./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/test-easy6.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 e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 01:16:59,653 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 01:16:59,655 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 01:16:59,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 01:16:59,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 01:16:59,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 01:16:59,699 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 01:16:59,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 01:16:59,702 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 01:16:59,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 01:16:59,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 01:16:59,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 01:16:59,708 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 01:16:59,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 01:16:59,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 01:16:59,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 01:16:59,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 01:16:59,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 01:16:59,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 01:16:59,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 01:16:59,742 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 01:16:59,743 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 01:16:59,744 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 01:16:59,745 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 01:16:59,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 01:16:59,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 01:16:59,752 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 01:16:59,753 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 01:16:59,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 01:16:59,755 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 01:16:59,755 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 01:16:59,757 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 01:16:59,758 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 01:16:59,759 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 01:16:59,760 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 01:16:59,760 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 01:16:59,760 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 01:16:59,761 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 01:16:59,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 01:16:59,762 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 01:16:59,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 01:16:59,764 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-30 01:16:59,797 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 01:16:59,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 01:16:59,798 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 01:16:59,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 01:16:59,799 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 01:16:59,800 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 01:16:59,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 01:16:59,800 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 01:16:59,801 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 01:16:59,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 01:16:59,802 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 01:16:59,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-30 01:16:59,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 01:16:59,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 01:16:59,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 01:16:59,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-30 01:16:59,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-30 01:16:59,803 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-30 01:16:59,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 01:16:59,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-30 01:16:59,804 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 01:16:59,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 01:16:59,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 01:16:59,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 01:16:59,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 01:16:59,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:16:59,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 01:16:59,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 01:16:59,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 01:16:59,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 01:16:59,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 01:16:59,806 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 01:16:59,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 01:16:59,806 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 01:16:59,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e29a676a5171b2e56cc2900cb5470509b7d8cacfca71c5e2d0aea36c369ff26e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 01:17:00,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 01:17:00,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 01:17:00,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 01:17:00,180 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 01:17:00,181 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 01:17:00,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 01:17:01,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 01:17:01,720 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 01:17:01,721 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy6.wvr.c [2023-08-30 01:17:01,726 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b33a72f/78488c70561d48409b4095a106c1f764/FLAG456864395 [2023-08-30 01:17:01,737 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51b33a72f/78488c70561d48409b4095a106c1f764 [2023-08-30 01:17:01,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 01:17:01,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 01:17:01,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 01:17:01,741 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 01:17:01,744 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 01:17:01,745 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:01,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ce35587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01, skipping insertion in model container [2023-08-30 01:17:01,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:01,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 01:17:01,773 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 01:17:01,935 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/test-easy6.wvr.c[3046,3059] [2023-08-30 01:17:01,941 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:17:01,953 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 01:17:01,971 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/test-easy6.wvr.c[3046,3059] [2023-08-30 01:17:01,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 01:17:01,990 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:17:01,991 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 01:17:01,997 INFO L208 MainTranslator]: Completed translation [2023-08-30 01:17:01,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01 WrapperNode [2023-08-30 01:17:01,998 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 01:17:01,999 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 01:17:01,999 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 01:17:01,999 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 01:17:02,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,026 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,057 INFO L138 Inliner]: procedures = 21, calls = 59, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 123 [2023-08-30 01:17:02,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 01:17:02,058 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 01:17:02,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 01:17:02,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 01:17:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,085 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,090 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,095 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,103 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 01:17:02,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 01:17:02,107 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 01:17:02,107 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 01:17:02,108 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (1/1) ... [2023-08-30 01:17:02,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 01:17:02,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 01:17:02,151 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 01:17:02,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 01:17:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 01:17:02,184 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 01:17:02,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 01:17:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 01:17:02,185 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 01:17:02,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 01:17:02,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 01:17:02,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 01:17:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 01:17:02,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 01:17:02,188 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 01:17:02,298 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 01:17:02,300 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 01:17:02,556 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 01:17:02,631 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 01:17:02,634 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 01:17:02,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:17:02 BoogieIcfgContainer [2023-08-30 01:17:02,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 01:17:02,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 01:17:02,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 01:17:02,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 01:17:02,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 01:17:01" (1/3) ... [2023-08-30 01:17:02,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5131a7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:17:02, skipping insertion in model container [2023-08-30 01:17:02,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 01:17:01" (2/3) ... [2023-08-30 01:17:02,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5131a7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 01:17:02, skipping insertion in model container [2023-08-30 01:17:02,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:17:02" (3/3) ... [2023-08-30 01:17:02,649 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy6.wvr.c [2023-08-30 01:17:02,664 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 01:17:02,664 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-30 01:17:02,665 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 01:17:02,721 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-30 01:17:02,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 90 transitions, 196 flow [2023-08-30 01:17:02,796 INFO L130 PetriNetUnfolder]: 1/88 cut-off events. [2023-08-30 01:17:02,796 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:02,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 88 events. 1/88 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 72 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 37. Up to 2 conditions per place. [2023-08-30 01:17:02,800 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 90 transitions, 196 flow [2023-08-30 01:17:02,804 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 84 transitions, 180 flow [2023-08-30 01:17:02,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 01:17:02,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 84 transitions, 180 flow [2023-08-30 01:17:02,815 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 84 transitions, 180 flow [2023-08-30 01:17:02,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 84 transitions, 180 flow [2023-08-30 01:17:02,840 INFO L130 PetriNetUnfolder]: 1/84 cut-off events. [2023-08-30 01:17:02,840 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:02,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93 conditions, 84 events. 1/84 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 71 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-08-30 01:17:02,842 INFO L119 LiptonReduction]: Number of co-enabled transitions 748 [2023-08-30 01:17:05,240 INFO L134 LiptonReduction]: Checked pairs total: 4687 [2023-08-30 01:17:05,241 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-08-30 01:17:05,255 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 01:17:05,261 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;@7463a37d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 01:17:05,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-08-30 01:17:05,263 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-30 01:17:05,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 01:17:05,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:05,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-30 01:17:05,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:05,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:05,270 INFO L85 PathProgramCache]: Analyzing trace with hash 365, now seen corresponding path program 1 times [2023-08-30 01:17:05,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:05,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530591629] [2023-08-30 01:17:05,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:05,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:05,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:05,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:05,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530591629] [2023-08-30 01:17:05,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530591629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:05,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:05,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-30 01:17:05,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441725552] [2023-08-30 01:17:05,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:05,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-30 01:17:05,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-30 01:17:05,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-30 01:17:05,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 153 [2023-08-30 01:17:05,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 84 flow. Second operand has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:05,397 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 153 [2023-08-30 01:17:05,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:05,469 INFO L130 PetriNetUnfolder]: 105/272 cut-off events. [2023-08-30 01:17:05,469 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-30 01:17:05,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 272 events. 105/272 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1348 event pairs, 105 based on Foata normal form. 0/202 useless extension candidates. Maximal degree in co-relation 420. Up to 205 conditions per place. [2023-08-30 01:17:05,474 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 21 selfloop transitions, 0 changer transitions 0/33 dead transitions. [2023-08-30 01:17:05,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 120 flow [2023-08-30 01:17:05,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-30 01:17:05,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-30 01:17:05,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 184 transitions. [2023-08-30 01:17:05,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6013071895424836 [2023-08-30 01:17:05,489 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 184 transitions. [2023-08-30 01:17:05,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 184 transitions. [2023-08-30 01:17:05,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:05,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 184 transitions. [2023-08-30 01:17:05,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 92.0) internal successors, (184), 2 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,504 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,506 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 84 flow. Second operand 2 states and 184 transitions. [2023-08-30 01:17:05,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 120 flow [2023-08-30 01:17:05,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 112 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-30 01:17:05,513 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 70 flow [2023-08-30 01:17:05,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=70, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-30 01:17:05,519 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-08-30 01:17:05,520 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 70 flow [2023-08-30 01:17:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 80.5) internal successors, (161), 2 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:05,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:17:05,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 01:17:05,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:05,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:05,526 INFO L85 PathProgramCache]: Analyzing trace with hash 361409, now seen corresponding path program 1 times [2023-08-30 01:17:05,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:05,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858975194] [2023-08-30 01:17:05,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:05,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:05,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:05,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:05,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858975194] [2023-08-30 01:17:05,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858975194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:05,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:05,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:17:05,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601108234] [2023-08-30 01:17:05,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:05,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:17:05,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:05,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:17:05,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:17:05,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 153 [2023-08-30 01:17:05,812 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:05,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 153 [2023-08-30 01:17:05,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:05,882 INFO L130 PetriNetUnfolder]: 99/256 cut-off events. [2023-08-30 01:17:05,883 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:05,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 256 events. 99/256 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1259 event pairs, 99 based on Foata normal form. 0/195 useless extension candidates. Maximal degree in co-relation 451. Up to 190 conditions per place. [2023-08-30 01:17:05,889 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 18 selfloop transitions, 1 changer transitions 0/31 dead transitions. [2023-08-30 01:17:05,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 31 transitions, 104 flow [2023-08-30 01:17:05,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:17:05,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:17:05,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 246 transitions. [2023-08-30 01:17:05,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359477124183006 [2023-08-30 01:17:05,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 246 transitions. [2023-08-30 01:17:05,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 246 transitions. [2023-08-30 01:17:05,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:05,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 246 transitions. [2023-08-30 01:17:05,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.0) internal successors, (246), 3 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,901 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,901 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 70 flow. Second operand 3 states and 246 transitions. [2023-08-30 01:17:05,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 31 transitions, 104 flow [2023-08-30 01:17:05,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 31 transitions, 104 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 01:17:05,902 INFO L231 Difference]: Finished difference. Result has 37 places, 31 transitions, 68 flow [2023-08-30 01:17:05,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=37, PETRI_TRANSITIONS=31} [2023-08-30 01:17:05,903 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -6 predicate places. [2023-08-30 01:17:05,904 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 31 transitions, 68 flow [2023-08-30 01:17:05,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:05,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:05,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-30 01:17:05,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 01:17:05,912 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:05,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 361408, now seen corresponding path program 1 times [2023-08-30 01:17:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:05,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335424961] [2023-08-30 01:17:05,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:05,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:05,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:05,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:05,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335424961] [2023-08-30 01:17:05,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335424961] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:05,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:05,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 01:17:05,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111550471] [2023-08-30 01:17:06,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:06,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:17:06,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:06,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:17:06,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:17:06,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 153 [2023-08-30 01:17:06,044 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 31 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,045 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:06,045 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 153 [2023-08-30 01:17:06,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:06,103 INFO L130 PetriNetUnfolder]: 93/240 cut-off events. [2023-08-30 01:17:06,103 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:06,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 240 events. 93/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1139 event pairs, 93 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 422. Up to 176 conditions per place. [2023-08-30 01:17:06,105 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 16 selfloop transitions, 1 changer transitions 0/29 dead transitions. [2023-08-30 01:17:06,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 29 transitions, 98 flow [2023-08-30 01:17:06,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:17:06,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:17:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 232 transitions. [2023-08-30 01:17:06,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-08-30 01:17:06,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 232 transitions. [2023-08-30 01:17:06,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 232 transitions. [2023-08-30 01:17:06,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:06,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 232 transitions. [2023-08-30 01:17:06,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,111 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,111 INFO L175 Difference]: Start difference. First operand has 37 places, 31 transitions, 68 flow. Second operand 3 states and 232 transitions. [2023-08-30 01:17:06,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 29 transitions, 98 flow [2023-08-30 01:17:06,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 97 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:06,112 INFO L231 Difference]: Finished difference. Result has 36 places, 29 transitions, 65 flow [2023-08-30 01:17:06,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=36, PETRI_TRANSITIONS=29} [2023-08-30 01:17:06,114 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 01:17:06,117 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 29 transitions, 65 flow [2023-08-30 01:17:06,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.0) internal successors, (216), 3 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:06,118 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:17:06,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 01:17:06,118 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:06,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:06,120 INFO L85 PathProgramCache]: Analyzing trace with hash 347320779, now seen corresponding path program 1 times [2023-08-30 01:17:06,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:06,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032182921] [2023-08-30 01:17:06,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:06,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:06,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:06,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032182921] [2023-08-30 01:17:06,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032182921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:06,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:06,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:17:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408629668] [2023-08-30 01:17:06,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:17:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:17:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:17:06,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 01:17:06,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 29 transitions, 65 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:06,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 01:17:06,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:06,380 INFO L130 PetriNetUnfolder]: 69/188 cut-off events. [2023-08-30 01:17:06,380 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:06,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 188 events. 69/188 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 798 event pairs, 69 based on Foata normal form. 0/157 useless extension candidates. Maximal degree in co-relation 331. Up to 136 conditions per place. [2023-08-30 01:17:06,382 INFO L137 encePairwiseOnDemand]: 151/153 looper letters, 15 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-30 01:17:06,382 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 28 transitions, 95 flow [2023-08-30 01:17:06,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:17:06,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:17:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 236 transitions. [2023-08-30 01:17:06,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.514161220043573 [2023-08-30 01:17:06,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 236 transitions. [2023-08-30 01:17:06,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 236 transitions. [2023-08-30 01:17:06,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:06,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 236 transitions. [2023-08-30 01:17:06,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,387 INFO L175 Difference]: Start difference. First operand has 36 places, 29 transitions, 65 flow. Second operand 3 states and 236 transitions. [2023-08-30 01:17:06,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 28 transitions, 95 flow [2023-08-30 01:17:06,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 28 transitions, 94 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:06,389 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 64 flow [2023-08-30 01:17:06,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-08-30 01:17:06,391 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 01:17:06,391 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 64 flow [2023-08-30 01:17:06,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:06,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-30 01:17:06,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 01:17:06,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:06,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:06,393 INFO L85 PathProgramCache]: Analyzing trace with hash 347320778, now seen corresponding path program 1 times [2023-08-30 01:17:06,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:06,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007244160] [2023-08-30 01:17:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:06,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:06,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:06,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:06,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007244160] [2023-08-30 01:17:06,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007244160] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:06,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:06,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 01:17:06,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635451742] [2023-08-30 01:17:06,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:06,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 01:17:06,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:06,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 01:17:06,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 01:17:06,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 153 [2023-08-30 01:17:06,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 64 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:06,521 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 153 [2023-08-30 01:17:06,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:06,553 INFO L130 PetriNetUnfolder]: 45/136 cut-off events. [2023-08-30 01:17:06,554 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 01:17:06,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 136 events. 45/136 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 518 event pairs, 45 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 240. Up to 96 conditions per place. [2023-08-30 01:17:06,555 INFO L137 encePairwiseOnDemand]: 151/153 looper letters, 14 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2023-08-30 01:17:06,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 27 transitions, 92 flow [2023-08-30 01:17:06,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:17:06,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:17:06,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 217 transitions. [2023-08-30 01:17:06,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47276688453159044 [2023-08-30 01:17:06,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 217 transitions. [2023-08-30 01:17:06,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 217 transitions. [2023-08-30 01:17:06,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:06,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 217 transitions. [2023-08-30 01:17:06,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,559 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,559 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 64 flow. Second operand 3 states and 217 transitions. [2023-08-30 01:17:06,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 27 transitions, 92 flow [2023-08-30 01:17:06,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 27 transitions, 91 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:06,561 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 63 flow [2023-08-30 01:17:06,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-30 01:17:06,564 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -7 predicate places. [2023-08-30 01:17:06,564 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 63 flow [2023-08-30 01:17:06,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:06,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:06,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 01:17:06,565 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:06,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:06,566 INFO L85 PathProgramCache]: Analyzing trace with hash -546551339, now seen corresponding path program 1 times [2023-08-30 01:17:06,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:06,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525099705] [2023-08-30 01:17:06,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:06,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:06,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:06,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:06,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525099705] [2023-08-30 01:17:06,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525099705] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:06,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:06,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:17:06,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542261119] [2023-08-30 01:17:06,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:06,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:06,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:06,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:06,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:06,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 01:17:06,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 63 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,810 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:06,810 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 01:17:06,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:06,955 INFO L130 PetriNetUnfolder]: 133/295 cut-off events. [2023-08-30 01:17:06,955 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-30 01:17:06,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 295 events. 133/295 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1169 event pairs, 39 based on Foata normal form. 1/287 useless extension candidates. Maximal degree in co-relation 589. Up to 80 conditions per place. [2023-08-30 01:17:06,957 INFO L137 encePairwiseOnDemand]: 147/153 looper letters, 34 selfloop transitions, 6 changer transitions 16/64 dead transitions. [2023-08-30 01:17:06,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 64 transitions, 257 flow [2023-08-30 01:17:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:17:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:17:06,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 568 transitions. [2023-08-30 01:17:06,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5303454715219421 [2023-08-30 01:17:06,960 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 568 transitions. [2023-08-30 01:17:06,960 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 568 transitions. [2023-08-30 01:17:06,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:06,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 568 transitions. [2023-08-30 01:17:06,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.14285714285714) internal successors, (568), 7 states have internal predecessors, (568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,964 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,964 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 63 flow. Second operand 7 states and 568 transitions. [2023-08-30 01:17:06,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 64 transitions, 257 flow [2023-08-30 01:17:06,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 64 transitions, 256 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:06,966 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 97 flow [2023-08-30 01:17:06,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-08-30 01:17:06,967 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-08-30 01:17:06,967 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 97 flow [2023-08-30 01:17:06,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:06,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:06,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:06,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 01:17:06,969 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:06,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:06,969 INFO L85 PathProgramCache]: Analyzing trace with hash 909761877, now seen corresponding path program 2 times [2023-08-30 01:17:06,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:06,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523399682] [2023-08-30 01:17:06,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:06,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:07,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:07,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:07,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523399682] [2023-08-30 01:17:07,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523399682] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:07,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:07,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 01:17:07,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824328808] [2023-08-30 01:17:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:07,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:07,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 01:17:07,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 97 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:07,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 01:17:07,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:07,301 INFO L130 PetriNetUnfolder]: 204/536 cut-off events. [2023-08-30 01:17:07,302 INFO L131 PetriNetUnfolder]: For 44/44 co-relation queries the response was YES. [2023-08-30 01:17:07,303 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1074 conditions, 536 events. 204/536 cut-off events. For 44/44 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2923 event pairs, 22 based on Foata normal form. 6/535 useless extension candidates. Maximal degree in co-relation 1067. Up to 91 conditions per place. [2023-08-30 01:17:07,305 INFO L137 encePairwiseOnDemand]: 145/153 looper letters, 41 selfloop transitions, 11 changer transitions 13/77 dead transitions. [2023-08-30 01:17:07,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 326 flow [2023-08-30 01:17:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 01:17:07,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 01:17:07,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 696 transitions. [2023-08-30 01:17:07,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5054466230936819 [2023-08-30 01:17:07,307 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 696 transitions. [2023-08-30 01:17:07,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 696 transitions. [2023-08-30 01:17:07,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:07,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 696 transitions. [2023-08-30 01:17:07,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 77.33333333333333) internal successors, (696), 9 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,312 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 153.0) internal successors, (1530), 10 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,313 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 97 flow. Second operand 9 states and 696 transitions. [2023-08-30 01:17:07,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 326 flow [2023-08-30 01:17:07,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 77 transitions, 322 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:07,316 INFO L231 Difference]: Finished difference. Result has 55 places, 39 transitions, 169 flow [2023-08-30 01:17:07,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=169, PETRI_PLACES=55, PETRI_TRANSITIONS=39} [2023-08-30 01:17:07,317 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-08-30 01:17:07,317 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 39 transitions, 169 flow [2023-08-30 01:17:07,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:07,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:07,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 01:17:07,318 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:07,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:07,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1968690479, now seen corresponding path program 3 times [2023-08-30 01:17:07,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:07,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612439268] [2023-08-30 01:17:07,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:07,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:07,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:07,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:07,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612439268] [2023-08-30 01:17:07,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612439268] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:07,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:07,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 01:17:07,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303910717] [2023-08-30 01:17:07,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:07,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:07,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:07,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:07,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:07,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 153 [2023-08-30 01:17:07,463 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 39 transitions, 169 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,463 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:07,463 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 153 [2023-08-30 01:17:07,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:07,638 INFO L130 PetriNetUnfolder]: 237/528 cut-off events. [2023-08-30 01:17:07,639 INFO L131 PetriNetUnfolder]: For 377/381 co-relation queries the response was YES. [2023-08-30 01:17:07,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 528 events. 237/528 cut-off events. For 377/381 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 2541 event pairs, 86 based on Foata normal form. 4/517 useless extension candidates. Maximal degree in co-relation 1462. Up to 161 conditions per place. [2023-08-30 01:17:07,642 INFO L137 encePairwiseOnDemand]: 148/153 looper letters, 32 selfloop transitions, 5 changer transitions 21/70 dead transitions. [2023-08-30 01:17:07,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 70 transitions, 412 flow [2023-08-30 01:17:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:17:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:17:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 557 transitions. [2023-08-30 01:17:07,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200746965452848 [2023-08-30 01:17:07,644 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 557 transitions. [2023-08-30 01:17:07,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 557 transitions. [2023-08-30 01:17:07,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:07,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 557 transitions. [2023-08-30 01:17:07,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 79.57142857142857) internal successors, (557), 7 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,648 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,648 INFO L175 Difference]: Start difference. First operand has 55 places, 39 transitions, 169 flow. Second operand 7 states and 557 transitions. [2023-08-30 01:17:07,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 70 transitions, 412 flow [2023-08-30 01:17:07,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 406 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 01:17:07,653 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 170 flow [2023-08-30 01:17:07,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=170, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2023-08-30 01:17:07,654 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-30 01:17:07,654 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 170 flow [2023-08-30 01:17:07,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:07,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:07,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 01:17:07,656 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:07,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1599262865, now seen corresponding path program 4 times [2023-08-30 01:17:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:07,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293401263] [2023-08-30 01:17:07,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:07,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:07,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:07,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:07,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293401263] [2023-08-30 01:17:07,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293401263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:07,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:07,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 01:17:07,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568801282] [2023-08-30 01:17:07,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:07,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:07,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:07,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:07,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:07,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 01:17:07,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 170 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:07,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:07,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 01:17:07,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:08,049 INFO L130 PetriNetUnfolder]: 175/481 cut-off events. [2023-08-30 01:17:08,050 INFO L131 PetriNetUnfolder]: For 456/484 co-relation queries the response was YES. [2023-08-30 01:17:08,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1285 conditions, 481 events. 175/481 cut-off events. For 456/484 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2601 event pairs, 31 based on Foata normal form. 34/506 useless extension candidates. Maximal degree in co-relation 1271. Up to 132 conditions per place. [2023-08-30 01:17:08,052 INFO L137 encePairwiseOnDemand]: 146/153 looper letters, 38 selfloop transitions, 8 changer transitions 13/69 dead transitions. [2023-08-30 01:17:08,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 69 transitions, 376 flow [2023-08-30 01:17:08,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 01:17:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 01:17:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 620 transitions. [2023-08-30 01:17:08,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5065359477124183 [2023-08-30 01:17:08,055 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 620 transitions. [2023-08-30 01:17:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 620 transitions. [2023-08-30 01:17:08,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:08,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 620 transitions. [2023-08-30 01:17:08,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 77.5) internal successors, (620), 8 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 153.0) internal successors, (1377), 9 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,059 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 170 flow. Second operand 8 states and 620 transitions. [2023-08-30 01:17:08,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 69 transitions, 376 flow [2023-08-30 01:17:08,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 69 transitions, 359 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 01:17:08,063 INFO L231 Difference]: Finished difference. Result has 59 places, 35 transitions, 163 flow [2023-08-30 01:17:08,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=163, PETRI_PLACES=59, PETRI_TRANSITIONS=35} [2023-08-30 01:17:08,063 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 16 predicate places. [2023-08-30 01:17:08,064 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 35 transitions, 163 flow [2023-08-30 01:17:08,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:08,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:08,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 01:17:08,065 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:08,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:08,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1044082315, now seen corresponding path program 5 times [2023-08-30 01:17:08,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:08,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727850473] [2023-08-30 01:17:08,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:08,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:08,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:08,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727850473] [2023-08-30 01:17:08,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727850473] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:08,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:08,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 01:17:08,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741207535] [2023-08-30 01:17:08,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:08,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 01:17:08,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:08,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 01:17:08,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 01:17:08,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 153 [2023-08-30 01:17:08,144 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 35 transitions, 163 flow. Second operand has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,145 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:08,145 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 153 [2023-08-30 01:17:08,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:08,198 INFO L130 PetriNetUnfolder]: 116/351 cut-off events. [2023-08-30 01:17:08,198 INFO L131 PetriNetUnfolder]: For 423/437 co-relation queries the response was YES. [2023-08-30 01:17:08,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 351 events. 116/351 cut-off events. For 423/437 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1805 event pairs, 99 based on Foata normal form. 7/343 useless extension candidates. Maximal degree in co-relation 962. Up to 249 conditions per place. [2023-08-30 01:17:08,201 INFO L137 encePairwiseOnDemand]: 150/153 looper letters, 23 selfloop transitions, 2 changer transitions 2/41 dead transitions. [2023-08-30 01:17:08,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 41 transitions, 242 flow [2023-08-30 01:17:08,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 01:17:08,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 01:17:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-08-30 01:17:08,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5533769063180828 [2023-08-30 01:17:08,203 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-08-30 01:17:08,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-08-30 01:17:08,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:08,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-08-30 01:17:08,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,206 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 153.0) internal successors, (612), 4 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,206 INFO L175 Difference]: Start difference. First operand has 59 places, 35 transitions, 163 flow. Second operand 3 states and 254 transitions. [2023-08-30 01:17:08,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 41 transitions, 242 flow [2023-08-30 01:17:08,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 215 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-30 01:17:08,209 INFO L231 Difference]: Finished difference. Result has 54 places, 35 transitions, 148 flow [2023-08-30 01:17:08,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=54, PETRI_TRANSITIONS=35} [2023-08-30 01:17:08,210 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 11 predicate places. [2023-08-30 01:17:08,210 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 35 transitions, 148 flow [2023-08-30 01:17:08,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:08,211 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 01:17:08,212 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:08,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:08,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1489930863, now seen corresponding path program 6 times [2023-08-30 01:17:08,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:08,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234725441] [2023-08-30 01:17:08,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:08,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:08,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234725441] [2023-08-30 01:17:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234725441] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 01:17:08,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795111238] [2023-08-30 01:17:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:08,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:08,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:08,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 01:17:08,391 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 35 transitions, 148 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,391 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:08,391 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 01:17:08,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:08,502 INFO L130 PetriNetUnfolder]: 93/261 cut-off events. [2023-08-30 01:17:08,503 INFO L131 PetriNetUnfolder]: For 204/208 co-relation queries the response was YES. [2023-08-30 01:17:08,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 713 conditions, 261 events. 93/261 cut-off events. For 204/208 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1132 event pairs, 31 based on Foata normal form. 10/264 useless extension candidates. Maximal degree in co-relation 700. Up to 130 conditions per place. [2023-08-30 01:17:08,504 INFO L137 encePairwiseOnDemand]: 146/153 looper letters, 20 selfloop transitions, 3 changer transitions 10/43 dead transitions. [2023-08-30 01:17:08,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 43 transitions, 230 flow [2023-08-30 01:17:08,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 01:17:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 01:17:08,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 384 transitions. [2023-08-30 01:17:08,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5019607843137255 [2023-08-30 01:17:08,506 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 384 transitions. [2023-08-30 01:17:08,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 384 transitions. [2023-08-30 01:17:08,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:08,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 384 transitions. [2023-08-30 01:17:08,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 76.8) internal successors, (384), 5 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,510 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 153.0) internal successors, (918), 6 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,510 INFO L175 Difference]: Start difference. First operand has 54 places, 35 transitions, 148 flow. Second operand 5 states and 384 transitions. [2023-08-30 01:17:08,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 43 transitions, 230 flow [2023-08-30 01:17:08,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 224 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-30 01:17:08,512 INFO L231 Difference]: Finished difference. Result has 55 places, 29 transitions, 117 flow [2023-08-30 01:17:08,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=117, PETRI_PLACES=55, PETRI_TRANSITIONS=29} [2023-08-30 01:17:08,513 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 12 predicate places. [2023-08-30 01:17:08,513 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 29 transitions, 117 flow [2023-08-30 01:17:08,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 01:17:08,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 01:17:08,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 01:17:08,514 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-08-30 01:17:08,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 01:17:08,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1079086249, now seen corresponding path program 7 times [2023-08-30 01:17:08,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 01:17:08,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455390652] [2023-08-30 01:17:08,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 01:17:08,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 01:17:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 01:17:08,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 01:17:08,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 01:17:08,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455390652] [2023-08-30 01:17:08,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455390652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 01:17:08,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 01:17:08,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 01:17:08,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205329258] [2023-08-30 01:17:08,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 01:17:08,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 01:17:08,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 01:17:08,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 01:17:08,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 01:17:08,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 153 [2023-08-30 01:17:08,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 29 transitions, 117 flow. Second operand has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 01:17:08,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 153 [2023-08-30 01:17:08,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 01:17:08,700 INFO L130 PetriNetUnfolder]: 31/86 cut-off events. [2023-08-30 01:17:08,700 INFO L131 PetriNetUnfolder]: For 56/58 co-relation queries the response was YES. [2023-08-30 01:17:08,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 86 events. 31/86 cut-off events. For 56/58 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 245 event pairs, 2 based on Foata normal form. 8/94 useless extension candidates. Maximal degree in co-relation 242. Up to 26 conditions per place. [2023-08-30 01:17:08,701 INFO L137 encePairwiseOnDemand]: 147/153 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-30 01:17:08,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 30 transitions, 164 flow [2023-08-30 01:17:08,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 01:17:08,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 01:17:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 515 transitions. [2023-08-30 01:17:08,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.480859010270775 [2023-08-30 01:17:08,703 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 515 transitions. [2023-08-30 01:17:08,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 515 transitions. [2023-08-30 01:17:08,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 01:17:08,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 515 transitions. [2023-08-30 01:17:08,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 73.57142857142857) internal successors, (515), 7 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,707 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 153.0) internal successors, (1224), 8 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,707 INFO L175 Difference]: Start difference. First operand has 55 places, 29 transitions, 117 flow. Second operand 7 states and 515 transitions. [2023-08-30 01:17:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 30 transitions, 164 flow [2023-08-30 01:17:08,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 129 flow, removed 11 selfloop flow, removed 10 redundant places. [2023-08-30 01:17:08,708 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-30 01:17:08,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=153, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-30 01:17:08,709 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -3 predicate places. [2023-08-30 01:17:08,709 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-30 01:17:08,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 72.71428571428571) internal successors, (509), 7 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 01:17:08,711 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-08-30 01:17:08,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-08-30 01:17:08,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-08-30 01:17:08,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-08-30 01:17:08,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-08-30 01:17:08,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-08-30 01:17:08,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-08-30 01:17:08,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 01:17:08,714 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1, 1, 1] [2023-08-30 01:17:08,717 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 01:17:08,717 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 01:17:08,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 01:17:08 BasicIcfg [2023-08-30 01:17:08,720 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 01:17:08,720 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 01:17:08,720 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 01:17:08,720 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 01:17:08,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 01:17:02" (3/4) ... [2023-08-30 01:17:08,723 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 01:17:08,728 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 01:17:08,728 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 01:17:08,731 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2023-08-30 01:17:08,732 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 01:17:08,732 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-30 01:17:08,732 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 01:17:08,761 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 01:17:08,761 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 01:17:08,762 INFO L158 Benchmark]: Toolchain (without parser) took 7021.34ms. Allocated memory was 69.2MB in the beginning and 151.0MB in the end (delta: 81.8MB). Free memory was 43.6MB in the beginning and 46.2MB in the end (delta: -2.6MB). Peak memory consumption was 79.0MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,762 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:17:08,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.56ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 32.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,763 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.73ms. Allocated memory is still 69.2MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,763 INFO L158 Benchmark]: Boogie Preprocessor took 46.70ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 29.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 01:17:08,763 INFO L158 Benchmark]: RCFGBuilder took 534.52ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 29.3MB in the beginning and 69.2MB in the end (delta: -39.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,764 INFO L158 Benchmark]: TraceAbstraction took 6077.46ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 68.6MB in the beginning and 49.3MB in the end (delta: 19.2MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,764 INFO L158 Benchmark]: Witness Printer took 41.49ms. Allocated memory is still 151.0MB. Free memory was 49.3MB in the beginning and 46.2MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 01:17:08,766 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 69.2MB. Free memory is still 47.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.56ms. Allocated memory is still 69.2MB. Free memory was 43.4MB in the beginning and 32.4MB in the end (delta: 11.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.73ms. Allocated memory is still 69.2MB. Free memory was 32.2MB in the beginning and 30.6MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.70ms. Allocated memory is still 69.2MB. Free memory was 30.6MB in the beginning and 29.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 534.52ms. Allocated memory was 69.2MB in the beginning and 104.9MB in the end (delta: 35.7MB). Free memory was 29.3MB in the beginning and 69.2MB in the end (delta: -39.9MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * TraceAbstraction took 6077.46ms. Allocated memory was 104.9MB in the beginning and 151.0MB in the end (delta: 46.1MB). Free memory was 68.6MB in the beginning and 49.3MB in the end (delta: 19.2MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 41.49ms. Allocated memory is still 151.0MB. Free memory was 49.3MB in the beginning and 46.2MB 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: 2.4s, 90 PlacesBefore, 43 PlacesAfterwards, 84 TransitionsBefore, 36 TransitionsAfterwards, 748 CoEnabledTransitionPairs, 6 FixpointIterations, 44 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 1 TrivialYvCompositions, 0 ConcurrentYvCompositions, 1 ChoiceCompositions, 63 TotalNumberOfCompositions, 4687 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2529, independent: 2294, independent conditional: 0, independent unconditional: 2294, dependent: 235, dependent conditional: 0, dependent unconditional: 235, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 371, independent: 355, independent conditional: 0, independent unconditional: 355, dependent: 16, dependent conditional: 0, dependent unconditional: 16, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2529, independent: 1939, independent conditional: 0, independent unconditional: 1939, dependent: 219, dependent conditional: 0, dependent unconditional: 219, unknown: 371, unknown conditional: 0, unknown unconditional: 371] , Statistics on independence cache: Total cache size (in pairs): 160, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, 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: 116]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 106]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 116 locations, 12 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: 6.0s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 738 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 547 mSDsluCounter, 208 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1298 IncrementalHoareTripleChecker+Invalid, 1365 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 96 mSDtfsCounter, 1298 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=8, InterpolantAutomatonStates: 60, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 206 NumberOfCodeBlocks, 206 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 194 ConstructedInterpolants, 0 QuantifiedInterpolants, 814 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 01:17:08,797 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