./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 23:28:32,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 23:28:32,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 23:28:32,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 23:28:32,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 23:28:32,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 23:28:32,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 23:28:32,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 23:28:32,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 23:28:32,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 23:28:32,668 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 23:28:32,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 23:28:32,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 23:28:32,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 23:28:32,673 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 23:28:32,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 23:28:32,676 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 23:28:32,677 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 23:28:32,679 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 23:28:32,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 23:28:32,685 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 23:28:32,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 23:28:32,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 23:28:32,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 23:28:32,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 23:28:32,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 23:28:32,699 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 23:28:32,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 23:28:32,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 23:28:32,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 23:28:32,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 23:28:32,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 23:28:32,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 23:28:32,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 23:28:32,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 23:28:32,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 23:28:32,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 23:28:32,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 23:28:32,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 23:28:32,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 23:28:32,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 23:28:32,712 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-08-31 23:28:32,743 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 23:28:32,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 23:28:32,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 23:28:32,745 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 23:28:32,745 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 23:28:32,746 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 23:28:32,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 23:28:32,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 23:28:32,747 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 23:28:32,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 23:28:32,747 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 23:28:32,748 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 23:28:32,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 23:28:32,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 23:28:32,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 23:28:32,748 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 23:28:32,749 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 23:28:32,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 23:28:32,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 23:28:32,750 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 23:28:32,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:28:32,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 23:28:32,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 23:28:32,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 23:28:32,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 23:28:32,751 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 23:28:32,751 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 23:28:32,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 23:28:32,752 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 23:28:32,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d13e05ad1104a4a5317ff09857a34619cbd86966f0892caf9775309ccc15230d Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 23:28:33,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 23:28:33,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 23:28:33,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 23:28:33,076 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 23:28:33,077 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 23:28:33,078 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-31 23:28:34,191 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 23:28:34,444 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 23:28:34,449 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i [2023-08-31 23:28:34,464 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7ba8555/a46c5d53c00c441fa308ce677859353a/FLAG1d67077d7 [2023-08-31 23:28:34,477 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c7ba8555/a46c5d53c00c441fa308ce677859353a [2023-08-31 23:28:34,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 23:28:34,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 23:28:34,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 23:28:34,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 23:28:34,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 23:28:34,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:34,494 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24266da8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34, skipping insertion in model container [2023-08-31 23:28:34,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:34,499 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 23:28:34,528 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 23:28:34,654 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i[945,958] [2023-08-31 23:28:34,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:28:34,803 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 23:28:34,818 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe001_tso.i[945,958] [2023-08-31 23:28:34,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 23:28:34,911 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:28:34,911 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 23:28:34,917 INFO L208 MainTranslator]: Completed translation [2023-08-31 23:28:34,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34 WrapperNode [2023-08-31 23:28:34,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 23:28:34,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 23:28:34,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 23:28:34,920 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 23:28:34,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:34,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:34,981 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-31 23:28:34,981 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 23:28:34,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 23:28:34,983 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 23:28:34,983 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 23:28:34,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:34,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,014 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,026 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 23:28:35,037 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 23:28:35,037 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 23:28:35,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 23:28:35,038 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (1/1) ... [2023-08-31 23:28:35,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 23:28:35,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 23:28:35,070 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) [2023-08-31 23:28:35,081 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 [2023-08-31 23:28:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 23:28:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 23:28:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 23:28:35,104 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 23:28:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 23:28:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-31 23:28:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-31 23:28:35,105 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-31 23:28:35,105 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-31 23:28:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-31 23:28:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-31 23:28:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 23:28:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 23:28:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 23:28:35,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 23:28:35,108 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 23:28:35,221 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 23:28:35,222 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 23:28:35,489 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 23:28:35,496 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 23:28:35,498 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-31 23:28:35,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:28:35 BoogieIcfgContainer [2023-08-31 23:28:35,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 23:28:35,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 23:28:35,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 23:28:35,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 23:28:35,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:28:34" (1/3) ... [2023-08-31 23:28:35,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341e5c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:28:35, skipping insertion in model container [2023-08-31 23:28:35,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:28:34" (2/3) ... [2023-08-31 23:28:35,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@341e5c57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:28:35, skipping insertion in model container [2023-08-31 23:28:35,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:28:35" (3/3) ... [2023-08-31 23:28:35,508 INFO L112 eAbstractionObserver]: Analyzing ICFG safe001_tso.i [2023-08-31 23:28:35,524 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 23:28:35,524 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-08-31 23:28:35,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 23:28:35,615 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 23:28:35,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:28:35,710 INFO L130 PetriNetUnfolder]: 2/91 cut-off events. [2023-08-31 23:28:35,710 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:28:35,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101 conditions, 91 events. 2/91 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 71. Up to 2 conditions per place. [2023-08-31 23:28:35,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 94 transitions, 203 flow [2023-08-31 23:28:35,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 87 transitions, 183 flow [2023-08-31 23:28:35,726 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 23:28:35,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:28:35,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 87 transitions, 183 flow [2023-08-31 23:28:35,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 87 transitions, 183 flow [2023-08-31 23:28:35,772 INFO L130 PetriNetUnfolder]: 2/87 cut-off events. [2023-08-31 23:28:35,775 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:28:35,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 87 events. 2/87 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 71 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-08-31 23:28:35,777 INFO L119 LiptonReduction]: Number of co-enabled transitions 1512 [2023-08-31 23:28:38,364 INFO L134 LiptonReduction]: Checked pairs total: 3595 [2023-08-31 23:28:38,364 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-31 23:28:38,376 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 23:28:38,382 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;@aadc64a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 23:28:38,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2023-08-31 23:28:38,385 INFO L130 PetriNetUnfolder]: 0/1 cut-off events. [2023-08-31 23:28:38,385 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:28:38,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:38,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-31 23:28:38,386 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:38,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:38,391 INFO L85 PathProgramCache]: Analyzing trace with hash 334, now seen corresponding path program 1 times [2023-08-31 23:28:38,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:38,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862722929] [2023-08-31 23:28:38,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:38,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:38,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:38,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:38,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862722929] [2023-08-31 23:28:38,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862722929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:38,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:38,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-31 23:28:38,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489950298] [2023-08-31 23:28:38,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:38,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 23:28:38,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:38,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 23:28:38,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 23:28:38,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 188 [2023-08-31 23:28:38,530 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:38,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:38,530 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 188 [2023-08-31 23:28:38,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:38,650 INFO L130 PetriNetUnfolder]: 218/374 cut-off events. [2023-08-31 23:28:38,650 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 23:28:38,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 374 events. 218/374 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1601 event pairs, 218 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 745. Up to 352 conditions per place. [2023-08-31 23:28:38,655 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 15 selfloop transitions, 0 changer transitions 0/18 dead transitions. [2023-08-31 23:28:38,655 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 18 transitions, 75 flow [2023-08-31 23:28:38,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 23:28:38,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 23:28:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 198 transitions. [2023-08-31 23:28:38,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526595744680851 [2023-08-31 23:28:38,668 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 198 transitions. [2023-08-31 23:28:38,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 198 transitions. [2023-08-31 23:28:38,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:38,682 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 198 transitions. [2023-08-31 23:28:38,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 99.0) internal successors, (198), 2 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:38,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:38,689 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 188.0) internal successors, (564), 3 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:38,691 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 2 states and 198 transitions. [2023-08-31 23:28:38,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 18 transitions, 75 flow [2023-08-31 23:28:38,693 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 18 transitions, 72 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:28:38,694 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 42 flow [2023-08-31 23:28:38,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=42, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-31 23:28:38,699 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -8 predicate places. [2023-08-31 23:28:38,699 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 42 flow [2023-08-31 23:28:38,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:38,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:38,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:38,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 23:28:38,700 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:38,701 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:38,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405077, now seen corresponding path program 1 times [2023-08-31 23:28:38,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:38,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793150272] [2023-08-31 23:28:38,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:38,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:39,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:39,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:39,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793150272] [2023-08-31 23:28:39,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793150272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:39,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:39,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-31 23:28:39,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020623179] [2023-08-31 23:28:39,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:39,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 23:28:39,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:39,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 23:28:39,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 23:28:39,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:39,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:39,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:39,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:39,351 INFO L130 PetriNetUnfolder]: 797/1251 cut-off events. [2023-08-31 23:28:39,351 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 23:28:39,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 1251 events. 797/1251 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5670 event pairs, 334 based on Foata normal form. 0/1205 useless extension candidates. Maximal degree in co-relation 2552. Up to 712 conditions per place. [2023-08-31 23:28:39,362 INFO L137 encePairwiseOnDemand]: 179/188 looper letters, 25 selfloop transitions, 8 changer transitions 0/33 dead transitions. [2023-08-31 23:28:39,362 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 142 flow [2023-08-31 23:28:39,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 23:28:39,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 23:28:39,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 268 transitions. [2023-08-31 23:28:39,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475177304964539 [2023-08-31 23:28:39,369 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 268 transitions. [2023-08-31 23:28:39,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 268 transitions. [2023-08-31 23:28:39,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:39,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 268 transitions. [2023-08-31 23:28:39,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,375 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,375 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 42 flow. Second operand 3 states and 268 transitions. [2023-08-31 23:28:39,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 142 flow [2023-08-31 23:28:39,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 142 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:28:39,377 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 104 flow [2023-08-31 23:28:39,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-08-31 23:28:39,378 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -4 predicate places. [2023-08-31 23:28:39,378 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 104 flow [2023-08-31 23:28:39,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:39,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:39,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 23:28:39,380 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:39,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:39,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1192405085, now seen corresponding path program 1 times [2023-08-31 23:28:39,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:39,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744188742] [2023-08-31 23:28:39,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:39,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:39,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:39,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744188742] [2023-08-31 23:28:39,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744188742] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:39,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:39,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:28:39,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866576145] [2023-08-31 23:28:39,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:39,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:28:39,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:39,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:28:39,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:28:39,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 188 [2023-08-31 23:28:39,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:39,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 188 [2023-08-31 23:28:39,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:39,953 INFO L130 PetriNetUnfolder]: 416/722 cut-off events. [2023-08-31 23:28:39,953 INFO L131 PetriNetUnfolder]: For 407/407 co-relation queries the response was YES. [2023-08-31 23:28:39,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1939 conditions, 722 events. 416/722 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3441 event pairs, 104 based on Foata normal form. 97/817 useless extension candidates. Maximal degree in co-relation 1934. Up to 528 conditions per place. [2023-08-31 23:28:39,958 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 22 selfloop transitions, 3 changer transitions 0/31 dead transitions. [2023-08-31 23:28:39,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 31 transitions, 176 flow [2023-08-31 23:28:39,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:28:39,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:28:39,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 386 transitions. [2023-08-31 23:28:39,960 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106382978723404 [2023-08-31 23:28:39,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 386 transitions. [2023-08-31 23:28:39,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 386 transitions. [2023-08-31 23:28:39,961 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:39,961 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 386 transitions. [2023-08-31 23:28:39,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,964 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,965 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,965 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 104 flow. Second operand 5 states and 386 transitions. [2023-08-31 23:28:39,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 31 transitions, 176 flow [2023-08-31 23:28:39,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 31 transitions, 156 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 23:28:39,970 INFO L231 Difference]: Finished difference. Result has 31 places, 23 transitions, 86 flow [2023-08-31 23:28:39,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=86, PETRI_PLACES=31, PETRI_TRANSITIONS=23} [2023-08-31 23:28:39,972 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-31 23:28:39,975 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 23 transitions, 86 flow [2023-08-31 23:28:39,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:39,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:39,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 23:28:39,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:39,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1079603841, now seen corresponding path program 1 times [2023-08-31 23:28:39,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:39,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422555710] [2023-08-31 23:28:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:39,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:40,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:40,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422555710] [2023-08-31 23:28:40,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422555710] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:40,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:40,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:28:40,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881207574] [2023-08-31 23:28:40,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:40,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:28:40,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:40,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:28:40,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:28:40,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:40,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 23 transitions, 86 flow. Second operand has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,150 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:40,150 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:40,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:40,252 INFO L130 PetriNetUnfolder]: 521/843 cut-off events. [2023-08-31 23:28:40,253 INFO L131 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2023-08-31 23:28:40,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2209 conditions, 843 events. 521/843 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3441 event pairs, 103 based on Foata normal form. 7/850 useless extension candidates. Maximal degree in co-relation 2204. Up to 344 conditions per place. [2023-08-31 23:28:40,258 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 30 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2023-08-31 23:28:40,258 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 38 transitions, 208 flow [2023-08-31 23:28:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:28:40,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:28:40,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 346 transitions. [2023-08-31 23:28:40,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4601063829787234 [2023-08-31 23:28:40,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 346 transitions. [2023-08-31 23:28:40,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 346 transitions. [2023-08-31 23:28:40,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:40,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 346 transitions. [2023-08-31 23:28:40,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.5) internal successors, (346), 4 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,263 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,263 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,263 INFO L175 Difference]: Start difference. First operand has 31 places, 23 transitions, 86 flow. Second operand 4 states and 346 transitions. [2023-08-31 23:28:40,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 38 transitions, 208 flow [2023-08-31 23:28:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 38 transitions, 203 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-31 23:28:40,265 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 139 flow [2023-08-31 23:28:40,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=139, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-31 23:28:40,266 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-31 23:28:40,266 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 139 flow [2023-08-31 23:28:40,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.25) internal successors, (321), 4 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:40,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 23:28:40,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:40,267 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -855030366, now seen corresponding path program 1 times [2023-08-31 23:28:40,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:40,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483302772] [2023-08-31 23:28:40,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:40,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:40,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:40,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483302772] [2023-08-31 23:28:40,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483302772] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:40,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:40,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:28:40,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382365187] [2023-08-31 23:28:40,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:40,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:28:40,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:40,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:28:40,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:28:40,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:40,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:40,384 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:40,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:40,497 INFO L130 PetriNetUnfolder]: 493/800 cut-off events. [2023-08-31 23:28:40,497 INFO L131 PetriNetUnfolder]: For 657/657 co-relation queries the response was YES. [2023-08-31 23:28:40,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 800 events. 493/800 cut-off events. For 657/657 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3359 event pairs, 88 based on Foata normal form. 9/809 useless extension candidates. Maximal degree in co-relation 2551. Up to 372 conditions per place. [2023-08-31 23:28:40,502 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 40 selfloop transitions, 12 changer transitions 0/52 dead transitions. [2023-08-31 23:28:40,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 347 flow [2023-08-31 23:28:40,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:28:40,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:28:40,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 354 transitions. [2023-08-31 23:28:40,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47074468085106386 [2023-08-31 23:28:40,504 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 354 transitions. [2023-08-31 23:28:40,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 354 transitions. [2023-08-31 23:28:40,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:40,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 354 transitions. [2023-08-31 23:28:40,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.5) internal successors, (354), 4 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,507 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,507 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 139 flow. Second operand 4 states and 354 transitions. [2023-08-31 23:28:40,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 347 flow [2023-08-31 23:28:40,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 342 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:28:40,512 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 241 flow [2023-08-31 23:28:40,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=241, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-08-31 23:28:40,514 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-08-31 23:28:40,515 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 241 flow [2023-08-31 23:28:40,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:40,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:40,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 23:28:40,516 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:40,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -855808342, now seen corresponding path program 1 times [2023-08-31 23:28:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:40,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069041539] [2023-08-31 23:28:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:40,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:40,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:40,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069041539] [2023-08-31 23:28:40,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069041539] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:40,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:40,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:28:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660252957] [2023-08-31 23:28:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:40,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:28:40,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:40,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:28:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:28:40,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:40,715 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 241 flow. Second operand has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,715 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:40,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:40,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:40,800 INFO L130 PetriNetUnfolder]: 478/776 cut-off events. [2023-08-31 23:28:40,800 INFO L131 PetriNetUnfolder]: For 1319/1319 co-relation queries the response was YES. [2023-08-31 23:28:40,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2940 conditions, 776 events. 478/776 cut-off events. For 1319/1319 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3177 event pairs, 60 based on Foata normal form. 3/779 useless extension candidates. Maximal degree in co-relation 2930. Up to 406 conditions per place. [2023-08-31 23:28:40,806 INFO L137 encePairwiseOnDemand]: 180/188 looper letters, 36 selfloop transitions, 22 changer transitions 0/58 dead transitions. [2023-08-31 23:28:40,806 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 58 transitions, 505 flow [2023-08-31 23:28:40,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 23:28:40,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 23:28:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-31 23:28:40,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46941489361702127 [2023-08-31 23:28:40,808 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-31 23:28:40,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-31 23:28:40,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:40,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-31 23:28:40,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,811 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 188.0) internal successors, (940), 5 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,811 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 241 flow. Second operand 4 states and 353 transitions. [2023-08-31 23:28:40,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 58 transitions, 505 flow [2023-08-31 23:28:40,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 58 transitions, 498 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 23:28:40,816 INFO L231 Difference]: Finished difference. Result has 44 places, 43 transitions, 436 flow [2023-08-31 23:28:40,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=436, PETRI_PLACES=44, PETRI_TRANSITIONS=43} [2023-08-31 23:28:40,817 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 10 predicate places. [2023-08-31 23:28:40,817 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 43 transitions, 436 flow [2023-08-31 23:28:40,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.5) internal successors, (322), 4 states have internal predecessors, (322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:40,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:40,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 23:28:40,818 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:40,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:40,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1788964998, now seen corresponding path program 1 times [2023-08-31 23:28:40,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:40,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402568091] [2023-08-31 23:28:40,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:40,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:40,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:40,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:40,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402568091] [2023-08-31 23:28:40,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402568091] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:40,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:40,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:28:40,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292250454] [2023-08-31 23:28:40,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:40,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:28:40,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:40,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:28:40,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:28:40,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:40,944 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 43 transitions, 436 flow. Second operand has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:40,944 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:40,944 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:40,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:41,054 INFO L130 PetriNetUnfolder]: 527/868 cut-off events. [2023-08-31 23:28:41,055 INFO L131 PetriNetUnfolder]: For 3174/3174 co-relation queries the response was YES. [2023-08-31 23:28:41,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3700 conditions, 868 events. 527/868 cut-off events. For 3174/3174 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3678 event pairs, 108 based on Foata normal form. 27/895 useless extension candidates. Maximal degree in co-relation 3687. Up to 476 conditions per place. [2023-08-31 23:28:41,059 INFO L137 encePairwiseOnDemand]: 181/188 looper letters, 34 selfloop transitions, 10 changer transitions 34/78 dead transitions. [2023-08-31 23:28:41,060 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 885 flow [2023-08-31 23:28:41,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:28:41,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:28:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-31 23:28:41,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46063829787234045 [2023-08-31 23:28:41,062 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-31 23:28:41,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-31 23:28:41,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:41,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-31 23:28:41,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,065 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,065 INFO L175 Difference]: Start difference. First operand has 44 places, 43 transitions, 436 flow. Second operand 5 states and 433 transitions. [2023-08-31 23:28:41,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 885 flow [2023-08-31 23:28:41,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 78 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 23:28:41,072 INFO L231 Difference]: Finished difference. Result has 50 places, 30 transitions, 300 flow [2023-08-31 23:28:41,073 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=300, PETRI_PLACES=50, PETRI_TRANSITIONS=30} [2023-08-31 23:28:41,073 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-31 23:28:41,073 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 30 transitions, 300 flow [2023-08-31 23:28:41,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,074 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:41,074 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:41,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 23:28:41,074 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:41,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:41,075 INFO L85 PathProgramCache]: Analyzing trace with hash 2013724312, now seen corresponding path program 1 times [2023-08-31 23:28:41,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:41,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018468965] [2023-08-31 23:28:41,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:41,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:41,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:41,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:41,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018468965] [2023-08-31 23:28:41,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018468965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:41,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:41,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:28:41,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837832674] [2023-08-31 23:28:41,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:41,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:28:41,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:41,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:28:41,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:28:41,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:28:41,191 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 30 transitions, 300 flow. Second operand has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,191 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:41,191 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:28:41,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:41,277 INFO L130 PetriNetUnfolder]: 277/505 cut-off events. [2023-08-31 23:28:41,278 INFO L131 PetriNetUnfolder]: For 1830/1837 co-relation queries the response was YES. [2023-08-31 23:28:41,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 505 events. 277/505 cut-off events. For 1830/1837 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2158 event pairs, 89 based on Foata normal form. 19/517 useless extension candidates. Maximal degree in co-relation 2079. Up to 209 conditions per place. [2023-08-31 23:28:41,281 INFO L137 encePairwiseOnDemand]: 184/188 looper letters, 22 selfloop transitions, 5 changer transitions 15/46 dead transitions. [2023-08-31 23:28:41,281 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 446 flow [2023-08-31 23:28:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:28:41,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:28:41,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:28:41,283 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-31 23:28:41,283 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,283 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:41,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,286 INFO L175 Difference]: Start difference. First operand has 50 places, 30 transitions, 300 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:28:41,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 446 flow [2023-08-31 23:28:41,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 400 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-31 23:28:41,291 INFO L231 Difference]: Finished difference. Result has 51 places, 26 transitions, 228 flow [2023-08-31 23:28:41,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=259, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=228, PETRI_PLACES=51, PETRI_TRANSITIONS=26} [2023-08-31 23:28:41,292 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-31 23:28:41,292 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 26 transitions, 228 flow [2023-08-31 23:28:41,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 86.0) internal successors, (344), 4 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:41,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:41,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 23:28:41,293 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:41,293 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:41,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1557552420, now seen corresponding path program 1 times [2023-08-31 23:28:41,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:41,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166040798] [2023-08-31 23:28:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:41,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:41,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:41,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166040798] [2023-08-31 23:28:41,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166040798] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:41,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:41,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:28:41,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306699939] [2023-08-31 23:28:41,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:41,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:28:41,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:41,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:28:41,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:28:41,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 188 [2023-08-31 23:28:41,416 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 26 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,417 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:41,417 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 188 [2023-08-31 23:28:41,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:41,486 INFO L130 PetriNetUnfolder]: 225/406 cut-off events. [2023-08-31 23:28:41,486 INFO L131 PetriNetUnfolder]: For 1441/1441 co-relation queries the response was YES. [2023-08-31 23:28:41,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1589 conditions, 406 events. 225/406 cut-off events. For 1441/1441 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1481 event pairs, 77 based on Foata normal form. 12/418 useless extension candidates. Maximal degree in co-relation 1572. Up to 232 conditions per place. [2023-08-31 23:28:41,489 INFO L137 encePairwiseOnDemand]: 183/188 looper letters, 21 selfloop transitions, 4 changer transitions 14/39 dead transitions. [2023-08-31 23:28:41,489 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 39 transitions, 353 flow [2023-08-31 23:28:41,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:28:41,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:28:41,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-08-31 23:28:41,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44893617021276594 [2023-08-31 23:28:41,491 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-08-31 23:28:41,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-08-31 23:28:41,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:41,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-08-31 23:28:41,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,494 INFO L175 Difference]: Start difference. First operand has 51 places, 26 transitions, 228 flow. Second operand 5 states and 422 transitions. [2023-08-31 23:28:41,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 39 transitions, 353 flow [2023-08-31 23:28:41,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 39 transitions, 319 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-08-31 23:28:41,499 INFO L231 Difference]: Finished difference. Result has 47 places, 17 transitions, 118 flow [2023-08-31 23:28:41,499 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=47, PETRI_TRANSITIONS=17} [2023-08-31 23:28:41,499 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-31 23:28:41,500 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 17 transitions, 118 flow [2023-08-31 23:28:41,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:41,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:41,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 23:28:41,501 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:41,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:41,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1999099300, now seen corresponding path program 2 times [2023-08-31 23:28:41,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:41,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683546355] [2023-08-31 23:28:41,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:41,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:41,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:41,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:41,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683546355] [2023-08-31 23:28:41,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683546355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:41,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:41,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 23:28:41,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030798324] [2023-08-31 23:28:41,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:41,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 23:28:41,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:41,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 23:28:41,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 23:28:41,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:28:41,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 17 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:41,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:28:41,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:41,671 INFO L130 PetriNetUnfolder]: 46/108 cut-off events. [2023-08-31 23:28:41,671 INFO L131 PetriNetUnfolder]: For 319/323 co-relation queries the response was YES. [2023-08-31 23:28:41,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 108 events. 46/108 cut-off events. For 319/323 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 333 event pairs, 12 based on Foata normal form. 6/112 useless extension candidates. Maximal degree in co-relation 355. Up to 62 conditions per place. [2023-08-31 23:28:41,672 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-08-31 23:28:41,672 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 36 transitions, 271 flow [2023-08-31 23:28:41,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 23:28:41,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 23:28:41,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 450 transitions. [2023-08-31 23:28:41,674 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4787234042553192 [2023-08-31 23:28:41,674 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:41,675 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 450 transitions. [2023-08-31 23:28:41,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 90.0) internal successors, (450), 5 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,677 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 188.0) internal successors, (1128), 6 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,678 INFO L175 Difference]: Start difference. First operand has 47 places, 17 transitions, 118 flow. Second operand 5 states and 450 transitions. [2023-08-31 23:28:41,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 36 transitions, 271 flow [2023-08-31 23:28:41,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 36 transitions, 178 flow, removed 12 selfloop flow, removed 16 redundant places. [2023-08-31 23:28:41,679 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 89 flow [2023-08-31 23:28:41,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=89, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-08-31 23:28:41,680 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-31 23:28:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 89 flow [2023-08-31 23:28:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.75) internal successors, (343), 4 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:41,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:41,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 23:28:41,681 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:41,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:41,681 INFO L85 PathProgramCache]: Analyzing trace with hash 481796789, now seen corresponding path program 1 times [2023-08-31 23:28:41,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:41,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273835854] [2023-08-31 23:28:41,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:41,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:41,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:41,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:41,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:41,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273835854] [2023-08-31 23:28:41,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273835854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:41,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:41,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 23:28:41,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581044219] [2023-08-31 23:28:41,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:41,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-31 23:28:41,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:41,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-31 23:28:41,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 23:28:41,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:28:41,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:41,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:28:41,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:41,854 INFO L130 PetriNetUnfolder]: 24/68 cut-off events. [2023-08-31 23:28:41,855 INFO L131 PetriNetUnfolder]: For 67/74 co-relation queries the response was YES. [2023-08-31 23:28:41,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 68 events. 24/68 cut-off events. For 67/74 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 168 event pairs, 3 based on Foata normal form. 7/73 useless extension candidates. Maximal degree in co-relation 243. Up to 40 conditions per place. [2023-08-31 23:28:41,855 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-08-31 23:28:41,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 248 flow [2023-08-31 23:28:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 23:28:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 23:28:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 534 transitions. [2023-08-31 23:28:41,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4734042553191489 [2023-08-31 23:28:41,858 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 534 transitions. [2023-08-31 23:28:41,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 534 transitions. [2023-08-31 23:28:41,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:41,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 534 transitions. [2023-08-31 23:28:41,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.0) internal successors, (534), 6 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,862 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 188.0) internal successors, (1316), 7 states have internal predecessors, (1316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,862 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 89 flow. Second operand 6 states and 534 transitions. [2023-08-31 23:28:41,862 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 248 flow [2023-08-31 23:28:41,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 243 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 23:28:41,863 INFO L231 Difference]: Finished difference. Result has 42 places, 19 transitions, 108 flow [2023-08-31 23:28:41,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=108, PETRI_PLACES=42, PETRI_TRANSITIONS=19} [2023-08-31 23:28:41,864 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-31 23:28:41,864 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 19 transitions, 108 flow [2023-08-31 23:28:41,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.4) internal successors, (427), 5 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:41,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 23:28:41,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 23:28:41,865 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 8 more)] === [2023-08-31 23:28:41,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 23:28:41,866 INFO L85 PathProgramCache]: Analyzing trace with hash 2050782753, now seen corresponding path program 1 times [2023-08-31 23:28:41,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 23:28:41,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837781657] [2023-08-31 23:28:41,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 23:28:41,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 23:28:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 23:28:42,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 23:28:42,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 23:28:42,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837781657] [2023-08-31 23:28:42,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837781657] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 23:28:42,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 23:28:42,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-31 23:28:42,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327859918] [2023-08-31 23:28:42,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 23:28:42,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-31 23:28:42,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 23:28:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-31 23:28:42,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-31 23:28:42,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 188 [2023-08-31 23:28:42,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 19 transitions, 108 flow. Second operand has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:42,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 23:28:42,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 188 [2023-08-31 23:28:42,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 23:28:42,085 INFO L130 PetriNetUnfolder]: 11/39 cut-off events. [2023-08-31 23:28:42,085 INFO L131 PetriNetUnfolder]: For 86/95 co-relation queries the response was YES. [2023-08-31 23:28:42,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 39 events. 11/39 cut-off events. For 86/95 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 64 event pairs, 2 based on Foata normal form. 6/44 useless extension candidates. Maximal degree in co-relation 151. Up to 17 conditions per place. [2023-08-31 23:28:42,085 INFO L137 encePairwiseOnDemand]: 182/188 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-08-31 23:28:42,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 26 transitions, 183 flow [2023-08-31 23:28:42,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-31 23:28:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-31 23:28:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 605 transitions. [2023-08-31 23:28:42,088 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45972644376899696 [2023-08-31 23:28:42,088 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 605 transitions. [2023-08-31 23:28:42,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 605 transitions. [2023-08-31 23:28:42,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 23:28:42,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 605 transitions. [2023-08-31 23:28:42,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.42857142857143) internal successors, (605), 7 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:42,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:42,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 188.0) internal successors, (1504), 8 states have internal predecessors, (1504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:42,092 INFO L175 Difference]: Start difference. First operand has 42 places, 19 transitions, 108 flow. Second operand 7 states and 605 transitions. [2023-08-31 23:28:42,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 26 transitions, 183 flow [2023-08-31 23:28:42,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 26 transitions, 156 flow, removed 8 selfloop flow, removed 5 redundant places. [2023-08-31 23:28:42,093 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2023-08-31 23:28:42,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=188, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2023-08-31 23:28:42,094 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-31 23:28:42,094 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2023-08-31 23:28:42,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 85.16666666666667) internal successors, (511), 6 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 23:28:42,101 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 11 remaining) [2023-08-31 23:28:42,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 11 remaining) [2023-08-31 23:28:42,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 11 remaining) [2023-08-31 23:28:42,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 11 remaining) [2023-08-31 23:28:42,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 11 remaining) [2023-08-31 23:28:42,102 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 11 remaining) [2023-08-31 23:28:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (4 of 11 remaining) [2023-08-31 23:28:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (3 of 11 remaining) [2023-08-31 23:28:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 11 remaining) [2023-08-31 23:28:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 11 remaining) [2023-08-31 23:28:42,103 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 11 remaining) [2023-08-31 23:28:42,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 23:28:42,104 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 23:28:42,106 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-31 23:28:42,107 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-31 23:28:42,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.08 11:28:42 BasicIcfg [2023-08-31 23:28:42,110 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-31 23:28:42,110 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-31 23:28:42,110 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-31 23:28:42,111 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-31 23:28:42,111 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:28:35" (3/4) ... [2023-08-31 23:28:42,113 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-31 23:28:42,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-31 23:28:42,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-31 23:28:42,119 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-31 23:28:42,124 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-31 23:28:42,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-31 23:28:42,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-08-31 23:28:42,125 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-31 23:28:42,157 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-31 23:28:42,157 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-31 23:28:42,158 INFO L158 Benchmark]: Toolchain (without parser) took 7677.74ms. Allocated memory was 65.0MB in the beginning and 174.1MB in the end (delta: 109.1MB). Free memory was 44.1MB in the beginning and 92.3MB in the end (delta: -48.3MB). Peak memory consumption was 59.9MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,158 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-31 23:28:42,158 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.43ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 53.1MB in the end (delta: -9.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,158 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.27ms. Allocated memory is still 79.7MB. Free memory was 53.1MB in the beginning and 51.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,159 INFO L158 Benchmark]: Boogie Preprocessor took 54.08ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 49.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,159 INFO L158 Benchmark]: RCFGBuilder took 464.03ms. Allocated memory is still 79.7MB. Free memory was 49.3MB in the beginning and 34.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,159 INFO L158 Benchmark]: TraceAbstraction took 6607.42ms. Allocated memory was 79.7MB in the beginning and 174.1MB in the end (delta: 94.4MB). Free memory was 33.9MB in the beginning and 95.5MB in the end (delta: -61.6MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,160 INFO L158 Benchmark]: Witness Printer took 46.82ms. Allocated memory is still 174.1MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-31 23:28:42,162 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 65.0MB. Free memory is still 42.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.43ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 43.9MB in the beginning and 53.1MB in the end (delta: -9.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.27ms. Allocated memory is still 79.7MB. Free memory was 53.1MB in the beginning and 51.0MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.08ms. Allocated memory is still 79.7MB. Free memory was 51.0MB in the beginning and 49.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 464.03ms. Allocated memory is still 79.7MB. Free memory was 49.3MB in the beginning and 34.3MB in the end (delta: 15.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 6607.42ms. Allocated memory was 79.7MB in the beginning and 174.1MB in the end (delta: 94.4MB). Free memory was 33.9MB in the beginning and 95.5MB in the end (delta: -61.6MB). Peak memory consumption was 34.7MB. Max. memory is 16.1GB. * Witness Printer took 46.82ms. Allocated memory is still 174.1MB. Free memory was 95.5MB in the beginning and 92.3MB in the end (delta: 3.2MB). 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: 2.6s, 95 PlacesBefore, 34 PlacesAfterwards, 87 TransitionsBefore, 25 TransitionsAfterwards, 1512 CoEnabledTransitionPairs, 8 FixpointIterations, 28 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 1 ChoiceCompositions, 94 TotalNumberOfCompositions, 3595 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1796, independent: 1667, independent conditional: 0, independent unconditional: 1667, dependent: 129, dependent conditional: 0, dependent unconditional: 129, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 854, independent: 820, independent conditional: 0, independent unconditional: 820, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1796, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 854, unknown conditional: 0, unknown unconditional: 854] , Statistics on independence cache: Total cache size (in pairs): 68, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, 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: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 774]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 117 locations, 11 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: 6.5s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 404 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 138 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 77 mSDsCounter, 75 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 736 IncrementalHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 75 mSolverCounterUnsat, 61 mSDtfsCounter, 736 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=436occurred in iteration=6, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 112 ConstructedInterpolants, 0 QuantifiedInterpolants, 698 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-31 23:28:42,192 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