05:18:47,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 05:18:47,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 320 transitions. [2023-08-30 05:18:47,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118404118404118 [2023-08-30 05:18:47,518 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 320 transitions. [2023-08-30 05:18:47,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 320 transitions. [2023-08-30 05:18:47,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:47,518 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 320 transitions. [2023-08-30 05:18:47,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,520 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,520 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 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) [2023-08-30 05:18:47,520 INFO L175 Difference]: Start difference. First operand has 28 places, 17 transitions, 46 flow. Second operand 3 states and 320 transitions. [2023-08-30 05:18:47,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-30 05:18:47,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:47,521 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-30 05:18:47,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, 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} [2023-08-30 05:18:47,521 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -11 predicate places. [2023-08-30 05:18:47,521 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-30 05:18:47,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.4) internal successors, (512), 5 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:47,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:47,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:47,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 05:18:47,522 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)] === [2023-08-30 05:18:47,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:47,522 INFO L85 PathProgramCache]: Analyzing trace with hash -990063073, now seen corresponding path program 1 times [2023-08-30 05:18:47,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:47,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072167259] [2023-08-30 05:18:47,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:47,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:48,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:48,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072167259] [2023-08-30 05:18:48,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072167259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:48,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:48,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:48,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983102398] [2023-08-30 05:18:48,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:48,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:48,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:48,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:48,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:48,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:48,652 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:48,652 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:48,652 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:48,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:48,859 INFO L130 PetriNetUnfolder]: 40/106 cut-off events. [2023-08-30 05:18:48,859 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 05:18:48,859 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 341 event pairs, 7 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-30 05:18:48,860 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 28 selfloop transitions, 2 changer transitions 9/39 dead transitions. [2023-08-30 05:18:48,860 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 178 flow [2023-08-30 05:18:48,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:18:48,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:18:48,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2023-08-30 05:18:48,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42084942084942084 [2023-08-30 05:18:48,864 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2023-08-30 05:18:48,864 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2023-08-30 05:18:48,864 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:48,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2023-08-30 05:18:48,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:48,866 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:48,866 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:48,866 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 5 states and 545 transitions. [2023-08-30 05:18:48,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 39 transitions, 178 flow [2023-08-30 05:18:48,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 177 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 05:18:48,867 INFO L231 Difference]: Finished difference. Result has 34 places, 17 transitions, 59 flow [2023-08-30 05:18:48,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=59, PETRI_PLACES=34, PETRI_TRANSITIONS=17} [2023-08-30 05:18:48,870 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -5 predicate places. [2023-08-30 05:18:48,870 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 17 transitions, 59 flow [2023-08-30 05:18:48,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:48,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:48,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:48,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 05:18:48,871 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)] === [2023-08-30 05:18:48,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:48,872 INFO L85 PathProgramCache]: Analyzing trace with hash 749882563, now seen corresponding path program 2 times [2023-08-30 05:18:48,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:48,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891783233] [2023-08-30 05:18:48,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:48,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:49,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:49,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:49,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891783233] [2023-08-30 05:18:49,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891783233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:49,859 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:49,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:49,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727556536] [2023-08-30 05:18:49,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:49,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:49,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:49,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:49,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:49,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:49,907 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 17 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:49,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:49,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:49,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:50,129 INFO L130 PetriNetUnfolder]: 34/110 cut-off events. [2023-08-30 05:18:50,129 INFO L131 PetriNetUnfolder]: For 80/80 co-relation queries the response was YES. [2023-08-30 05:18:50,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 110 events. 34/110 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 376 event pairs, 11 based on Foata normal form. 1/111 useless extension candidates. Maximal degree in co-relation 293. Up to 54 conditions per place. [2023-08-30 05:18:50,129 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 28 selfloop transitions, 3 changer transitions 7/38 dead transitions. [2023-08-30 05:18:50,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 38 transitions, 195 flow [2023-08-30 05:18:50,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:18:50,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:18:50,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2023-08-30 05:18:50,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193050193050193 [2023-08-30 05:18:50,131 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2023-08-30 05:18:50,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2023-08-30 05:18:50,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:50,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2023-08-30 05:18:50,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:50,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:50,134 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:50,134 INFO L175 Difference]: Start difference. First operand has 34 places, 17 transitions, 59 flow. Second operand 5 states and 543 transitions. [2023-08-30 05:18:50,134 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 38 transitions, 195 flow [2023-08-30 05:18:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 38 transitions, 188 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-30 05:18:50,135 INFO L231 Difference]: Finished difference. Result has 38 places, 18 transitions, 76 flow [2023-08-30 05:18:50,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=18} [2023-08-30 05:18:50,136 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -1 predicate places. [2023-08-30 05:18:50,136 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 18 transitions, 76 flow [2023-08-30 05:18:50,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:50,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:50,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:50,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 05:18:50,137 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)] === [2023-08-30 05:18:50,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:50,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1919322761, now seen corresponding path program 3 times [2023-08-30 05:18:50,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:50,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [867553181] [2023-08-30 05:18:50,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:50,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:50,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:50,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:50,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [867553181] [2023-08-30 05:18:50,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [867553181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:50,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:50,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:50,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045488625] [2023-08-30 05:18:50,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:50,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:50,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:50,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:50,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:50,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:50,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 18 transitions, 76 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:50,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:50,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:50,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:51,051 INFO L130 PetriNetUnfolder]: 35/115 cut-off events. [2023-08-30 05:18:51,051 INFO L131 PetriNetUnfolder]: For 208/208 co-relation queries the response was YES. [2023-08-30 05:18:51,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 115 events. 35/115 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 434 event pairs, 10 based on Foata normal form. 1/116 useless extension candidates. Maximal degree in co-relation 365. Up to 62 conditions per place. [2023-08-30 05:18:51,051 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 26 selfloop transitions, 2 changer transitions 11/39 dead transitions. [2023-08-30 05:18:51,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 223 flow [2023-08-30 05:18:51,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:18:51,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:18:51,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2023-08-30 05:18:51,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4193050193050193 [2023-08-30 05:18:51,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2023-08-30 05:18:51,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2023-08-30 05:18:51,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:51,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2023-08-30 05:18:51,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:51,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:51,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:51,056 INFO L175 Difference]: Start difference. First operand has 38 places, 18 transitions, 76 flow. Second operand 5 states and 543 transitions. [2023-08-30 05:18:51,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 223 flow [2023-08-30 05:18:51,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 212 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-30 05:18:51,058 INFO L231 Difference]: Finished difference. Result has 42 places, 18 transitions, 83 flow [2023-08-30 05:18:51,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=42, PETRI_TRANSITIONS=18} [2023-08-30 05:18:51,058 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 3 predicate places. [2023-08-30 05:18:51,059 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 18 transitions, 83 flow [2023-08-30 05:18:51,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:51,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:51,059 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:51,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 05:18:51,059 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)] === [2023-08-30 05:18:51,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:51,060 INFO L85 PathProgramCache]: Analyzing trace with hash -887155893, now seen corresponding path program 4 times [2023-08-30 05:18:51,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:51,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407944544] [2023-08-30 05:18:51,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:51,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:52,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:52,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:52,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407944544] [2023-08-30 05:18:52,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407944544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:52,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:52,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 05:18:52,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820130987] [2023-08-30 05:18:52,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:52,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 05:18:52,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:52,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 05:18:52,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-30 05:18:52,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 259 [2023-08-30 05:18:52,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 18 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:52,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:52,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 259 [2023-08-30 05:18:52,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:52,448 INFO L130 PetriNetUnfolder]: 28/94 cut-off events. [2023-08-30 05:18:52,448 INFO L131 PetriNetUnfolder]: For 304/304 co-relation queries the response was YES. [2023-08-30 05:18:52,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 343 conditions, 94 events. 28/94 cut-off events. For 304/304 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 281 event pairs, 16 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 332. Up to 51 conditions per place. [2023-08-30 05:18:52,448 INFO L137 encePairwiseOnDemand]: 254/259 looper letters, 27 selfloop transitions, 4 changer transitions 9/40 dead transitions. [2023-08-30 05:18:52,448 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 243 flow [2023-08-30 05:18:52,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 05:18:52,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 05:18:52,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 584 transitions. [2023-08-30 05:18:52,450 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3758043758043758 [2023-08-30 05:18:52,450 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 584 transitions. [2023-08-30 05:18:52,450 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 584 transitions. [2023-08-30 05:18:52,451 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:52,451 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 584 transitions. [2023-08-30 05:18:52,452 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:52,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:52,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 259.0) internal successors, (1813), 7 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:52,453 INFO L175 Difference]: Start difference. First operand has 42 places, 18 transitions, 83 flow. Second operand 6 states and 584 transitions. [2023-08-30 05:18:52,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 243 flow [2023-08-30 05:18:52,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 224 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-30 05:18:52,455 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 92 flow [2023-08-30 05:18:52,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=92, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-08-30 05:18:52,456 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-30 05:18:52,456 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 92 flow [2023-08-30 05:18:52,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 93.66666666666667) internal successors, (562), 6 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:52,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:52,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 05:18:52,457 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)] === [2023-08-30 05:18:52,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1162682863, now seen corresponding path program 5 times [2023-08-30 05:18:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083140417] [2023-08-30 05:18:52,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:52,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:53,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:53,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:53,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083140417] [2023-08-30 05:18:53,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083140417] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:53,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:53,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:53,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137697664] [2023-08-30 05:18:53,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:53,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:53,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:53,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:53,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:53,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:53,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:53,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:53,239 INFO L130 PetriNetUnfolder]: 21/69 cut-off events. [2023-08-30 05:18:53,239 INFO L131 PetriNetUnfolder]: For 225/225 co-relation queries the response was YES. [2023-08-30 05:18:53,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274 conditions, 69 events. 21/69 cut-off events. For 225/225 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 165 event pairs, 7 based on Foata normal form. 1/70 useless extension candidates. Maximal degree in co-relation 263. Up to 29 conditions per place. [2023-08-30 05:18:53,239 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 18 selfloop transitions, 1 changer transitions 18/37 dead transitions. [2023-08-30 05:18:53,239 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 37 transitions, 218 flow [2023-08-30 05:18:53,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:18:53,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:18:53,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-08-30 05:18:53,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41853281853281854 [2023-08-30 05:18:53,241 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-08-30 05:18:53,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-08-30 05:18:53,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:53,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-08-30 05:18:53,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:53,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:53,245 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:53,245 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 92 flow. Second operand 5 states and 542 transitions. [2023-08-30 05:18:53,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 37 transitions, 218 flow [2023-08-30 05:18:53,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 37 transitions, 204 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-30 05:18:53,246 INFO L231 Difference]: Finished difference. Result has 45 places, 16 transitions, 69 flow [2023-08-30 05:18:53,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=39, 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=5, PETRI_FLOW=69, PETRI_PLACES=45, PETRI_TRANSITIONS=16} [2023-08-30 05:18:53,247 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, 6 predicate places. [2023-08-30 05:18:53,247 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 16 transitions, 69 flow [2023-08-30 05:18:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:53,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 05:18:53,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:53,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 05:18:53,248 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)] === [2023-08-30 05:18:53,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 05:18:53,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1467455163, now seen corresponding path program 6 times [2023-08-30 05:18:53,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 05:18:53,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345031808] [2023-08-30 05:18:53,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 05:18:53,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 05:18:53,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 05:18:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 05:18:53,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 05:18:53,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345031808] [2023-08-30 05:18:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345031808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 05:18:53,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 05:18:53,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 05:18:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074958273] [2023-08-30 05:18:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 05:18:53,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 05:18:53,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 05:18:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 05:18:53,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-30 05:18:54,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 259 [2023-08-30 05:18:54,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 16 transitions, 69 flow. Second operand has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:54,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 05:18:54,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 259 [2023-08-30 05:18:54,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 05:18:54,265 INFO L130 PetriNetUnfolder]: 10/38 cut-off events. [2023-08-30 05:18:54,265 INFO L131 PetriNetUnfolder]: For 91/91 co-relation queries the response was YES. [2023-08-30 05:18:54,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 38 events. 10/38 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 5 based on Foata normal form. 1/39 useless extension candidates. Maximal degree in co-relation 141. Up to 21 conditions per place. [2023-08-30 05:18:54,265 INFO L137 encePairwiseOnDemand]: 255/259 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-30 05:18:54,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 23 transitions, 135 flow [2023-08-30 05:18:54,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 05:18:54,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 05:18:54,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 529 transitions. [2023-08-30 05:18:54,267 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084942084942085 [2023-08-30 05:18:54,267 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 529 transitions. [2023-08-30 05:18:54,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 529 transitions. [2023-08-30 05:18:54,267 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 05:18:54,267 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 529 transitions. [2023-08-30 05:18:54,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 105.8) internal successors, (529), 5 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:54,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:54,270 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 259.0) internal successors, (1554), 6 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:54,270 INFO L175 Difference]: Start difference. First operand has 45 places, 16 transitions, 69 flow. Second operand 5 states and 529 transitions. [2023-08-30 05:18:54,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 23 transitions, 135 flow [2023-08-30 05:18:54,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 117 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 05:18:54,270 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-30 05:18:54,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=5, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-30 05:18:54,271 INFO L281 CegarLoopForPetriNet]: 39 programPoint places, -2 predicate places. [2023-08-30 05:18:54,271 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-30 05:18:54,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.2) internal successors, (521), 5 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 05:18:54,273 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-08-30 05:18:54,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-08-30 05:18:54,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-08-30 05:18:54,275 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-08-30 05:18:54,276 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-08-30 05:18:54,277 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-08-30 05:18:54,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 05:18:54,278 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 05:18:54,279 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 05:18:54,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 05:18:54,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:18:54 BasicIcfg [2023-08-30 05:18:54,283 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 05:18:54,284 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 05:18:54,284 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 05:18:54,284 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 05:18:54,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:18:40" (3/4) ... [2023-08-30 05:18:54,286 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 05:18:54,289 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 05:18:54,289 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 05:18:54,289 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 05:18:54,294 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-08-30 05:18:54,294 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 05:18:54,294 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 05:18:54,294 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 05:18:54,323 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 05:18:54,324 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 05:18:54,324 INFO L158 Benchmark]: Toolchain (without parser) took 14673.33ms. Allocated memory was 62.9MB in the beginning and 394.3MB in the end (delta: 331.4MB). Free memory was 41.5MB in the beginning and 199.1MB in the end (delta: -157.6MB). Peak memory consumption was 175.7MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,324 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 49.6kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 05:18:54,324 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.76ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 30.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,325 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.25ms. Allocated memory is still 62.9MB. Free memory was 29.8MB in the beginning and 27.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,325 INFO L158 Benchmark]: Boogie Preprocessor took 44.09ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 27.5MB in the beginning and 55.6MB in the end (delta: -28.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,325 INFO L158 Benchmark]: RCFGBuilder took 687.67ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 31.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,325 INFO L158 Benchmark]: TraceAbstraction took 13617.99ms. Allocated memory was 75.5MB in the beginning and 394.3MB in the end (delta: 318.8MB). Free memory was 30.8MB in the beginning and 202.2MB in the end (delta: -171.5MB). Peak memory consumption was 148.2MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,326 INFO L158 Benchmark]: Witness Printer took 39.91ms. Allocated memory is still 394.3MB. Free memory was 202.2MB in the beginning and 199.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 05:18:54,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 62.9MB. Free memory was 40.9MB in the beginning and 40.8MB in the end (delta: 49.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 229.76ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 30.0MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.25ms. Allocated memory is still 62.9MB. Free memory was 29.8MB in the beginning and 27.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.09ms. Allocated memory was 62.9MB in the beginning and 75.5MB in the end (delta: 12.6MB). Free memory was 27.5MB in the beginning and 55.6MB in the end (delta: -28.1MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * RCFGBuilder took 687.67ms. Allocated memory is still 75.5MB. Free memory was 55.6MB in the beginning and 31.1MB in the end (delta: 24.4MB). Peak memory consumption was 25.9MB. Max. memory is 16.1GB. * TraceAbstraction took 13617.99ms. Allocated memory was 75.5MB in the beginning and 394.3MB in the end (delta: 318.8MB). Free memory was 30.8MB in the beginning and 202.2MB in the end (delta: -171.5MB). Peak memory consumption was 148.2MB. Max. memory is 16.1GB. * Witness Printer took 39.91ms. Allocated memory is still 394.3MB. Free memory was 202.2MB in the beginning and 199.1MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 132 PlacesBefore, 39 PlacesAfterwards, 123 TransitionsBefore, 29 TransitionsAfterwards, 378 CoEnabledTransitionPairs, 7 FixpointIterations, 93 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 129 TotalNumberOfCompositions, 626 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 626, independent: 626, independent conditional: 0, independent unconditional: 626, 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: 228, independent: 228, independent conditional: 0, independent unconditional: 228, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 626, independent: 398, independent conditional: 0, independent unconditional: 398, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 228, unknown conditional: 0, unknown unconditional: 228] , 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: 93]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 70]: 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, 145 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: 13.5s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1028 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 576 mSDsluCounter, 491 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 384 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1522 IncrementalHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 107 mSDtfsCounter, 1522 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=11, InterpolantAutomatonStates: 51, 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, 5.2s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 3971 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! [2023-08-30 05:18:54,353 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