./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 02:57:02,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 02:57:02,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 02:57:02,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 02:57:02,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 02:57:02,445 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 02:57:02,447 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 02:57:02,450 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 02:57:02,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 02:57:02,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 02:57:02,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 02:57:02,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 02:57:02,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 02:57:02,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 02:57:02,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 02:57:02,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 02:57:02,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 02:57:02,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 02:57:02,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 02:57:02,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 02:57:02,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 02:57:02,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 02:57:02,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 02:57:02,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 02:57:02,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 02:57:02,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 02:57:02,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 02:57:02,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 02:57:02,500 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 02:57:02,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 02:57:02,501 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 02:57:02,507 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 02:57:02,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 02:57:02,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 02:57:02,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 02:57:02,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 02:57:02,511 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 02:57:02,512 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 02:57:02,512 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 02:57:02,513 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 02:57:02,513 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 02:57:02,515 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 02:57:02,548 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 02:57:02,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 02:57:02,549 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 02:57:02,550 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 02:57:02,550 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 02:57:02,551 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 02:57:02,551 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 02:57:02,552 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 02:57:02,552 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 02:57:02,552 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 02:57:02,553 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 02:57:02,553 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 02:57:02,553 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 02:57:02,554 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 02:57:02,554 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 02:57:02,554 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 02:57:02,554 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 02:57:02,554 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 02:57:02,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 02:57:02,555 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 02:57:02,555 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 02:57:02,555 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 02:57:02,556 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 02:57:02,556 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 02:57:02,556 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 02:57:02,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:57:02,557 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 02:57:02,557 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 02:57:02,557 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 02:57:02,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 02:57:02,557 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 02:57:02,558 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 02:57:02,558 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 02:57:02,558 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 02:57:02,558 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fd523f7f98069bc15a8892c75be26f15a858863c31fc6ea863dcd5f92e46c458 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 02:57:02,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 02:57:02,893 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 02:57:02,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 02:57:02,897 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 02:57:02,897 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 02:57:02,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-09-01 02:57:04,114 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 02:57:04,284 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 02:57:04,285 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c [2023-09-01 02:57:04,290 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b852cf4/f7f6b9d6087e4459b6ff4fc9595ca289/FLAG6ee97723e [2023-09-01 02:57:04,302 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4b852cf4/f7f6b9d6087e4459b6ff4fc9595ca289 [2023-09-01 02:57:04,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 02:57:04,305 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 02:57:04,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 02:57:04,306 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 02:57:04,310 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 02:57:04,311 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48a73e94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04, skipping insertion in model container [2023-09-01 02:57:04,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 02:57:04,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 02:57:04,466 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2023-09-01 02:57:04,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:57:04,478 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 02:57:04,495 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure1-alt.wvr.c[2087,2100] [2023-09-01 02:57:04,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 02:57:04,503 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:57:04,503 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 02:57:04,509 INFO L208 MainTranslator]: Completed translation [2023-09-01 02:57:04,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04 WrapperNode [2023-09-01 02:57:04,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 02:57:04,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 02:57:04,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 02:57:04,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 02:57:04,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,547 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 78 [2023-09-01 02:57:04,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 02:57:04,550 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 02:57:04,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 02:57:04,550 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 02:57:04,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,562 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,576 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,589 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 02:57:04,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 02:57:04,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 02:57:04,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 02:57:04,597 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (1/1) ... [2023-09-01 02:57:04,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 02:57:04,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:04,621 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 02:57:04,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 02:57:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 02:57:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 02:57:04,669 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 02:57:04,669 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 02:57:04,670 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 02:57:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 02:57:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 02:57:04,670 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 02:57:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 02:57:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 02:57:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 02:57:04,671 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 02:57:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 02:57:04,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 02:57:04,673 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 02:57:04,813 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 02:57:04,815 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 02:57:05,018 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 02:57:05,052 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 02:57:05,052 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 02:57:05,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:57:05 BoogieIcfgContainer [2023-09-01 02:57:05,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 02:57:05,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 02:57:05,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 02:57:05,059 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 02:57:05,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 02:57:04" (1/3) ... [2023-09-01 02:57:05,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a70b213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:57:05, skipping insertion in model container [2023-09-01 02:57:05,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 02:57:04" (2/3) ... [2023-09-01 02:57:05,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a70b213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 02:57:05, skipping insertion in model container [2023-09-01 02:57:05,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:57:05" (3/3) ... [2023-09-01 02:57:05,062 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure1-alt.wvr.c [2023-09-01 02:57:05,075 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 02:57:05,075 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 02:57:05,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 02:57:05,129 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 02:57:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 96 transitions, 208 flow [2023-09-01 02:57:05,199 INFO L130 PetriNetUnfolder]: 6/94 cut-off events. [2023-09-01 02:57:05,199 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:57:05,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 94 events. 6/94 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 83 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 02:57:05,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 96 transitions, 208 flow [2023-09-01 02:57:05,207 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 91 places, 90 transitions, 192 flow [2023-09-01 02:57:05,210 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 02:57:05,228 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 91 places, 90 transitions, 192 flow [2023-09-01 02:57:05,231 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 91 places, 90 transitions, 192 flow [2023-09-01 02:57:05,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 90 transitions, 192 flow [2023-09-01 02:57:05,254 INFO L130 PetriNetUnfolder]: 6/90 cut-off events. [2023-09-01 02:57:05,254 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:57:05,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 6/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 82 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-09-01 02:57:05,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2023-09-01 02:57:07,835 INFO L134 LiptonReduction]: Checked pairs total: 712 [2023-09-01 02:57:07,835 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-09-01 02:57:07,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 02:57:07,854 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;@57f6ca62, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 02:57:07,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-09-01 02:57:07,855 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-09-01 02:57:07,856 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 02:57:07,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:07,856 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-09-01 02:57:07,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:07,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:07,860 INFO L85 PathProgramCache]: Analyzing trace with hash 382, now seen corresponding path program 1 times [2023-09-01 02:57:07,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:07,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377720165] [2023-09-01 02:57:07,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:07,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:07,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:07,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:07,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377720165] [2023-09-01 02:57:07,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377720165] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:07,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:07,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-09-01 02:57:07,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133791833] [2023-09-01 02:57:07,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:07,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-09-01 02:57:07,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:07,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-09-01 02:57:07,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-09-01 02:57:07,994 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 183 [2023-09-01 02:57:08,001 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 60 flow. Second operand has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,001 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:08,001 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 183 [2023-09-01 02:57:08,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:08,105 INFO L130 PetriNetUnfolder]: 106/169 cut-off events. [2023-09-01 02:57:08,105 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 02:57:08,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 169 events. 106/169 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 547 event pairs, 45 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 277. Up to 167 conditions per place. [2023-09-01 02:57:08,109 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 19 selfloop transitions, 0 changer transitions 0/21 dead transitions. [2023-09-01 02:57:08,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 92 flow [2023-09-01 02:57:08,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-09-01 02:57:08,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-09-01 02:57:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 192 transitions. [2023-09-01 02:57:08,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5245901639344263 [2023-09-01 02:57:08,125 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 192 transitions. [2023-09-01 02:57:08,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 192 transitions. [2023-09-01 02:57:08,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:08,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 192 transitions. [2023-09-01 02:57:08,136 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,142 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 183.0) internal successors, (549), 3 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,144 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 60 flow. Second operand 2 states and 192 transitions. [2023-09-01 02:57:08,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 92 flow [2023-09-01 02:57:08,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 21 transitions, 84 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-09-01 02:57:08,148 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 46 flow [2023-09-01 02:57:08,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=46, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-09-01 02:57:08,153 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-09-01 02:57:08,154 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 46 flow [2023-09-01 02:57:08,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 85.5) internal successors, (171), 2 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:08,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:57:08,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 02:57:08,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:08,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:08,158 INFO L85 PathProgramCache]: Analyzing trace with hash 374625, now seen corresponding path program 1 times [2023-09-01 02:57:08,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:08,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866092769] [2023-09-01 02:57:08,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:08,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:08,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:08,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:08,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866092769] [2023-09-01 02:57:08,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866092769] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:08,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:08,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:57:08,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012136609] [2023-09-01 02:57:08,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:08,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:57:08,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:08,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:57:08,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:57:08,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 183 [2023-09-01 02:57:08,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:08,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 183 [2023-09-01 02:57:08,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:08,398 INFO L130 PetriNetUnfolder]: 99/156 cut-off events. [2023-09-01 02:57:08,399 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:57:08,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 156 events. 99/156 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 497 event pairs, 42 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 313. Up to 153 conditions per place. [2023-09-01 02:57:08,400 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 16 selfloop transitions, 1 changer transitions 0/19 dead transitions. [2023-09-01 02:57:08,400 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 19 transitions, 76 flow [2023-09-01 02:57:08,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:57:08,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:57:08,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-09-01 02:57:08,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44990892531876137 [2023-09-01 02:57:08,403 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-09-01 02:57:08,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-09-01 02:57:08,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:08,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-09-01 02:57:08,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,406 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,406 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 46 flow. Second operand 3 states and 247 transitions. [2023-09-01 02:57:08,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 19 transitions, 76 flow [2023-09-01 02:57:08,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 23 places, 19 transitions, 76 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-09-01 02:57:08,407 INFO L231 Difference]: Finished difference. Result has 23 places, 19 transitions, 44 flow [2023-09-01 02:57:08,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=23, PETRI_TRANSITIONS=19} [2023-09-01 02:57:08,408 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -6 predicate places. [2023-09-01 02:57:08,408 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 44 flow [2023-09-01 02:57:08,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:08,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-09-01 02:57:08,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 02:57:08,411 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:08,411 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:08,412 INFO L85 PathProgramCache]: Analyzing trace with hash 374626, now seen corresponding path program 1 times [2023-09-01 02:57:08,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:08,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176108584] [2023-09-01 02:57:08,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:08,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:08,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:08,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:08,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:08,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176108584] [2023-09-01 02:57:08,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176108584] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:08,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:08,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-09-01 02:57:08,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039258080] [2023-09-01 02:57:08,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:08,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 02:57:08,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:08,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 02:57:08,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 02:57:08,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 183 [2023-09-01 02:57:08,588 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,589 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:08,589 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 183 [2023-09-01 02:57:08,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:08,637 INFO L130 PetriNetUnfolder]: 92/143 cut-off events. [2023-09-01 02:57:08,637 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:57:08,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 143 events. 92/143 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 433 event pairs, 39 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 288. Up to 140 conditions per place. [2023-09-01 02:57:08,639 INFO L137 encePairwiseOnDemand]: 180/183 looper letters, 14 selfloop transitions, 1 changer transitions 0/17 dead transitions. [2023-09-01 02:57:08,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 17 transitions, 70 flow [2023-09-01 02:57:08,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:57:08,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:57:08,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-09-01 02:57:08,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4681238615664845 [2023-09-01 02:57:08,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-09-01 02:57:08,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-09-01 02:57:08,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:08,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-09-01 02:57:08,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,645 INFO L175 Difference]: Start difference. First operand has 23 places, 19 transitions, 44 flow. Second operand 3 states and 257 transitions. [2023-09-01 02:57:08,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 17 transitions, 70 flow [2023-09-01 02:57:08,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 69 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:57:08,646 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 41 flow [2023-09-01 02:57:08,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=39, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=41, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2023-09-01 02:57:08,647 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 02:57:08,647 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 41 flow [2023-09-01 02:57:08,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:08,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:57:08,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 02:57:08,649 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:08,649 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:08,649 INFO L85 PathProgramCache]: Analyzing trace with hash 360022076, now seen corresponding path program 1 times [2023-09-01 02:57:08,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:08,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670708504] [2023-09-01 02:57:08,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:08,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:08,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:08,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:08,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:08,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670708504] [2023-09-01 02:57:08,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670708504] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:08,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:08,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:57:08,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190208691] [2023-09-01 02:57:08,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:08,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:57:08,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:08,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:57:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:57:08,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:08,839 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 41 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,839 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:08,839 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:08,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:08,873 INFO L130 PetriNetUnfolder]: 70/112 cut-off events. [2023-09-01 02:57:08,874 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:57:08,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 112 events. 70/112 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 309 event pairs, 29 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 227. Up to 109 conditions per place. [2023-09-01 02:57:08,877 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 13 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-09-01 02:57:08,878 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 16 transitions, 67 flow [2023-09-01 02:57:08,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:57:08,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:57:08,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 231 transitions. [2023-09-01 02:57:08,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207650273224044 [2023-09-01 02:57:08,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 231 transitions. [2023-09-01 02:57:08,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 231 transitions. [2023-09-01 02:57:08,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:08,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 231 transitions. [2023-09-01 02:57:08,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,885 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 41 flow. Second operand 3 states and 231 transitions. [2023-09-01 02:57:08,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 16 transitions, 67 flow [2023-09-01 02:57:08,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:57:08,886 INFO L231 Difference]: Finished difference. Result has 22 places, 16 transitions, 40 flow [2023-09-01 02:57:08,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2023-09-01 02:57:08,888 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 02:57:08,888 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 40 flow [2023-09-01 02:57:08,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:08,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:08,889 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-09-01 02:57:08,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 02:57:08,889 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:08,890 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:08,890 INFO L85 PathProgramCache]: Analyzing trace with hash 360022077, now seen corresponding path program 1 times [2023-09-01 02:57:08,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:08,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540414650] [2023-09-01 02:57:08,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:08,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:08,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:08,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:08,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540414650] [2023-09-01 02:57:08,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540414650] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:08,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:08,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 02:57:08,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573469808] [2023-09-01 02:57:08,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:08,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-09-01 02:57:08,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:08,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-09-01 02:57:08,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-09-01 02:57:09,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 183 [2023-09-01 02:57:09,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 16 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:09,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 183 [2023-09-01 02:57:09,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:09,061 INFO L130 PetriNetUnfolder]: 48/81 cut-off events. [2023-09-01 02:57:09,062 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 02:57:09,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 81 events. 48/81 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 193 event pairs, 19 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 166. Up to 78 conditions per place. [2023-09-01 02:57:09,063 INFO L137 encePairwiseOnDemand]: 181/183 looper letters, 12 selfloop transitions, 1 changer transitions 0/15 dead transitions. [2023-09-01 02:57:09,063 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 15 transitions, 64 flow [2023-09-01 02:57:09,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 02:57:09,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 02:57:09,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-09-01 02:57:09,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4517304189435337 [2023-09-01 02:57:09,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-09-01 02:57:09,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-09-01 02:57:09,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:09,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-09-01 02:57:09,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 183.0) internal successors, (732), 4 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,077 INFO L175 Difference]: Start difference. First operand has 22 places, 16 transitions, 40 flow. Second operand 3 states and 248 transitions. [2023-09-01 02:57:09,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 15 transitions, 64 flow [2023-09-01 02:57:09,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 15 transitions, 63 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:57:09,078 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 39 flow [2023-09-01 02:57:09,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=37, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=39, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-09-01 02:57:09,079 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -7 predicate places. [2023-09-01 02:57:09,080 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 39 flow [2023-09-01 02:57:09,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 4 states have internal predecessors, (317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:09,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:09,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 02:57:09,081 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:09,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1674693258, now seen corresponding path program 1 times [2023-09-01 02:57:09,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556885924] [2023-09-01 02:57:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:09,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:09,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:09,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556885924] [2023-09-01 02:57:09,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556885924] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:09,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:09,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:09,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346261947] [2023-09-01 02:57:09,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:09,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:09,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:09,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:09,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:09,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:09,564 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 39 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,564 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:09,564 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:09,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:09,642 INFO L130 PetriNetUnfolder]: 62/128 cut-off events. [2023-09-01 02:57:09,642 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 02:57:09,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270 conditions, 128 events. 62/128 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 407 event pairs, 2 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 266. Up to 61 conditions per place. [2023-09-01 02:57:09,643 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 29 selfloop transitions, 4 changer transitions 11/44 dead transitions. [2023-09-01 02:57:09,643 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 44 transitions, 193 flow [2023-09-01 02:57:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:09,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 574 transitions. [2023-09-01 02:57:09,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2023-09-01 02:57:09,646 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 574 transitions. [2023-09-01 02:57:09,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 574 transitions. [2023-09-01 02:57:09,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:09,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 574 transitions. [2023-09-01 02:57:09,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.0) internal successors, (574), 7 states have internal predecessors, (574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,651 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,651 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 39 flow. Second operand 7 states and 574 transitions. [2023-09-01 02:57:09,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 44 transitions, 193 flow [2023-09-01 02:57:09,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 44 transitions, 192 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 02:57:09,653 INFO L231 Difference]: Finished difference. Result has 32 places, 17 transitions, 74 flow [2023-09-01 02:57:09,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=74, PETRI_PLACES=32, PETRI_TRANSITIONS=17} [2023-09-01 02:57:09,656 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-09-01 02:57:09,657 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 17 transitions, 74 flow [2023-09-01 02:57:09,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:09,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:09,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:09,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 02:57:09,658 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:09,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:09,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1154660176, now seen corresponding path program 2 times [2023-09-01 02:57:09,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:09,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375739600] [2023-09-01 02:57:09,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:09,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:09,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:09,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:09,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375739600] [2023-09-01 02:57:09,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375739600] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:09,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:09,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:09,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409274863] [2023-09-01 02:57:09,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:09,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:09,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:09,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:09,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:10,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:10,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 17 transitions, 74 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,003 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:10,003 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:10,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:10,075 INFO L130 PetriNetUnfolder]: 58/122 cut-off events. [2023-09-01 02:57:10,075 INFO L131 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2023-09-01 02:57:10,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 122 events. 58/122 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 351 event pairs, 14 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 377. Up to 63 conditions per place. [2023-09-01 02:57:10,077 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 29 selfloop transitions, 8 changer transitions 8/45 dead transitions. [2023-09-01 02:57:10,077 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 262 flow [2023-09-01 02:57:10,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:10,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:10,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 571 transitions. [2023-09-01 02:57:10,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457455113192818 [2023-09-01 02:57:10,079 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:10,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,083 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,083 INFO L175 Difference]: Start difference. First operand has 32 places, 17 transitions, 74 flow. Second operand 7 states and 571 transitions. [2023-09-01 02:57:10,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 262 flow [2023-09-01 02:57:10,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 235 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-09-01 02:57:10,086 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 116 flow [2023-09-01 02:57:10,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=116, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-09-01 02:57:10,087 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-09-01 02:57:10,087 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 116 flow [2023-09-01 02:57:10,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:10,088 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:10,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 02:57:10,088 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:10,088 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:10,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1234050082, now seen corresponding path program 3 times [2023-09-01 02:57:10,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:10,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947829475] [2023-09-01 02:57:10,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:10,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:10,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:10,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:10,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947829475] [2023-09-01 02:57:10,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947829475] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:10,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:10,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:10,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147243456] [2023-09-01 02:57:10,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:10,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:10,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:10,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:10,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:10,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:10,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,411 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:10,411 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:10,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:10,479 INFO L130 PetriNetUnfolder]: 66/144 cut-off events. [2023-09-01 02:57:10,479 INFO L131 PetriNetUnfolder]: For 148/148 co-relation queries the response was YES. [2023-09-01 02:57:10,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 144 events. 66/144 cut-off events. For 148/148 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 469 event pairs, 14 based on Foata normal form. 1/137 useless extension candidates. Maximal degree in co-relation 484. Up to 67 conditions per place. [2023-09-01 02:57:10,480 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 34 selfloop transitions, 11 changer transitions 5/50 dead transitions. [2023-09-01 02:57:10,481 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 312 flow [2023-09-01 02:57:10,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:10,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:10,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 571 transitions. [2023-09-01 02:57:10,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4457455113192818 [2023-09-01 02:57:10,483 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:10,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 571 transitions. [2023-09-01 02:57:10,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,487 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 116 flow. Second operand 7 states and 571 transitions. [2023-09-01 02:57:10,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 312 flow [2023-09-01 02:57:10,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 299 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-09-01 02:57:10,490 INFO L231 Difference]: Finished difference. Result has 44 places, 27 transitions, 175 flow [2023-09-01 02:57:10,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=175, PETRI_PLACES=44, PETRI_TRANSITIONS=27} [2023-09-01 02:57:10,491 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 15 predicate places. [2023-09-01 02:57:10,491 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 27 transitions, 175 flow [2023-09-01 02:57:10,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:10,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 02:57:10,504 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:10,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1406370750, now seen corresponding path program 4 times [2023-09-01 02:57:10,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:10,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351995137] [2023-09-01 02:57:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:10,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:10,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:10,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:10,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351995137] [2023-09-01 02:57:10,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351995137] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:10,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:10,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837519921] [2023-09-01 02:57:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:10,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:10,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:10,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:10,836 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 27 transitions, 175 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:10,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:10,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:10,959 INFO L130 PetriNetUnfolder]: 62/140 cut-off events. [2023-09-01 02:57:10,960 INFO L131 PetriNetUnfolder]: For 276/276 co-relation queries the response was YES. [2023-09-01 02:57:10,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 140 events. 62/140 cut-off events. For 276/276 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 448 event pairs, 14 based on Foata normal form. 1/133 useless extension candidates. Maximal degree in co-relation 523. Up to 67 conditions per place. [2023-09-01 02:57:10,961 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 31 selfloop transitions, 12 changer transitions 8/51 dead transitions. [2023-09-01 02:57:10,961 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 365 flow [2023-09-01 02:57:10,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 572 transitions. [2023-09-01 02:57:10,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4465261514441842 [2023-09-01 02:57:10,963 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 572 transitions. [2023-09-01 02:57:10,963 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 572 transitions. [2023-09-01 02:57:10,964 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:10,964 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 572 transitions. [2023-09-01 02:57:10,965 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.71428571428571) internal successors, (572), 7 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,967 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,967 INFO L175 Difference]: Start difference. First operand has 44 places, 27 transitions, 175 flow. Second operand 7 states and 572 transitions. [2023-09-01 02:57:10,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 365 flow [2023-09-01 02:57:10,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 51 transitions, 346 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-09-01 02:57:10,973 INFO L231 Difference]: Finished difference. Result has 49 places, 28 transitions, 207 flow [2023-09-01 02:57:10,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=207, PETRI_PLACES=49, PETRI_TRANSITIONS=28} [2023-09-01 02:57:10,974 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-09-01 02:57:10,974 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 28 transitions, 207 flow [2023-09-01 02:57:10,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:10,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:10,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:10,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 02:57:10,976 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:10,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:10,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1151135002, now seen corresponding path program 5 times [2023-09-01 02:57:10,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:10,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052060450] [2023-09-01 02:57:10,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:11,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:11,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:11,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052060450] [2023-09-01 02:57:11,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052060450] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:11,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:11,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:11,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196810700] [2023-09-01 02:57:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:11,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:11,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:11,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:11,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:11,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 28 transitions, 207 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:11,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:11,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:11,369 INFO L130 PetriNetUnfolder]: 56/122 cut-off events. [2023-09-01 02:57:11,369 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2023-09-01 02:57:11,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 122 events. 56/122 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 357 event pairs, 10 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 483. Up to 67 conditions per place. [2023-09-01 02:57:11,370 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 29 selfloop transitions, 12 changer transitions 8/49 dead transitions. [2023-09-01 02:57:11,370 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 49 transitions, 380 flow [2023-09-01 02:57:11,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:11,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:11,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 570 transitions. [2023-09-01 02:57:11,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449648711943794 [2023-09-01 02:57:11,373 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 570 transitions. [2023-09-01 02:57:11,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 570 transitions. [2023-09-01 02:57:11,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:11,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 570 transitions. [2023-09-01 02:57:11,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.42857142857143) internal successors, (570), 7 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,377 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,377 INFO L175 Difference]: Start difference. First operand has 49 places, 28 transitions, 207 flow. Second operand 7 states and 570 transitions. [2023-09-01 02:57:11,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 49 transitions, 380 flow [2023-09-01 02:57:11,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 352 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-09-01 02:57:11,379 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 214 flow [2023-09-01 02:57:11,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=214, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2023-09-01 02:57:11,380 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-09-01 02:57:11,380 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 214 flow [2023-09-01 02:57:11,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:11,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:11,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 02:57:11,381 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:11,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:11,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1434076380, now seen corresponding path program 6 times [2023-09-01 02:57:11,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:11,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309172609] [2023-09-01 02:57:11,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:11,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:11,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:11,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:11,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309172609] [2023-09-01 02:57:11,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309172609] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 02:57:11,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 02:57:11,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-09-01 02:57:11,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770275419] [2023-09-01 02:57:11,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 02:57:11,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-09-01 02:57:11,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:11,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-09-01 02:57:11,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-09-01 02:57:11,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 183 [2023-09-01 02:57:11,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 214 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:11,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 183 [2023-09-01 02:57:11,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:11,708 INFO L130 PetriNetUnfolder]: 54/110 cut-off events. [2023-09-01 02:57:11,709 INFO L131 PetriNetUnfolder]: For 279/279 co-relation queries the response was YES. [2023-09-01 02:57:11,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 461 conditions, 110 events. 54/110 cut-off events. For 279/279 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 11 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 444. Up to 67 conditions per place. [2023-09-01 02:57:11,710 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 22 selfloop transitions, 12 changer transitions 8/42 dead transitions. [2023-09-01 02:57:11,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 42 transitions, 349 flow [2023-09-01 02:57:11,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-09-01 02:57:11,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-09-01 02:57:11,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 563 transitions. [2023-09-01 02:57:11,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43950039032006244 [2023-09-01 02:57:11,712 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 563 transitions. [2023-09-01 02:57:11,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 563 transitions. [2023-09-01 02:57:11,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:11,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 563 transitions. [2023-09-01 02:57:11,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.42857142857143) internal successors, (563), 7 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,715 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,715 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 183.0) internal successors, (1464), 8 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,715 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 214 flow. Second operand 7 states and 563 transitions. [2023-09-01 02:57:11,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 42 transitions, 349 flow [2023-09-01 02:57:11,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 42 transitions, 317 flow, removed 5 selfloop flow, removed 6 redundant places. [2023-09-01 02:57:11,718 INFO L231 Difference]: Finished difference. Result has 52 places, 28 transitions, 216 flow [2023-09-01 02:57:11,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=216, PETRI_PLACES=52, PETRI_TRANSITIONS=28} [2023-09-01 02:57:11,719 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 23 predicate places. [2023-09-01 02:57:11,719 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 28 transitions, 216 flow [2023-09-01 02:57:11,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:11,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:11,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:11,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 02:57:11,720 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:11,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:11,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1347996607, now seen corresponding path program 1 times [2023-09-01 02:57:11,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:11,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381169323] [2023-09-01 02:57:11,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:11,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:11,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:11,925 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:11,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:11,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381169323] [2023-09-01 02:57:11,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381169323] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:11,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913676464] [2023-09-01 02:57:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:11,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:11,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:11,929 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:11,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 02:57:12,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:12,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:12,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:12,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:12,471 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:12,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913676464] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:12,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:12,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:12,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639384259] [2023-09-01 02:57:12,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:12,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:12,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:12,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:12,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:12,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:12,606 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 28 transitions, 216 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:12,606 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:12,606 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:12,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:13,206 INFO L130 PetriNetUnfolder]: 142/289 cut-off events. [2023-09-01 02:57:13,206 INFO L131 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2023-09-01 02:57:13,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 982 conditions, 289 events. 142/289 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1133 event pairs, 4 based on Foata normal form. 8/269 useless extension candidates. Maximal degree in co-relation 965. Up to 105 conditions per place. [2023-09-01 02:57:13,208 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 75 selfloop transitions, 29 changer transitions 10/114 dead transitions. [2023-09-01 02:57:13,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 114 transitions, 739 flow [2023-09-01 02:57:13,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:57:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:57:13,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1333 transitions. [2023-09-01 02:57:13,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284795885567342 [2023-09-01 02:57:13,213 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1333 transitions. [2023-09-01 02:57:13,213 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1333 transitions. [2023-09-01 02:57:13,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:13,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1333 transitions. [2023-09-01 02:57:13,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 78.41176470588235) internal successors, (1333), 17 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:13,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:13,221 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:13,221 INFO L175 Difference]: Start difference. First operand has 52 places, 28 transitions, 216 flow. Second operand 17 states and 1333 transitions. [2023-09-01 02:57:13,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 114 transitions, 739 flow [2023-09-01 02:57:13,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 114 transitions, 670 flow, removed 18 selfloop flow, removed 9 redundant places. [2023-09-01 02:57:13,225 INFO L231 Difference]: Finished difference. Result has 62 places, 46 transitions, 347 flow [2023-09-01 02:57:13,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=347, PETRI_PLACES=62, PETRI_TRANSITIONS=46} [2023-09-01 02:57:13,226 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-09-01 02:57:13,226 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 46 transitions, 347 flow [2023-09-01 02:57:13,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:13,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:13,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:13,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 02:57:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-09-01 02:57:13,434 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:13,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:13,435 INFO L85 PathProgramCache]: Analyzing trace with hash -415795115, now seen corresponding path program 2 times [2023-09-01 02:57:13,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:13,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113146733] [2023-09-01 02:57:13,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:13,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:13,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:13,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:13,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:13,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113146733] [2023-09-01 02:57:13,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113146733] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:13,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938577656] [2023-09-01 02:57:13,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:13,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:13,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:13,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:13,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 02:57:13,727 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:13,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:13,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:13,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:13,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:13,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:14,095 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:14,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938577656] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:14,096 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:14,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:14,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867915765] [2023-09-01 02:57:14,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:14,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:14,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:14,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:14,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:14,218 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 46 transitions, 347 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:14,218 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:14,218 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:14,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:14,813 INFO L130 PetriNetUnfolder]: 168/353 cut-off events. [2023-09-01 02:57:14,813 INFO L131 PetriNetUnfolder]: For 684/684 co-relation queries the response was YES. [2023-09-01 02:57:14,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1406 conditions, 353 events. 168/353 cut-off events. For 684/684 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1555 event pairs, 10 based on Foata normal form. 2/343 useless extension candidates. Maximal degree in co-relation 1387. Up to 133 conditions per place. [2023-09-01 02:57:14,816 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 82 selfloop transitions, 43 changer transitions 10/135 dead transitions. [2023-09-01 02:57:14,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 135 transitions, 985 flow [2023-09-01 02:57:14,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 02:57:14,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 02:57:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1637 transitions. [2023-09-01 02:57:14,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42596929482175383 [2023-09-01 02:57:14,821 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1637 transitions. [2023-09-01 02:57:14,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1637 transitions. [2023-09-01 02:57:14,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:14,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1637 transitions. [2023-09-01 02:57:14,825 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 77.95238095238095) internal successors, (1637), 21 states have internal predecessors, (1637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:14,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 183.0) internal successors, (4026), 22 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:14,830 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 183.0) internal successors, (4026), 22 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:14,830 INFO L175 Difference]: Start difference. First operand has 62 places, 46 transitions, 347 flow. Second operand 21 states and 1637 transitions. [2023-09-01 02:57:14,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 135 transitions, 985 flow [2023-09-01 02:57:14,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 135 transitions, 843 flow, removed 60 selfloop flow, removed 5 redundant places. [2023-09-01 02:57:14,836 INFO L231 Difference]: Finished difference. Result has 82 places, 61 transitions, 471 flow [2023-09-01 02:57:14,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=471, PETRI_PLACES=82, PETRI_TRANSITIONS=61} [2023-09-01 02:57:14,837 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2023-09-01 02:57:14,837 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 61 transitions, 471 flow [2023-09-01 02:57:14,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:14,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:14,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:14,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:15,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-09-01 02:57:15,044 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:15,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:15,044 INFO L85 PathProgramCache]: Analyzing trace with hash -498710195, now seen corresponding path program 3 times [2023-09-01 02:57:15,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:15,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589739901] [2023-09-01 02:57:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:15,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:15,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:15,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:15,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589739901] [2023-09-01 02:57:15,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589739901] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:15,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061798491] [2023-09-01 02:57:15,264 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:57:15,265 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:15,265 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:15,270 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:15,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 02:57:15,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 02:57:15,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:15,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:15,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:15,447 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061798491] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:15,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 02:57:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529476493] [2023-09-01 02:57:15,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:15,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:57:15,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:15,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:57:15,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:57:15,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:15,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 61 transitions, 471 flow. Second operand has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:15,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:15,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:15,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:16,281 INFO L130 PetriNetUnfolder]: 168/351 cut-off events. [2023-09-01 02:57:16,281 INFO L131 PetriNetUnfolder]: For 1201/1201 co-relation queries the response was YES. [2023-09-01 02:57:16,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1530 conditions, 351 events. 168/351 cut-off events. For 1201/1201 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1541 event pairs, 6 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 1507. Up to 88 conditions per place. [2023-09-01 02:57:16,284 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 79 selfloop transitions, 39 changer transitions 10/128 dead transitions. [2023-09-01 02:57:16,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 128 transitions, 988 flow [2023-09-01 02:57:16,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 02:57:16,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 02:57:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1413 transitions. [2023-09-01 02:57:16,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42896174863387976 [2023-09-01 02:57:16,290 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1413 transitions. [2023-09-01 02:57:16,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1413 transitions. [2023-09-01 02:57:16,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:16,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1413 transitions. [2023-09-01 02:57:16,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 78.5) internal successors, (1413), 18 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:16,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:16,300 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:16,301 INFO L175 Difference]: Start difference. First operand has 82 places, 61 transitions, 471 flow. Second operand 18 states and 1413 transitions. [2023-09-01 02:57:16,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 128 transitions, 988 flow [2023-09-01 02:57:16,307 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 128 transitions, 902 flow, removed 19 selfloop flow, removed 8 redundant places. [2023-09-01 02:57:16,308 INFO L231 Difference]: Finished difference. Result has 91 places, 60 transitions, 474 flow [2023-09-01 02:57:16,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=474, PETRI_PLACES=91, PETRI_TRANSITIONS=60} [2023-09-01 02:57:16,309 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2023-09-01 02:57:16,310 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 60 transitions, 474 flow [2023-09-01 02:57:16,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.0) internal successors, (1332), 18 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:16,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:16,311 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:16,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:16,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:16,517 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:16,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash -93496983, now seen corresponding path program 4 times [2023-09-01 02:57:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:16,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879782913] [2023-09-01 02:57:16,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:16,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:16,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:16,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879782913] [2023-09-01 02:57:16,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879782913] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439611056] [2023-09-01 02:57:16,667 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:57:16,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:16,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:16,669 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:16,671 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-09-01 02:57:16,724 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:57:16,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:16,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:16,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:16,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:16,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:17,021 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:17,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439611056] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:17,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:17,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448856089] [2023-09-01 02:57:17,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:17,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:17,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:17,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:17,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:17,210 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 60 transitions, 474 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:17,210 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:17,210 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:17,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:17,541 INFO L130 PetriNetUnfolder]: 177/370 cut-off events. [2023-09-01 02:57:17,542 INFO L131 PetriNetUnfolder]: For 1297/1297 co-relation queries the response was YES. [2023-09-01 02:57:17,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1627 conditions, 370 events. 177/370 cut-off events. For 1297/1297 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1632 event pairs, 8 based on Foata normal form. 2/366 useless extension candidates. Maximal degree in co-relation 1602. Up to 163 conditions per place. [2023-09-01 02:57:17,557 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 53 selfloop transitions, 40 changer transitions 10/103 dead transitions. [2023-09-01 02:57:17,557 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 103 transitions, 880 flow [2023-09-01 02:57:17,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:57:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:57:17,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1008 transitions. [2023-09-01 02:57:17,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42370744010088274 [2023-09-01 02:57:17,563 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1008 transitions. [2023-09-01 02:57:17,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1008 transitions. [2023-09-01 02:57:17,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:17,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1008 transitions. [2023-09-01 02:57:17,566 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.53846153846153) internal successors, (1008), 13 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:17,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:17,570 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:17,570 INFO L175 Difference]: Start difference. First operand has 91 places, 60 transitions, 474 flow. Second operand 13 states and 1008 transitions. [2023-09-01 02:57:17,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 103 transitions, 880 flow [2023-09-01 02:57:17,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 103 transitions, 770 flow, removed 13 selfloop flow, removed 13 redundant places. [2023-09-01 02:57:17,577 INFO L231 Difference]: Finished difference. Result has 91 places, 69 transitions, 553 flow [2023-09-01 02:57:17,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=553, PETRI_PLACES=91, PETRI_TRANSITIONS=69} [2023-09-01 02:57:17,577 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2023-09-01 02:57:17,577 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 69 transitions, 553 flow [2023-09-01 02:57:17,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:17,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:17,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:17,587 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:17,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-09-01 02:57:17,786 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:17,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:17,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1894359411, now seen corresponding path program 5 times [2023-09-01 02:57:17,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:17,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614929515] [2023-09-01 02:57:17,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:17,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:17,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614929515] [2023-09-01 02:57:17,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614929515] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:17,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322018175] [2023-09-01 02:57:17,956 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:57:17,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:17,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:17,957 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:17,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-09-01 02:57:18,012 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:18,012 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:18,013 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:18,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:18,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:18,376 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:18,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [322018175] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:18,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:18,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:18,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662506884] [2023-09-01 02:57:18,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:18,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:18,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:18,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:18,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:18,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:18,544 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 69 transitions, 553 flow. Second operand has 19 states, 19 states have (on average 74.05263157894737) internal successors, (1407), 19 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:18,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:18,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:18,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:19,337 INFO L130 PetriNetUnfolder]: 226/491 cut-off events. [2023-09-01 02:57:19,337 INFO L131 PetriNetUnfolder]: For 1463/1463 co-relation queries the response was YES. [2023-09-01 02:57:19,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2093 conditions, 491 events. 226/491 cut-off events. For 1463/1463 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2504 event pairs, 6 based on Foata normal form. 4/491 useless extension candidates. Maximal degree in co-relation 2066. Up to 181 conditions per place. [2023-09-01 02:57:19,341 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 73 selfloop transitions, 52 changer transitions 25/150 dead transitions. [2023-09-01 02:57:19,341 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 150 transitions, 1228 flow [2023-09-01 02:57:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 02:57:19,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 02:57:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1477 transitions. [2023-09-01 02:57:19,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4247914869140063 [2023-09-01 02:57:19,345 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1477 transitions. [2023-09-01 02:57:19,345 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1477 transitions. [2023-09-01 02:57:19,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:19,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1477 transitions. [2023-09-01 02:57:19,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.73684210526316) internal successors, (1477), 19 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:19,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:19,370 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:19,370 INFO L175 Difference]: Start difference. First operand has 91 places, 69 transitions, 553 flow. Second operand 19 states and 1477 transitions. [2023-09-01 02:57:19,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 150 transitions, 1228 flow [2023-09-01 02:57:19,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 150 transitions, 1178 flow, removed 13 selfloop flow, removed 9 redundant places. [2023-09-01 02:57:19,380 INFO L231 Difference]: Finished difference. Result has 110 places, 84 transitions, 804 flow [2023-09-01 02:57:19,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=804, PETRI_PLACES=110, PETRI_TRANSITIONS=84} [2023-09-01 02:57:19,382 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 81 predicate places. [2023-09-01 02:57:19,382 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 84 transitions, 804 flow [2023-09-01 02:57:19,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.05263157894737) internal successors, (1407), 19 states have internal predecessors, (1407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:19,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:19,383 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:19,387 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-09-01 02:57:19,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-09-01 02:57:19,588 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:19,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:19,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1813029981, now seen corresponding path program 6 times [2023-09-01 02:57:19,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:19,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402313820] [2023-09-01 02:57:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:19,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:19,769 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:19,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402313820] [2023-09-01 02:57:19,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402313820] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:19,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250401213] [2023-09-01 02:57:19,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:57:19,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:19,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:19,773 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:19,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-09-01 02:57:19,844 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-09-01 02:57:19,845 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:19,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:19,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:20,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:20,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:20,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:20,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250401213] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:20,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:20,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:20,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664193547] [2023-09-01 02:57:20,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:20,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:20,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:20,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:20,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:20,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:20,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 84 transitions, 804 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:20,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:20,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:20,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:20,959 INFO L130 PetriNetUnfolder]: 211/447 cut-off events. [2023-09-01 02:57:20,959 INFO L131 PetriNetUnfolder]: For 2887/2887 co-relation queries the response was YES. [2023-09-01 02:57:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2360 conditions, 447 events. 211/447 cut-off events. For 2887/2887 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2160 event pairs, 6 based on Foata normal form. 3/446 useless extension candidates. Maximal degree in co-relation 2325. Up to 183 conditions per place. [2023-09-01 02:57:20,963 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 61 selfloop transitions, 57 changer transitions 19/137 dead transitions. [2023-09-01 02:57:20,964 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 137 transitions, 1328 flow [2023-09-01 02:57:20,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-09-01 02:57:20,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-09-01 02:57:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1465 transitions. [2023-09-01 02:57:20,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42134023583549035 [2023-09-01 02:57:20,988 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1465 transitions. [2023-09-01 02:57:20,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1465 transitions. [2023-09-01 02:57:20,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:20,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1465 transitions. [2023-09-01 02:57:20,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 77.10526315789474) internal successors, (1465), 19 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:20,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:20,996 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 183.0) internal successors, (3660), 20 states have internal predecessors, (3660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:20,996 INFO L175 Difference]: Start difference. First operand has 110 places, 84 transitions, 804 flow. Second operand 19 states and 1465 transitions. [2023-09-01 02:57:20,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 137 transitions, 1328 flow [2023-09-01 02:57:21,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 137 transitions, 1241 flow, removed 23 selfloop flow, removed 10 redundant places. [2023-09-01 02:57:21,010 INFO L231 Difference]: Finished difference. Result has 116 places, 87 transitions, 906 flow [2023-09-01 02:57:21,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=906, PETRI_PLACES=116, PETRI_TRANSITIONS=87} [2023-09-01 02:57:21,011 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 87 predicate places. [2023-09-01 02:57:21,011 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 87 transitions, 906 flow [2023-09-01 02:57:21,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:21,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:21,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:21,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-09-01 02:57:21,217 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:21,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1889875605, now seen corresponding path program 7 times [2023-09-01 02:57:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916281369] [2023-09-01 02:57:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:21,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:21,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:21,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916281369] [2023-09-01 02:57:21,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916281369] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:21,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368671568] [2023-09-01 02:57:21,359 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:57:21,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:21,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:21,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:21,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-09-01 02:57:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:21,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:21,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:21,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:21,705 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:21,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [368671568] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:21,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:21,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:21,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400548778] [2023-09-01 02:57:21,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:21,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:21,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:21,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:21,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:21,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:21,817 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 87 transitions, 906 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:21,817 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:21,817 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:21,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:22,087 INFO L130 PetriNetUnfolder]: 211/442 cut-off events. [2023-09-01 02:57:22,087 INFO L131 PetriNetUnfolder]: For 2888/2888 co-relation queries the response was YES. [2023-09-01 02:57:22,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2461 conditions, 442 events. 211/442 cut-off events. For 2888/2888 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2111 event pairs, 7 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2427. Up to 242 conditions per place. [2023-09-01 02:57:22,091 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 73 selfloop transitions, 32 changer transitions 10/115 dead transitions. [2023-09-01 02:57:22,091 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 115 transitions, 1271 flow [2023-09-01 02:57:22,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-09-01 02:57:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-09-01 02:57:22,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 847 transitions. [2023-09-01 02:57:22,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4207650273224044 [2023-09-01 02:57:22,094 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 847 transitions. [2023-09-01 02:57:22,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 847 transitions. [2023-09-01 02:57:22,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:22,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 847 transitions. [2023-09-01 02:57:22,096 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 77.0) internal successors, (847), 11 states have internal predecessors, (847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:22,098 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:22,098 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 183.0) internal successors, (2196), 12 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:22,098 INFO L175 Difference]: Start difference. First operand has 116 places, 87 transitions, 906 flow. Second operand 11 states and 847 transitions. [2023-09-01 02:57:22,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 115 transitions, 1271 flow [2023-09-01 02:57:22,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 115 transitions, 1094 flow, removed 21 selfloop flow, removed 16 redundant places. [2023-09-01 02:57:22,110 INFO L231 Difference]: Finished difference. Result has 108 places, 89 transitions, 831 flow [2023-09-01 02:57:22,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=831, PETRI_PLACES=108, PETRI_TRANSITIONS=89} [2023-09-01 02:57:22,111 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 79 predicate places. [2023-09-01 02:57:22,111 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 89 transitions, 831 flow [2023-09-01 02:57:22,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:22,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:22,112 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:22,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:22,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:22,317 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:22,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:22,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1236406595, now seen corresponding path program 8 times [2023-09-01 02:57:22,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:22,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829792885] [2023-09-01 02:57:22,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:22,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:22,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829792885] [2023-09-01 02:57:22,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829792885] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:22,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53358405] [2023-09-01 02:57:22,447 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:22,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:22,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:22,449 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:22,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-09-01 02:57:22,533 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:22,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:22,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:22,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:22,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:22,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:22,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53358405] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:22,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:22,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:22,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552372897] [2023-09-01 02:57:22,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:22,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:22,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:22,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:22,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:23,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:23,008 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 89 transitions, 831 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:23,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:23,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:23,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:23,250 INFO L130 PetriNetUnfolder]: 213/448 cut-off events. [2023-09-01 02:57:23,250 INFO L131 PetriNetUnfolder]: For 2413/2413 co-relation queries the response was YES. [2023-09-01 02:57:23,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 448 events. 213/448 cut-off events. For 2413/2413 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2141 event pairs, 7 based on Foata normal form. 2/446 useless extension candidates. Maximal degree in co-relation 2294. Up to 237 conditions per place. [2023-09-01 02:57:23,254 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 76 selfloop transitions, 37 changer transitions 10/123 dead transitions. [2023-09-01 02:57:23,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 123 transitions, 1272 flow [2023-09-01 02:57:23,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-09-01 02:57:23,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-09-01 02:57:23,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 926 transitions. [2023-09-01 02:57:23,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216757741347905 [2023-09-01 02:57:23,271 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 926 transitions. [2023-09-01 02:57:23,271 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 926 transitions. [2023-09-01 02:57:23,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:23,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 926 transitions. [2023-09-01 02:57:23,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 77.16666666666667) internal successors, (926), 12 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:23,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:23,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 183.0) internal successors, (2379), 13 states have internal predecessors, (2379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:23,276 INFO L175 Difference]: Start difference. First operand has 108 places, 89 transitions, 831 flow. Second operand 12 states and 926 transitions. [2023-09-01 02:57:23,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 123 transitions, 1272 flow [2023-09-01 02:57:23,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 123 transitions, 1226 flow, removed 3 selfloop flow, removed 7 redundant places. [2023-09-01 02:57:23,287 INFO L231 Difference]: Finished difference. Result has 114 places, 96 transitions, 963 flow [2023-09-01 02:57:23,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=789, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=963, PETRI_PLACES=114, PETRI_TRANSITIONS=96} [2023-09-01 02:57:23,287 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 85 predicate places. [2023-09-01 02:57:23,288 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 96 transitions, 963 flow [2023-09-01 02:57:23,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:23,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:23,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:23,294 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:23,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:23,494 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:23,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:23,494 INFO L85 PathProgramCache]: Analyzing trace with hash 1339027703, now seen corresponding path program 9 times [2023-09-01 02:57:23,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:23,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601213854] [2023-09-01 02:57:23,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:23,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:23,646 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:23,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:23,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601213854] [2023-09-01 02:57:23,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601213854] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:23,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286030344] [2023-09-01 02:57:23,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:57:23,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:23,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:23,648 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:23,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-09-01 02:57:23,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 02:57:23,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:23,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:23,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:23,862 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:23,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:23,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:23,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286030344] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:23,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:23,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:23,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802267875] [2023-09-01 02:57:23,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:23,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:23,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:23,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:23,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:24,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:24,146 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 96 transitions, 963 flow. Second operand has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:24,146 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:24,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:24,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:24,601 INFO L130 PetriNetUnfolder]: 227/496 cut-off events. [2023-09-01 02:57:24,602 INFO L131 PetriNetUnfolder]: For 3418/3418 co-relation queries the response was YES. [2023-09-01 02:57:24,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2715 conditions, 496 events. 227/496 cut-off events. For 3418/3418 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2539 event pairs, 7 based on Foata normal form. 2/494 useless extension candidates. Maximal degree in co-relation 2678. Up to 284 conditions per place. [2023-09-01 02:57:24,606 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 96 selfloop transitions, 49 changer transitions 10/155 dead transitions. [2023-09-01 02:57:24,607 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 155 transitions, 1604 flow [2023-09-01 02:57:24,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:57:24,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:57:24,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1317 transitions. [2023-09-01 02:57:24,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42333654773384766 [2023-09-01 02:57:24,609 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1317 transitions. [2023-09-01 02:57:24,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1317 transitions. [2023-09-01 02:57:24,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:24,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1317 transitions. [2023-09-01 02:57:24,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 77.47058823529412) internal successors, (1317), 17 states have internal predecessors, (1317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:24,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:24,615 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:24,616 INFO L175 Difference]: Start difference. First operand has 114 places, 96 transitions, 963 flow. Second operand 17 states and 1317 transitions. [2023-09-01 02:57:24,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 155 transitions, 1604 flow [2023-09-01 02:57:24,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 155 transitions, 1557 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-09-01 02:57:24,631 INFO L231 Difference]: Finished difference. Result has 128 places, 105 transitions, 1202 flow [2023-09-01 02:57:24,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=916, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1202, PETRI_PLACES=128, PETRI_TRANSITIONS=105} [2023-09-01 02:57:24,632 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2023-09-01 02:57:24,632 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 105 transitions, 1202 flow [2023-09-01 02:57:24,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.0) internal successors, (1406), 19 states have internal predecessors, (1406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:24,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:24,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:24,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:24,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:24,838 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:24,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:24,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1256112623, now seen corresponding path program 10 times [2023-09-01 02:57:24,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:24,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696143963] [2023-09-01 02:57:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:24,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696143963] [2023-09-01 02:57:24,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696143963] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:24,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965891558] [2023-09-01 02:57:24,996 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:57:24,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:24,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:24,997 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:25,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-09-01 02:57:25,056 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:57:25,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:25,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:25,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:25,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:25,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:25,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965891558] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:25,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:25,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-09-01 02:57:25,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456038990] [2023-09-01 02:57:25,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:25,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:25,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:25,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:25,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:25,536 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 105 transitions, 1202 flow. Second operand has 19 states, 19 states have (on average 74.10526315789474) internal successors, (1408), 19 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:25,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:25,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:25,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:26,012 INFO L130 PetriNetUnfolder]: 225/482 cut-off events. [2023-09-01 02:57:26,012 INFO L131 PetriNetUnfolder]: For 5101/5101 co-relation queries the response was YES. [2023-09-01 02:57:26,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 482 events. 225/482 cut-off events. For 5101/5101 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2428 event pairs, 7 based on Foata normal form. 2/480 useless extension candidates. Maximal degree in co-relation 2951. Up to 284 conditions per place. [2023-09-01 02:57:26,016 INFO L137 encePairwiseOnDemand]: 174/183 looper letters, 88 selfloop transitions, 44 changer transitions 10/142 dead transitions. [2023-09-01 02:57:26,016 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 142 transitions, 1645 flow [2023-09-01 02:57:26,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:57:26,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:57:26,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1015 transitions. [2023-09-01 02:57:26,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266498528793611 [2023-09-01 02:57:26,018 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1015 transitions. [2023-09-01 02:57:26,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1015 transitions. [2023-09-01 02:57:26,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:26,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1015 transitions. [2023-09-01 02:57:26,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.07692307692308) internal successors, (1015), 13 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:26,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:26,023 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:26,023 INFO L175 Difference]: Start difference. First operand has 128 places, 105 transitions, 1202 flow. Second operand 13 states and 1015 transitions. [2023-09-01 02:57:26,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 142 transitions, 1645 flow [2023-09-01 02:57:26,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 142 transitions, 1518 flow, removed 40 selfloop flow, removed 5 redundant places. [2023-09-01 02:57:26,044 INFO L231 Difference]: Finished difference. Result has 128 places, 101 transitions, 1133 flow [2023-09-01 02:57:26,044 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1057, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1133, PETRI_PLACES=128, PETRI_TRANSITIONS=101} [2023-09-01 02:57:26,045 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 99 predicate places. [2023-09-01 02:57:26,045 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 101 transitions, 1133 flow [2023-09-01 02:57:26,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 74.10526315789474) internal successors, (1408), 19 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:26,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:26,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:26,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:26,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-09-01 02:57:26,250 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:26,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:26,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1087618343, now seen corresponding path program 1 times [2023-09-01 02:57:26,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:26,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032825038] [2023-09-01 02:57:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:26,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:26,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032825038] [2023-09-01 02:57:26,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032825038] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:26,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329564481] [2023-09-01 02:57:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:26,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:26,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:26,376 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-09-01 02:57:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:26,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:26,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:26,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:26,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:26,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329564481] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:26,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:26,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 02:57:26,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463749142] [2023-09-01 02:57:26,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:26,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:57:26,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:57:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:57:26,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:26,857 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 101 transitions, 1133 flow. Second operand has 18 states, 18 states have (on average 73.77777777777777) internal successors, (1328), 18 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:26,857 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:26,857 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:26,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:27,245 INFO L130 PetriNetUnfolder]: 247/525 cut-off events. [2023-09-01 02:57:27,245 INFO L131 PetriNetUnfolder]: For 5814/5814 co-relation queries the response was YES. [2023-09-01 02:57:27,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3228 conditions, 525 events. 247/525 cut-off events. For 5814/5814 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2666 event pairs, 28 based on Foata normal form. 3/524 useless extension candidates. Maximal degree in co-relation 3185. Up to 105 conditions per place. [2023-09-01 02:57:27,253 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 80 selfloop transitions, 48 changer transitions 32/160 dead transitions. [2023-09-01 02:57:27,253 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 160 transitions, 1794 flow [2023-09-01 02:57:27,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-09-01 02:57:27,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-09-01 02:57:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1100 transitions. [2023-09-01 02:57:27,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42935206869633097 [2023-09-01 02:57:27,255 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1100 transitions. [2023-09-01 02:57:27,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1100 transitions. [2023-09-01 02:57:27,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:27,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1100 transitions. [2023-09-01 02:57:27,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 78.57142857142857) internal successors, (1100), 14 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:27,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:27,260 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 183.0) internal successors, (2745), 15 states have internal predecessors, (2745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:27,260 INFO L175 Difference]: Start difference. First operand has 128 places, 101 transitions, 1133 flow. Second operand 14 states and 1100 transitions. [2023-09-01 02:57:27,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 160 transitions, 1794 flow [2023-09-01 02:57:27,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 160 transitions, 1655 flow, removed 16 selfloop flow, removed 10 redundant places. [2023-09-01 02:57:27,281 INFO L231 Difference]: Finished difference. Result has 134 places, 95 transitions, 1089 flow [2023-09-01 02:57:27,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1024, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1089, PETRI_PLACES=134, PETRI_TRANSITIONS=95} [2023-09-01 02:57:27,282 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 105 predicate places. [2023-09-01 02:57:27,282 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 95 transitions, 1089 flow [2023-09-01 02:57:27,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.77777777777777) internal successors, (1328), 18 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:27,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:27,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:27,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:27,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-09-01 02:57:27,483 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:27,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:27,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1720026777, now seen corresponding path program 2 times [2023-09-01 02:57:27,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:27,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044105201] [2023-09-01 02:57:27,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:27,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:27,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:27,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:27,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044105201] [2023-09-01 02:57:27,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044105201] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:27,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962594115] [2023-09-01 02:57:27,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:27,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:27,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:27,636 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:27,637 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-09-01 02:57:27,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:27,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:27,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:27,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:27,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:27,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:27,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:27,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962594115] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:27,938 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:27,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 02:57:27,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373052698] [2023-09-01 02:57:27,939 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:27,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:27,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:27,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:27,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:28,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:28,098 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 95 transitions, 1089 flow. Second operand has 19 states, 19 states have (on average 73.6842105263158) internal successors, (1400), 19 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:28,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:28,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:28,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:28,582 INFO L130 PetriNetUnfolder]: 247/515 cut-off events. [2023-09-01 02:57:28,583 INFO L131 PetriNetUnfolder]: For 7486/7486 co-relation queries the response was YES. [2023-09-01 02:57:28,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3352 conditions, 515 events. 247/515 cut-off events. For 7486/7486 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2550 event pairs, 18 based on Foata normal form. 3/518 useless extension candidates. Maximal degree in co-relation 3304. Up to 111 conditions per place. [2023-09-01 02:57:28,588 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 101 selfloop transitions, 46 changer transitions 29/176 dead transitions. [2023-09-01 02:57:28,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 176 transitions, 1992 flow [2023-09-01 02:57:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 02:57:28,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 02:57:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1413 transitions. [2023-09-01 02:57:28,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42896174863387976 [2023-09-01 02:57:28,591 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1413 transitions. [2023-09-01 02:57:28,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1413 transitions. [2023-09-01 02:57:28,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:28,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1413 transitions. [2023-09-01 02:57:28,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 78.5) internal successors, (1413), 18 states have internal predecessors, (1413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:28,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:28,597 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:28,597 INFO L175 Difference]: Start difference. First operand has 134 places, 95 transitions, 1089 flow. Second operand 18 states and 1413 transitions. [2023-09-01 02:57:28,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 176 transitions, 1992 flow [2023-09-01 02:57:28,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 176 transitions, 1806 flow, removed 44 selfloop flow, removed 13 redundant places. [2023-09-01 02:57:28,620 INFO L231 Difference]: Finished difference. Result has 138 places, 93 transitions, 1042 flow [2023-09-01 02:57:28,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=969, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1042, PETRI_PLACES=138, PETRI_TRANSITIONS=93} [2023-09-01 02:57:28,620 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 109 predicate places. [2023-09-01 02:57:28,620 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 93 transitions, 1042 flow [2023-09-01 02:57:28,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.6842105263158) internal successors, (1400), 19 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:28,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:28,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:28,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:28,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-09-01 02:57:28,827 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:28,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:28,827 INFO L85 PathProgramCache]: Analyzing trace with hash -666729695, now seen corresponding path program 3 times [2023-09-01 02:57:28,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:28,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579190880] [2023-09-01 02:57:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:28,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:28,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:28,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:28,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:28,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579190880] [2023-09-01 02:57:28,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579190880] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:28,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560809086] [2023-09-01 02:57:28,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:57:28,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:28,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:28,985 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:29,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-09-01 02:57:29,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:57:29,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:29,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:29,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:29,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:29,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:29,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:29,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560809086] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:29,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:29,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 02:57:29,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390028292] [2023-09-01 02:57:29,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:29,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:29,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:29,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:29,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:29,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:29,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 93 transitions, 1042 flow. Second operand has 19 states, 19 states have (on average 73.57894736842105) internal successors, (1398), 19 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:29,453 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:29,453 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:29,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:29,963 INFO L130 PetriNetUnfolder]: 218/461 cut-off events. [2023-09-01 02:57:29,963 INFO L131 PetriNetUnfolder]: For 6797/6797 co-relation queries the response was YES. [2023-09-01 02:57:29,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2941 conditions, 461 events. 218/461 cut-off events. For 6797/6797 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2207 event pairs, 26 based on Foata normal form. 2/463 useless extension candidates. Maximal degree in co-relation 2892. Up to 106 conditions per place. [2023-09-01 02:57:29,968 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 98 selfloop transitions, 54 changer transitions 11/163 dead transitions. [2023-09-01 02:57:29,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 163 transitions, 1815 flow [2023-09-01 02:57:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 02:57:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 02:57:29,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1405 transitions. [2023-09-01 02:57:29,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4265330904675167 [2023-09-01 02:57:29,972 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1405 transitions. [2023-09-01 02:57:29,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1405 transitions. [2023-09-01 02:57:29,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:29,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1405 transitions. [2023-09-01 02:57:29,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 78.05555555555556) internal successors, (1405), 18 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:29,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:29,978 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:29,979 INFO L175 Difference]: Start difference. First operand has 138 places, 93 transitions, 1042 flow. Second operand 18 states and 1405 transitions. [2023-09-01 02:57:29,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 163 transitions, 1815 flow [2023-09-01 02:57:29,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 163 transitions, 1619 flow, removed 52 selfloop flow, removed 16 redundant places. [2023-09-01 02:57:29,994 INFO L231 Difference]: Finished difference. Result has 140 places, 104 transitions, 1188 flow [2023-09-01 02:57:29,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1188, PETRI_PLACES=140, PETRI_TRANSITIONS=104} [2023-09-01 02:57:29,994 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 111 predicate places. [2023-09-01 02:57:29,994 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 104 transitions, 1188 flow [2023-09-01 02:57:29,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.57894736842105) internal successors, (1398), 19 states have internal predecessors, (1398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:29,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:29,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:30,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:30,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-09-01 02:57:30,200 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:30,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -749644775, now seen corresponding path program 4 times [2023-09-01 02:57:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:30,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157699808] [2023-09-01 02:57:30,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:30,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:30,342 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:30,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:30,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157699808] [2023-09-01 02:57:30,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157699808] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:30,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253303876] [2023-09-01 02:57:30,344 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:57:30,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:30,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:30,345 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:30,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-09-01 02:57:30,422 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:57:30,422 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:30,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:30,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:30,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:30,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:30,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:30,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253303876] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:30,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:30,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2023-09-01 02:57:30,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680781222] [2023-09-01 02:57:30,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-09-01 02:57:30,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:30,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-09-01 02:57:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-09-01 02:57:30,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:30,854 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 104 transitions, 1188 flow. Second operand has 19 states, 19 states have (on average 73.6842105263158) internal successors, (1400), 19 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:30,854 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:30,855 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:30,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:31,309 INFO L130 PetriNetUnfolder]: 214/445 cut-off events. [2023-09-01 02:57:31,309 INFO L131 PetriNetUnfolder]: For 5660/5660 co-relation queries the response was YES. [2023-09-01 02:57:31,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2810 conditions, 445 events. 214/445 cut-off events. For 5660/5660 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2076 event pairs, 26 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2763. Up to 106 conditions per place. [2023-09-01 02:57:31,313 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 86 selfloop transitions, 48 changer transitions 19/153 dead transitions. [2023-09-01 02:57:31,313 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 153 transitions, 1762 flow [2023-09-01 02:57:31,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:57:31,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:57:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1176 transitions. [2023-09-01 02:57:31,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4284153005464481 [2023-09-01 02:57:31,316 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1176 transitions. [2023-09-01 02:57:31,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1176 transitions. [2023-09-01 02:57:31,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:31,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1176 transitions. [2023-09-01 02:57:31,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 78.4) internal successors, (1176), 15 states have internal predecessors, (1176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:31,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:31,321 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:31,321 INFO L175 Difference]: Start difference. First operand has 140 places, 104 transitions, 1188 flow. Second operand 15 states and 1176 transitions. [2023-09-01 02:57:31,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 153 transitions, 1762 flow [2023-09-01 02:57:31,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 153 transitions, 1568 flow, removed 55 selfloop flow, removed 9 redundant places. [2023-09-01 02:57:31,339 INFO L231 Difference]: Finished difference. Result has 143 places, 99 transitions, 1065 flow [2023-09-01 02:57:31,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1032, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1065, PETRI_PLACES=143, PETRI_TRANSITIONS=99} [2023-09-01 02:57:31,340 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2023-09-01 02:57:31,340 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 99 transitions, 1065 flow [2023-09-01 02:57:31,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 73.6842105263158) internal successors, (1400), 19 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:31,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:31,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:31,345 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-09-01 02:57:31,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:31,541 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:31,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:31,542 INFO L85 PathProgramCache]: Analyzing trace with hash 646459371, now seen corresponding path program 5 times [2023-09-01 02:57:31,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:31,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769338832] [2023-09-01 02:57:31,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:31,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:31,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:31,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769338832] [2023-09-01 02:57:31,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769338832] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:31,668 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2045328856] [2023-09-01 02:57:31,669 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:57:31,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:31,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:31,673 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:31,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-09-01 02:57:31,740 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:31,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:31,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:31,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:31,840 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:31,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:31,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2045328856] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:31,964 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:31,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 02:57:31,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039375970] [2023-09-01 02:57:31,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:31,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:57:31,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:31,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:57:31,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:57:32,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:32,091 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 99 transitions, 1065 flow. Second operand has 18 states, 18 states have (on average 73.77777777777777) internal successors, (1328), 18 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:32,091 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:32,091 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:32,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:32,558 INFO L130 PetriNetUnfolder]: 248/506 cut-off events. [2023-09-01 02:57:32,559 INFO L131 PetriNetUnfolder]: For 6509/6509 co-relation queries the response was YES. [2023-09-01 02:57:32,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 506 events. 248/506 cut-off events. For 6509/6509 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2365 event pairs, 23 based on Foata normal form. 3/509 useless extension candidates. Maximal degree in co-relation 3099. Up to 293 conditions per place. [2023-09-01 02:57:32,564 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 109 selfloop transitions, 22 changer transitions 27/158 dead transitions. [2023-09-01 02:57:32,564 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 158 transitions, 1811 flow [2023-09-01 02:57:32,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 02:57:32,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 02:57:32,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1313 transitions. [2023-09-01 02:57:32,567 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.422050787528126 [2023-09-01 02:57:32,567 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1313 transitions. [2023-09-01 02:57:32,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1313 transitions. [2023-09-01 02:57:32,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:32,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1313 transitions. [2023-09-01 02:57:32,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 77.23529411764706) internal successors, (1313), 17 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:32,573 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:32,573 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 183.0) internal successors, (3294), 18 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:32,573 INFO L175 Difference]: Start difference. First operand has 143 places, 99 transitions, 1065 flow. Second operand 17 states and 1313 transitions. [2023-09-01 02:57:32,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 158 transitions, 1811 flow [2023-09-01 02:57:32,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 158 transitions, 1663 flow, removed 16 selfloop flow, removed 18 redundant places. [2023-09-01 02:57:32,593 INFO L231 Difference]: Finished difference. Result has 143 places, 98 transitions, 1001 flow [2023-09-01 02:57:32,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=935, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1001, PETRI_PLACES=143, PETRI_TRANSITIONS=98} [2023-09-01 02:57:32,594 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 114 predicate places. [2023-09-01 02:57:32,594 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 98 transitions, 1001 flow [2023-09-01 02:57:32,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.77777777777777) internal successors, (1328), 18 states have internal predecessors, (1328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:32,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:32,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:32,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:32,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-09-01 02:57:32,800 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:32,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:32,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2101797185, now seen corresponding path program 6 times [2023-09-01 02:57:32,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:32,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94944094] [2023-09-01 02:57:32,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:32,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:32,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:32,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94944094] [2023-09-01 02:57:32,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94944094] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:32,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [133070867] [2023-09-01 02:57:32,967 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:57:32,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:32,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:32,969 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:32,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-09-01 02:57:33,038 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:57:33,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:33,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:33,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:33,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:33,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [133070867] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:33,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:33,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 02:57:33,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636828571] [2023-09-01 02:57:33,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:33,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:57:33,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:33,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:57:33,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:57:33,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:33,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 98 transitions, 1001 flow. Second operand has 18 states, 18 states have (on average 73.61111111111111) internal successors, (1325), 18 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:33,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:33,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:33,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:33,757 INFO L130 PetriNetUnfolder]: 216/457 cut-off events. [2023-09-01 02:57:33,757 INFO L131 PetriNetUnfolder]: For 7123/7123 co-relation queries the response was YES. [2023-09-01 02:57:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2784 conditions, 457 events. 216/457 cut-off events. For 7123/7123 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2124 event pairs, 19 based on Foata normal form. 2/459 useless extension candidates. Maximal degree in co-relation 2735. Up to 293 conditions per place. [2023-09-01 02:57:33,762 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 112 selfloop transitions, 23 changer transitions 10/145 dead transitions. [2023-09-01 02:57:33,763 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 145 transitions, 1561 flow [2023-09-01 02:57:33,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:57:33,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:57:33,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1015 transitions. [2023-09-01 02:57:33,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4266498528793611 [2023-09-01 02:57:33,765 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1015 transitions. [2023-09-01 02:57:33,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1015 transitions. [2023-09-01 02:57:33,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:33,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1015 transitions. [2023-09-01 02:57:33,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.07692307692308) internal successors, (1015), 13 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:33,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:33,769 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:33,769 INFO L175 Difference]: Start difference. First operand has 143 places, 98 transitions, 1001 flow. Second operand 13 states and 1015 transitions. [2023-09-01 02:57:33,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 145 transitions, 1561 flow [2023-09-01 02:57:33,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 145 transitions, 1401 flow, removed 25 selfloop flow, removed 15 redundant places. [2023-09-01 02:57:33,786 INFO L231 Difference]: Finished difference. Result has 139 places, 102 transitions, 1018 flow [2023-09-01 02:57:33,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=886, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1018, PETRI_PLACES=139, PETRI_TRANSITIONS=102} [2023-09-01 02:57:33,787 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 110 predicate places. [2023-09-01 02:57:33,787 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 102 transitions, 1018 flow [2023-09-01 02:57:33,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.61111111111111) internal successors, (1325), 18 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:33,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:33,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:33,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-09-01 02:57:33,993 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:33,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2110255031, now seen corresponding path program 7 times [2023-09-01 02:57:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803318351] [2023-09-01 02:57:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:34,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:34,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803318351] [2023-09-01 02:57:34,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803318351] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:34,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [362667938] [2023-09-01 02:57:34,141 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:57:34,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:34,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:34,143 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:34,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-09-01 02:57:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:34,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 21 conjunts are in the unsatisfiable core [2023-09-01 02:57:34,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:34,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:34,326 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:34,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:34,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [362667938] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:34,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:34,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2023-09-01 02:57:34,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473284776] [2023-09-01 02:57:34,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:34,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-09-01 02:57:34,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:34,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-09-01 02:57:34,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-09-01 02:57:34,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:34,625 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 102 transitions, 1018 flow. Second operand has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:34,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:34,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:34,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:35,014 INFO L130 PetriNetUnfolder]: 214/443 cut-off events. [2023-09-01 02:57:35,014 INFO L131 PetriNetUnfolder]: For 5781/5781 co-relation queries the response was YES. [2023-09-01 02:57:35,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2632 conditions, 443 events. 214/443 cut-off events. For 5781/5781 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2011 event pairs, 23 based on Foata normal form. 2/445 useless extension candidates. Maximal degree in co-relation 2584. Up to 293 conditions per place. [2023-09-01 02:57:35,018 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 102 selfloop transitions, 21 changer transitions 14/137 dead transitions. [2023-09-01 02:57:35,018 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 137 transitions, 1478 flow [2023-09-01 02:57:35,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-09-01 02:57:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-09-01 02:57:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1005 transitions. [2023-09-01 02:57:35,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224464060529634 [2023-09-01 02:57:35,020 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1005 transitions. [2023-09-01 02:57:35,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1005 transitions. [2023-09-01 02:57:35,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:35,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1005 transitions. [2023-09-01 02:57:35,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.3076923076923) internal successors, (1005), 13 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:35,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:35,024 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 183.0) internal successors, (2562), 14 states have internal predecessors, (2562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:35,024 INFO L175 Difference]: Start difference. First operand has 139 places, 102 transitions, 1018 flow. Second operand 13 states and 1005 transitions. [2023-09-01 02:57:35,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 137 transitions, 1478 flow [2023-09-01 02:57:35,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 137 transitions, 1347 flow, removed 49 selfloop flow, removed 8 redundant places. [2023-09-01 02:57:35,040 INFO L231 Difference]: Finished difference. Result has 145 places, 101 transitions, 973 flow [2023-09-01 02:57:35,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=937, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=973, PETRI_PLACES=145, PETRI_TRANSITIONS=101} [2023-09-01 02:57:35,041 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 116 predicate places. [2023-09-01 02:57:35,041 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 101 transitions, 973 flow [2023-09-01 02:57:35,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 73.72222222222223) internal successors, (1327), 18 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:35,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:35,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:35,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:35,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-09-01 02:57:35,248 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:35,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:35,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1126914273, now seen corresponding path program 11 times [2023-09-01 02:57:35,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:35,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297506511] [2023-09-01 02:57:35,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:35,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:35,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297506511] [2023-09-01 02:57:35,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297506511] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:35,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770891282] [2023-09-01 02:57:35,471 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:57:35,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:35,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:35,473 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:35,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-09-01 02:57:35,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 02:57:35,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:35,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:35,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:35,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770891282] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:35,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:35,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 21 [2023-09-01 02:57:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11248352] [2023-09-01 02:57:35,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:35,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-09-01 02:57:35,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:35,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-09-01 02:57:35,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2023-09-01 02:57:36,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:36,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 101 transitions, 973 flow. Second operand has 23 states, 23 states have (on average 73.82608695652173) internal successors, (1698), 23 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:36,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:36,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:36,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:36,864 INFO L130 PetriNetUnfolder]: 365/752 cut-off events. [2023-09-01 02:57:36,864 INFO L131 PetriNetUnfolder]: For 11720/11720 co-relation queries the response was YES. [2023-09-01 02:57:36,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4572 conditions, 752 events. 365/752 cut-off events. For 11720/11720 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3997 event pairs, 10 based on Foata normal form. 3/755 useless extension candidates. Maximal degree in co-relation 4522. Up to 183 conditions per place. [2023-09-01 02:57:36,871 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 98 selfloop transitions, 88 changer transitions 37/223 dead transitions. [2023-09-01 02:57:36,871 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 223 transitions, 2403 flow [2023-09-01 02:57:36,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 02:57:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 02:57:36,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1799 transitions. [2023-09-01 02:57:36,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4274174388215728 [2023-09-01 02:57:36,874 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1799 transitions. [2023-09-01 02:57:36,874 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1799 transitions. [2023-09-01 02:57:36,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:36,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1799 transitions. [2023-09-01 02:57:36,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 78.21739130434783) internal successors, (1799), 23 states have internal predecessors, (1799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:36,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 183.0) internal successors, (4392), 24 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:36,881 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 183.0) internal successors, (4392), 24 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:36,881 INFO L175 Difference]: Start difference. First operand has 145 places, 101 transitions, 973 flow. Second operand 23 states and 1799 transitions. [2023-09-01 02:57:36,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 223 transitions, 2403 flow [2023-09-01 02:57:36,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 223 transitions, 2318 flow, removed 17 selfloop flow, removed 13 redundant places. [2023-09-01 02:57:36,929 INFO L231 Difference]: Finished difference. Result has 154 places, 127 transitions, 1425 flow [2023-09-01 02:57:36,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1425, PETRI_PLACES=154, PETRI_TRANSITIONS=127} [2023-09-01 02:57:36,931 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 125 predicate places. [2023-09-01 02:57:36,931 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 127 transitions, 1425 flow [2023-09-01 02:57:36,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 73.82608695652173) internal successors, (1698), 23 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:36,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:36,932 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:36,943 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-09-01 02:57:37,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-09-01 02:57:37,137 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:37,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:37,137 INFO L85 PathProgramCache]: Analyzing trace with hash -190901963, now seen corresponding path program 12 times [2023-09-01 02:57:37,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:37,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978564155] [2023-09-01 02:57:37,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:37,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:37,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978564155] [2023-09-01 02:57:37,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978564155] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:37,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980842223] [2023-09-01 02:57:37,309 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:57:37,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:37,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:37,313 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:37,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-09-01 02:57:37,387 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:57:37,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:37,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:37,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:37,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:37,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:37,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:37,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980842223] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:37,843 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:37,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:37,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386231758] [2023-09-01 02:57:37,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:37,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:37,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:37,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:37,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:38,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:38,065 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 127 transitions, 1425 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:38,065 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:38,065 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:38,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:39,595 INFO L130 PetriNetUnfolder]: 460/996 cut-off events. [2023-09-01 02:57:39,595 INFO L131 PetriNetUnfolder]: For 22455/22455 co-relation queries the response was YES. [2023-09-01 02:57:39,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6787 conditions, 996 events. 460/996 cut-off events. For 22455/22455 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5933 event pairs, 16 based on Foata normal form. 7/1003 useless extension candidates. Maximal degree in co-relation 6732. Up to 265 conditions per place. [2023-09-01 02:57:39,605 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 158 selfloop transitions, 137 changer transitions 26/321 dead transitions. [2023-09-01 02:57:39,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 321 transitions, 3728 flow [2023-09-01 02:57:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-09-01 02:57:39,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-09-01 02:57:39,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3189 transitions. [2023-09-01 02:57:39,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4250299880047981 [2023-09-01 02:57:39,609 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3189 transitions. [2023-09-01 02:57:39,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3189 transitions. [2023-09-01 02:57:39,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:39,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3189 transitions. [2023-09-01 02:57:39,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 77.78048780487805) internal successors, (3189), 41 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:39,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 183.0) internal successors, (7686), 42 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:39,619 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 183.0) internal successors, (7686), 42 states have internal predecessors, (7686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:39,619 INFO L175 Difference]: Start difference. First operand has 154 places, 127 transitions, 1425 flow. Second operand 41 states and 3189 transitions. [2023-09-01 02:57:39,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 321 transitions, 3728 flow [2023-09-01 02:57:39,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 321 transitions, 3086 flow, removed 167 selfloop flow, removed 19 redundant places. [2023-09-01 02:57:39,658 INFO L231 Difference]: Finished difference. Result has 179 places, 176 transitions, 2009 flow [2023-09-01 02:57:39,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1115, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2009, PETRI_PLACES=179, PETRI_TRANSITIONS=176} [2023-09-01 02:57:39,659 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 150 predicate places. [2023-09-01 02:57:39,659 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 176 transitions, 2009 flow [2023-09-01 02:57:39,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:39,659 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:39,660 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:39,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:39,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:39,865 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:39,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash -273817043, now seen corresponding path program 13 times [2023-09-01 02:57:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400693350] [2023-09-01 02:57:39,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:39,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:40,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:40,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400693350] [2023-09-01 02:57:40,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400693350] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:40,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535847861] [2023-09-01 02:57:40,069 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:57:40,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:40,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:40,070 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:40,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-09-01 02:57:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:40,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:40,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:40,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:40,356 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:40,542 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:40,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535847861] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:40,543 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:40,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:40,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526065197] [2023-09-01 02:57:40,543 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:40,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:40,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:40,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=444, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:40,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:40,736 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 176 transitions, 2009 flow. Second operand has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:40,736 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:40,736 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:40,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:41,734 INFO L130 PetriNetUnfolder]: 494/1042 cut-off events. [2023-09-01 02:57:41,734 INFO L131 PetriNetUnfolder]: For 22996/22996 co-relation queries the response was YES. [2023-09-01 02:57:41,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6995 conditions, 1042 events. 494/1042 cut-off events. For 22996/22996 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 6093 event pairs, 26 based on Foata normal form. 3/1045 useless extension candidates. Maximal degree in co-relation 6937. Up to 296 conditions per place. [2023-09-01 02:57:41,741 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 146 selfloop transitions, 115 changer transitions 32/293 dead transitions. [2023-09-01 02:57:41,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 293 transitions, 3558 flow [2023-09-01 02:57:41,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-09-01 02:57:41,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-09-01 02:57:41,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2259 transitions. [2023-09-01 02:57:41,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425664217071792 [2023-09-01 02:57:41,753 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2259 transitions. [2023-09-01 02:57:41,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2259 transitions. [2023-09-01 02:57:41,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:41,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2259 transitions. [2023-09-01 02:57:41,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 77.89655172413794) internal successors, (2259), 29 states have internal predecessors, (2259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:41,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:41,764 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 183.0) internal successors, (5490), 30 states have internal predecessors, (5490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:41,764 INFO L175 Difference]: Start difference. First operand has 179 places, 176 transitions, 2009 flow. Second operand 29 states and 2259 transitions. [2023-09-01 02:57:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 293 transitions, 3558 flow [2023-09-01 02:57:41,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 293 transitions, 2950 flow, removed 254 selfloop flow, removed 16 redundant places. [2023-09-01 02:57:41,840 INFO L231 Difference]: Finished difference. Result has 197 places, 188 transitions, 2045 flow [2023-09-01 02:57:41,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1677, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2045, PETRI_PLACES=197, PETRI_TRANSITIONS=188} [2023-09-01 02:57:41,841 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 168 predicate places. [2023-09-01 02:57:41,842 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 188 transitions, 2045 flow [2023-09-01 02:57:41,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:41,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:41,843 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:41,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:42,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-09-01 02:57:42,049 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:42,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:42,049 INFO L85 PathProgramCache]: Analyzing trace with hash 131396169, now seen corresponding path program 14 times [2023-09-01 02:57:42,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:42,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838336421] [2023-09-01 02:57:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:42,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:42,199 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:42,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838336421] [2023-09-01 02:57:42,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838336421] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:42,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360047956] [2023-09-01 02:57:42,200 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:42,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:42,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:42,205 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:42,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-09-01 02:57:42,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:42,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:42,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:42,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:42,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:42,522 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:42,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:42,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360047956] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:42,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:42,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:42,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978969553] [2023-09-01 02:57:42,723 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:42,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:42,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:42,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:42,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:42,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:42,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 188 transitions, 2045 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:42,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:42,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:42,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:44,012 INFO L130 PetriNetUnfolder]: 566/1158 cut-off events. [2023-09-01 02:57:44,012 INFO L131 PetriNetUnfolder]: For 19210/19210 co-relation queries the response was YES. [2023-09-01 02:57:44,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7065 conditions, 1158 events. 566/1158 cut-off events. For 19210/19210 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6808 event pairs, 12 based on Foata normal form. 7/1165 useless extension candidates. Maximal degree in co-relation 7001. Up to 222 conditions per place. [2023-09-01 02:57:44,020 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 126 selfloop transitions, 142 changer transitions 66/334 dead transitions. [2023-09-01 02:57:44,020 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 334 transitions, 3807 flow [2023-09-01 02:57:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-09-01 02:57:44,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-09-01 02:57:44,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2924 transitions. [2023-09-01 02:57:44,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4204774230658614 [2023-09-01 02:57:44,024 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2924 transitions. [2023-09-01 02:57:44,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2924 transitions. [2023-09-01 02:57:44,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:44,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2924 transitions. [2023-09-01 02:57:44,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 76.94736842105263) internal successors, (2924), 38 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:44,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 183.0) internal successors, (7137), 39 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:44,034 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 183.0) internal successors, (7137), 39 states have internal predecessors, (7137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:44,034 INFO L175 Difference]: Start difference. First operand has 197 places, 188 transitions, 2045 flow. Second operand 38 states and 2924 transitions. [2023-09-01 02:57:44,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 334 transitions, 3807 flow [2023-09-01 02:57:44,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 334 transitions, 3565 flow, removed 24 selfloop flow, removed 17 redundant places. [2023-09-01 02:57:44,114 INFO L231 Difference]: Finished difference. Result has 216 places, 191 transitions, 2250 flow [2023-09-01 02:57:44,114 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1844, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=2250, PETRI_PLACES=216, PETRI_TRANSITIONS=191} [2023-09-01 02:57:44,115 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 187 predicate places. [2023-09-01 02:57:44,115 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 191 transitions, 2250 flow [2023-09-01 02:57:44,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:44,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:44,116 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:44,120 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-09-01 02:57:44,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:44,316 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:44,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:44,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1671051909, now seen corresponding path program 15 times [2023-09-01 02:57:44,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:44,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255325159] [2023-09-01 02:57:44,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:44,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:44,489 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:44,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255325159] [2023-09-01 02:57:44,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255325159] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:44,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283357511] [2023-09-01 02:57:44,490 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:57:44,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:44,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:44,492 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:44,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-09-01 02:57:44,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-09-01 02:57:44,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:44,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:44,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:44,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:44,779 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:45,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283357511] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:45,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:45,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196362127] [2023-09-01 02:57:45,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:45,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:45,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:45,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:45,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 191 transitions, 2250 flow. Second operand has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:45,295 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:45,295 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:45,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:46,657 INFO L130 PetriNetUnfolder]: 566/1106 cut-off events. [2023-09-01 02:57:46,657 INFO L131 PetriNetUnfolder]: For 21642/21642 co-relation queries the response was YES. [2023-09-01 02:57:46,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7390 conditions, 1106 events. 566/1106 cut-off events. For 21642/21642 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 6144 event pairs, 6 based on Foata normal form. 11/1117 useless extension candidates. Maximal degree in co-relation 7326. Up to 247 conditions per place. [2023-09-01 02:57:46,665 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 135 selfloop transitions, 160 changer transitions 28/323 dead transitions. [2023-09-01 02:57:46,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 323 transitions, 3832 flow [2023-09-01 02:57:46,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-09-01 02:57:46,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-09-01 02:57:46,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3009 transitions. [2023-09-01 02:57:46,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4216057166876839 [2023-09-01 02:57:46,667 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3009 transitions. [2023-09-01 02:57:46,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3009 transitions. [2023-09-01 02:57:46,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:46,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3009 transitions. [2023-09-01 02:57:46,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 77.15384615384616) internal successors, (3009), 39 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:46,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 183.0) internal successors, (7320), 40 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:46,697 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 183.0) internal successors, (7320), 40 states have internal predecessors, (7320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:46,697 INFO L175 Difference]: Start difference. First operand has 216 places, 191 transitions, 2250 flow. Second operand 39 states and 3009 transitions. [2023-09-01 02:57:46,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 323 transitions, 3832 flow [2023-09-01 02:57:46,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 323 transitions, 3395 flow, removed 100 selfloop flow, removed 23 redundant places. [2023-09-01 02:57:46,754 INFO L231 Difference]: Finished difference. Result has 220 places, 207 transitions, 2450 flow [2023-09-01 02:57:46,754 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1882, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2450, PETRI_PLACES=220, PETRI_TRANSITIONS=207} [2023-09-01 02:57:46,754 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 191 predicate places. [2023-09-01 02:57:46,755 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 207 transitions, 2450 flow [2023-09-01 02:57:46,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:46,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:46,755 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:46,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:46,963 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:46,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash -458168546, now seen corresponding path program 8 times [2023-09-01 02:57:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:46,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096018593] [2023-09-01 02:57:46,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:47,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:47,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096018593] [2023-09-01 02:57:47,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096018593] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:47,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132446088] [2023-09-01 02:57:47,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:47,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:47,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:47,107 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:47,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-09-01 02:57:47,187 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:47,187 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:47,188 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 02:57:47,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:47,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:47,317 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:47,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1132446088] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:47,438 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:47,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-09-01 02:57:47,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609932981] [2023-09-01 02:57:47,438 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:47,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:57:47,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:57:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:57:47,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:47,623 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 207 transitions, 2450 flow. Second operand has 20 states, 20 states have (on average 73.65) internal successors, (1473), 20 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:47,623 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:47,623 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:47,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:48,184 INFO L130 PetriNetUnfolder]: 598/1220 cut-off events. [2023-09-01 02:57:48,184 INFO L131 PetriNetUnfolder]: For 25481/25481 co-relation queries the response was YES. [2023-09-01 02:57:48,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8375 conditions, 1220 events. 598/1220 cut-off events. For 25481/25481 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 7239 event pairs, 30 based on Foata normal form. 19/1239 useless extension candidates. Maximal degree in co-relation 8312. Up to 365 conditions per place. [2023-09-01 02:57:48,193 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 183 selfloop transitions, 102 changer transitions 26/311 dead transitions. [2023-09-01 02:57:48,194 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 311 transitions, 3895 flow [2023-09-01 02:57:48,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-09-01 02:57:48,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-09-01 02:57:48,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1561 transitions. [2023-09-01 02:57:48,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42650273224043717 [2023-09-01 02:57:48,205 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1561 transitions. [2023-09-01 02:57:48,205 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1561 transitions. [2023-09-01 02:57:48,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:48,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1561 transitions. [2023-09-01 02:57:48,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 78.05) internal successors, (1561), 20 states have internal predecessors, (1561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:48,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:48,229 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 183.0) internal successors, (3843), 21 states have internal predecessors, (3843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:48,229 INFO L175 Difference]: Start difference. First operand has 220 places, 207 transitions, 2450 flow. Second operand 20 states and 1561 transitions. [2023-09-01 02:57:48,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 311 transitions, 3895 flow [2023-09-01 02:57:48,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 311 transitions, 3640 flow, removed 49 selfloop flow, removed 28 redundant places. [2023-09-01 02:57:48,288 INFO L231 Difference]: Finished difference. Result has 209 places, 231 transitions, 2868 flow [2023-09-01 02:57:48,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2251, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2868, PETRI_PLACES=209, PETRI_TRANSITIONS=231} [2023-09-01 02:57:48,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 180 predicate places. [2023-09-01 02:57:48,288 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 231 transitions, 2868 flow [2023-09-01 02:57:48,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.65) internal successors, (1473), 20 states have internal predecessors, (1473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:48,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:48,290 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:48,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:48,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:48,496 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:48,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1676496654, now seen corresponding path program 9 times [2023-09-01 02:57:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012628248] [2023-09-01 02:57:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:48,629 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:48,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012628248] [2023-09-01 02:57:48,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012628248] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:48,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318281703] [2023-09-01 02:57:48,630 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-09-01 02:57:48,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:48,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:48,632 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:48,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-09-01 02:57:48,717 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-09-01 02:57:48,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:48,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 25 conjunts are in the unsatisfiable core [2023-09-01 02:57:48,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:48,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:48,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318281703] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:48,971 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:48,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-09-01 02:57:48,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248952441] [2023-09-01 02:57:48,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:48,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:57:48,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:48,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:57:48,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:57:49,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:49,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 231 transitions, 2868 flow. Second operand has 20 states, 20 states have (on average 73.7) internal successors, (1474), 20 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:49,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:49,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:49,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:49,735 INFO L130 PetriNetUnfolder]: 605/1199 cut-off events. [2023-09-01 02:57:49,736 INFO L131 PetriNetUnfolder]: For 28052/28052 co-relation queries the response was YES. [2023-09-01 02:57:49,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8692 conditions, 1199 events. 605/1199 cut-off events. For 28052/28052 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 6878 event pairs, 14 based on Foata normal form. 13/1212 useless extension candidates. Maximal degree in co-relation 8628. Up to 371 conditions per place. [2023-09-01 02:57:49,745 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 172 selfloop transitions, 75 changer transitions 64/311 dead transitions. [2023-09-01 02:57:49,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 311 transitions, 4153 flow [2023-09-01 02:57:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-09-01 02:57:49,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-09-01 02:57:49,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1692 transitions. [2023-09-01 02:57:49,755 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4202682563338301 [2023-09-01 02:57:49,755 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1692 transitions. [2023-09-01 02:57:49,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1692 transitions. [2023-09-01 02:57:49,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:49,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1692 transitions. [2023-09-01 02:57:49,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 76.9090909090909) internal successors, (1692), 22 states have internal predecessors, (1692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:49,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:49,761 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 183.0) internal successors, (4209), 23 states have internal predecessors, (4209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:49,761 INFO L175 Difference]: Start difference. First operand has 209 places, 231 transitions, 2868 flow. Second operand 22 states and 1692 transitions. [2023-09-01 02:57:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 311 transitions, 4153 flow [2023-09-01 02:57:49,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 311 transitions, 3580 flow, removed 214 selfloop flow, removed 23 redundant places. [2023-09-01 02:57:49,850 INFO L231 Difference]: Finished difference. Result has 211 places, 210 transitions, 2427 flow [2023-09-01 02:57:49,850 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2427, PETRI_PLACES=211, PETRI_TRANSITIONS=210} [2023-09-01 02:57:49,851 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2023-09-01 02:57:49,851 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 210 transitions, 2427 flow [2023-09-01 02:57:49,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.7) internal successors, (1474), 20 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:49,851 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:49,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:50,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:50,057 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:50,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:50,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1079140853, now seen corresponding path program 16 times [2023-09-01 02:57:50,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:50,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260677927] [2023-09-01 02:57:50,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:50,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:50,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260677927] [2023-09-01 02:57:50,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260677927] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:50,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294383538] [2023-09-01 02:57:50,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:57:50,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:50,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:50,225 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:50,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-09-01 02:57:50,292 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:57:50,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:50,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:50,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:50,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:50,464 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:50,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294383538] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:50,677 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:50,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:50,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164277556] [2023-09-01 02:57:50,677 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:50,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:50,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:50,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:50,830 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 210 transitions, 2427 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:50,830 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:50,830 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:50,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:51,254 INFO L130 PetriNetUnfolder]: 478/976 cut-off events. [2023-09-01 02:57:51,255 INFO L131 PetriNetUnfolder]: For 4852/4852 co-relation queries the response was YES. [2023-09-01 02:57:51,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 976 events. 478/976 cut-off events. For 4852/4852 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 5386 event pairs, 15 based on Foata normal form. 3/977 useless extension candidates. Maximal degree in co-relation 5338. Up to 621 conditions per place. [2023-09-01 02:57:51,260 INFO L137 encePairwiseOnDemand]: 176/183 looper letters, 188 selfloop transitions, 27 changer transitions 29/244 dead transitions. [2023-09-01 02:57:51,260 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 244 transitions, 3065 flow [2023-09-01 02:57:51,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-09-01 02:57:51,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-09-01 02:57:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1139 transitions. [2023-09-01 02:57:51,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.414936247723133 [2023-09-01 02:57:51,262 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1139 transitions. [2023-09-01 02:57:51,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1139 transitions. [2023-09-01 02:57:51,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:51,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1139 transitions. [2023-09-01 02:57:51,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 75.93333333333334) internal successors, (1139), 15 states have internal predecessors, (1139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:51,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:51,265 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 183.0) internal successors, (2928), 16 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:51,265 INFO L175 Difference]: Start difference. First operand has 211 places, 210 transitions, 2427 flow. Second operand 15 states and 1139 transitions. [2023-09-01 02:57:51,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 244 transitions, 3065 flow [2023-09-01 02:57:51,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 244 transitions, 2903 flow, removed 26 selfloop flow, removed 21 redundant places. [2023-09-01 02:57:51,287 INFO L231 Difference]: Finished difference. Result has 195 places, 205 transitions, 2283 flow [2023-09-01 02:57:51,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2273, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=2283, PETRI_PLACES=195, PETRI_TRANSITIONS=205} [2023-09-01 02:57:51,288 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2023-09-01 02:57:51,288 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 205 transitions, 2283 flow [2023-09-01 02:57:51,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:51,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:51,288 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:51,293 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-09-01 02:57:51,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-09-01 02:57:51,489 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:51,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1095913443, now seen corresponding path program 17 times [2023-09-01 02:57:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265818245] [2023-09-01 02:57:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:51,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:51,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:51,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:51,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265818245] [2023-09-01 02:57:51,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265818245] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:51,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181452853] [2023-09-01 02:57:51,659 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:57:51,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:51,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:51,661 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:51,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-09-01 02:57:51,737 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 02:57:51,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:51,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:51,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:51,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:51,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:52,142 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:52,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181452853] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:52,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:52,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:52,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672298326] [2023-09-01 02:57:52,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:52,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:52,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:52,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:52,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:52,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:52,308 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 205 transitions, 2283 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:52,308 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:52,308 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:52,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:52,833 INFO L130 PetriNetUnfolder]: 478/979 cut-off events. [2023-09-01 02:57:52,833 INFO L131 PetriNetUnfolder]: For 4467/4467 co-relation queries the response was YES. [2023-09-01 02:57:52,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5230 conditions, 979 events. 478/979 cut-off events. For 4467/4467 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 5459 event pairs, 15 based on Foata normal form. 4/981 useless extension candidates. Maximal degree in co-relation 5180. Up to 607 conditions per place. [2023-09-01 02:57:52,837 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 186 selfloop transitions, 34 changer transitions 33/253 dead transitions. [2023-09-01 02:57:52,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 253 transitions, 3019 flow [2023-09-01 02:57:52,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-09-01 02:57:52,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-09-01 02:57:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1589 transitions. [2023-09-01 02:57:52,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134790528233151 [2023-09-01 02:57:52,841 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1589 transitions. [2023-09-01 02:57:52,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1589 transitions. [2023-09-01 02:57:52,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:52,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1589 transitions. [2023-09-01 02:57:52,843 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 75.66666666666667) internal successors, (1589), 21 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:52,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 183.0) internal successors, (4026), 22 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:52,846 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 183.0) internal successors, (4026), 22 states have internal predecessors, (4026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:52,846 INFO L175 Difference]: Start difference. First operand has 195 places, 205 transitions, 2283 flow. Second operand 21 states and 1589 transitions. [2023-09-01 02:57:52,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 253 transitions, 3019 flow [2023-09-01 02:57:52,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 253 transitions, 2937 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-09-01 02:57:52,873 INFO L231 Difference]: Finished difference. Result has 195 places, 205 transitions, 2309 flow [2023-09-01 02:57:52,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2214, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2309, PETRI_PLACES=195, PETRI_TRANSITIONS=205} [2023-09-01 02:57:52,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 166 predicate places. [2023-09-01 02:57:52,874 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 205 transitions, 2309 flow [2023-09-01 02:57:52,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:52,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:52,875 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:52,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:53,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-09-01 02:57:53,081 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:53,081 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:53,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1770630947, now seen corresponding path program 18 times [2023-09-01 02:57:53,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:53,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839241629] [2023-09-01 02:57:53,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:53,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:53,227 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:53,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839241629] [2023-09-01 02:57:53,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839241629] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:53,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343522103] [2023-09-01 02:57:53,228 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:57:53,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:53,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:53,233 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:53,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-09-01 02:57:53,319 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:57:53,319 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:53,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:53,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:53,511 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:53,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:53,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:53,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343522103] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:53,736 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:53,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:53,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675224024] [2023-09-01 02:57:53,737 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:53,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:53,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:53,941 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:53,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 205 transitions, 2309 flow. Second operand has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:53,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:53,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:53,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:54,894 INFO L130 PetriNetUnfolder]: 516/1046 cut-off events. [2023-09-01 02:57:54,895 INFO L131 PetriNetUnfolder]: For 5494/5494 co-relation queries the response was YES. [2023-09-01 02:57:54,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 1046 events. 516/1046 cut-off events. For 5494/5494 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5901 event pairs, 15 based on Foata normal form. 5/1049 useless extension candidates. Maximal degree in co-relation 5737. Up to 569 conditions per place. [2023-09-01 02:57:54,902 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 196 selfloop transitions, 60 changer transitions 49/305 dead transitions. [2023-09-01 02:57:54,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 305 transitions, 3624 flow [2023-09-01 02:57:54,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-09-01 02:57:54,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-09-01 02:57:54,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2504 transitions. [2023-09-01 02:57:54,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146381851299884 [2023-09-01 02:57:54,906 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2504 transitions. [2023-09-01 02:57:54,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2504 transitions. [2023-09-01 02:57:54,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:54,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2504 transitions. [2023-09-01 02:57:54,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 75.87878787878788) internal successors, (2504), 33 states have internal predecessors, (2504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:54,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 183.0) internal successors, (6222), 34 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:54,913 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 183.0) internal successors, (6222), 34 states have internal predecessors, (6222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:54,914 INFO L175 Difference]: Start difference. First operand has 195 places, 205 transitions, 2309 flow. Second operand 33 states and 2504 transitions. [2023-09-01 02:57:54,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 305 transitions, 3624 flow [2023-09-01 02:57:54,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 305 transitions, 3576 flow, removed 15 selfloop flow, removed 12 redundant places. [2023-09-01 02:57:54,943 INFO L231 Difference]: Finished difference. Result has 212 places, 221 transitions, 2638 flow [2023-09-01 02:57:54,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2279, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2638, PETRI_PLACES=212, PETRI_TRANSITIONS=221} [2023-09-01 02:57:54,944 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 183 predicate places. [2023-09-01 02:57:54,944 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 221 transitions, 2638 flow [2023-09-01 02:57:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.83333333333333) internal successors, (1772), 24 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:54,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:54,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:54,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:55,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-09-01 02:57:55,149 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:55,149 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:55,149 INFO L85 PathProgramCache]: Analyzing trace with hash 804803351, now seen corresponding path program 19 times [2023-09-01 02:57:55,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:55,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255535622] [2023-09-01 02:57:55,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:55,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:55,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:55,341 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:55,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:55,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255535622] [2023-09-01 02:57:55,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255535622] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:55,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886532520] [2023-09-01 02:57:55,342 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:57:55,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:55,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:55,343 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:55,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-09-01 02:57:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:55,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:55,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:55,611 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:55,835 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:55,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886532520] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:55,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:55,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:55,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536834068] [2023-09-01 02:57:55,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:55,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:55,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:55,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:55,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=447, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:56,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:56,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 221 transitions, 2638 flow. Second operand has 24 states, 24 states have (on average 73.79166666666667) internal successors, (1771), 24 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:56,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:56,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:56,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:57,052 INFO L130 PetriNetUnfolder]: 515/1045 cut-off events. [2023-09-01 02:57:57,053 INFO L131 PetriNetUnfolder]: For 6315/6315 co-relation queries the response was YES. [2023-09-01 02:57:57,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6077 conditions, 1045 events. 515/1045 cut-off events. For 6315/6315 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5923 event pairs, 15 based on Foata normal form. 3/1046 useless extension candidates. Maximal degree in co-relation 6025. Up to 577 conditions per place. [2023-09-01 02:57:57,058 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 210 selfloop transitions, 80 changer transitions 18/308 dead transitions. [2023-09-01 02:57:57,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 308 transitions, 3755 flow [2023-09-01 02:57:57,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-09-01 02:57:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-09-01 02:57:57,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 2288 transitions. [2023-09-01 02:57:57,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4167577413479053 [2023-09-01 02:57:57,061 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 2288 transitions. [2023-09-01 02:57:57,061 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 2288 transitions. [2023-09-01 02:57:57,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:57,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 2288 transitions. [2023-09-01 02:57:57,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 76.26666666666667) internal successors, (2288), 30 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:57,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:57,068 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 183.0) internal successors, (5673), 31 states have internal predecessors, (5673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:57,068 INFO L175 Difference]: Start difference. First operand has 212 places, 221 transitions, 2638 flow. Second operand 30 states and 2288 transitions. [2023-09-01 02:57:57,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 308 transitions, 3755 flow [2023-09-01 02:57:57,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 206 places, 308 transitions, 3445 flow, removed 125 selfloop flow, removed 20 redundant places. [2023-09-01 02:57:57,103 INFO L231 Difference]: Finished difference. Result has 211 places, 240 transitions, 2777 flow [2023-09-01 02:57:57,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2394, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2777, PETRI_PLACES=211, PETRI_TRANSITIONS=240} [2023-09-01 02:57:57,104 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 182 predicate places. [2023-09-01 02:57:57,104 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 240 transitions, 2777 flow [2023-09-01 02:57:57,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.79166666666667) internal successors, (1771), 24 states have internal predecessors, (1771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:57,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:57,105 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:57,110 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-09-01 02:57:57,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-09-01 02:57:57,310 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:57,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:57,311 INFO L85 PathProgramCache]: Analyzing trace with hash 721888271, now seen corresponding path program 20 times [2023-09-01 02:57:57,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:57,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155999912] [2023-09-01 02:57:57,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:57,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:57,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:57,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155999912] [2023-09-01 02:57:57,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155999912] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:57,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887151995] [2023-09-01 02:57:57,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:57:57,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:57,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:57,487 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:57,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-09-01 02:57:57,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:57:57,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:57,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:57,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:57,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:57,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:57,923 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:57,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887151995] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:57,923 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:57,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 22 [2023-09-01 02:57:57,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583138219] [2023-09-01 02:57:57,924 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:57,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-09-01 02:57:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:57,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-09-01 02:57:57,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-09-01 02:57:58,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:58,150 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 240 transitions, 2777 flow. Second operand has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:58,151 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:58,151 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:58,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:57:59,011 INFO L130 PetriNetUnfolder]: 509/1015 cut-off events. [2023-09-01 02:57:59,011 INFO L131 PetriNetUnfolder]: For 5699/5699 co-relation queries the response was YES. [2023-09-01 02:57:59,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5882 conditions, 1015 events. 509/1015 cut-off events. For 5699/5699 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5598 event pairs, 15 based on Foata normal form. 3/1010 useless extension candidates. Maximal degree in co-relation 5837. Up to 577 conditions per place. [2023-09-01 02:57:59,015 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 189 selfloop transitions, 69 changer transitions 27/285 dead transitions. [2023-09-01 02:57:59,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 285 transitions, 3466 flow [2023-09-01 02:57:59,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-09-01 02:57:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-09-01 02:57:59,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1903 transitions. [2023-09-01 02:57:59,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41595628415300545 [2023-09-01 02:57:59,017 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1903 transitions. [2023-09-01 02:57:59,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1903 transitions. [2023-09-01 02:57:59,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:57:59,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1903 transitions. [2023-09-01 02:57:59,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 76.12) internal successors, (1903), 25 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:59,022 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 183.0) internal successors, (4758), 26 states have internal predecessors, (4758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:59,022 INFO L175 Difference]: Start difference. First operand has 211 places, 240 transitions, 2777 flow. Second operand 25 states and 1903 transitions. [2023-09-01 02:57:59,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 285 transitions, 3466 flow [2023-09-01 02:57:59,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 285 transitions, 3307 flow, removed 60 selfloop flow, removed 11 redundant places. [2023-09-01 02:57:59,053 INFO L231 Difference]: Finished difference. Result has 219 places, 233 transitions, 2687 flow [2023-09-01 02:57:59,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=2687, PETRI_PLACES=219, PETRI_TRANSITIONS=233} [2023-09-01 02:57:59,054 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 190 predicate places. [2023-09-01 02:57:59,054 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 233 transitions, 2687 flow [2023-09-01 02:57:59,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 73.91666666666667) internal successors, (1774), 24 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:59,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:57:59,055 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:57:59,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-09-01 02:57:59,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-09-01 02:57:59,260 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:57:59,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:57:59,260 INFO L85 PathProgramCache]: Analyzing trace with hash 502161259, now seen corresponding path program 10 times [2023-09-01 02:57:59,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:57:59,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928686866] [2023-09-01 02:57:59,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:57:59,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:57:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:57:59,398 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:59,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:57:59,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928686866] [2023-09-01 02:57:59,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928686866] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:57:59,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111824114] [2023-09-01 02:57:59,399 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-09-01 02:57:59,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:57:59,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:57:59,401 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:57:59,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-09-01 02:57:59,483 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-09-01 02:57:59,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:57:59,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:57:59,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:57:59,623 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:57:59,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:57:59,714 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:57:59,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111824114] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:57:59,715 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:57:59,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2023-09-01 02:57:59,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551725690] [2023-09-01 02:57:59,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:57:59,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:57:59,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:57:59,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:57:59,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:57:59,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:57:59,922 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 233 transitions, 2687 flow. Second operand has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:57:59,922 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:57:59,922 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:57:59,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:58:00,425 INFO L130 PetriNetUnfolder]: 499/979 cut-off events. [2023-09-01 02:58:00,425 INFO L131 PetriNetUnfolder]: For 6194/6194 co-relation queries the response was YES. [2023-09-01 02:58:00,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5739 conditions, 979 events. 499/979 cut-off events. For 6194/6194 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 5326 event pairs, 3 based on Foata normal form. 7/976 useless extension candidates. Maximal degree in co-relation 5694. Up to 273 conditions per place. [2023-09-01 02:58:00,430 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 176 selfloop transitions, 43 changer transitions 83/302 dead transitions. [2023-09-01 02:58:00,430 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 302 transitions, 4011 flow [2023-09-01 02:58:00,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 02:58:00,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 02:58:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1376 transitions. [2023-09-01 02:58:00,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4177292046144505 [2023-09-01 02:58:00,432 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1376 transitions. [2023-09-01 02:58:00,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1376 transitions. [2023-09-01 02:58:00,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:58:00,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1376 transitions. [2023-09-01 02:58:00,434 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 76.44444444444444) internal successors, (1376), 18 states have internal predecessors, (1376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:00,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:00,436 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:00,436 INFO L175 Difference]: Start difference. First operand has 219 places, 233 transitions, 2687 flow. Second operand 18 states and 1376 transitions. [2023-09-01 02:58:00,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 302 transitions, 4011 flow [2023-09-01 02:58:00,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 302 transitions, 3831 flow, removed 8 selfloop flow, removed 21 redundant places. [2023-09-01 02:58:00,459 INFO L231 Difference]: Finished difference. Result has 206 places, 190 transitions, 2205 flow [2023-09-01 02:58:00,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2530, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2205, PETRI_PLACES=206, PETRI_TRANSITIONS=190} [2023-09-01 02:58:00,460 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 177 predicate places. [2023-09-01 02:58:00,460 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 190 transitions, 2205 flow [2023-09-01 02:58:00,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.85) internal successors, (1477), 20 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:00,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:58:00,461 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:58:00,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2023-09-01 02:58:00,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-09-01 02:58:00,661 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:58:00,662 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:58:00,662 INFO L85 PathProgramCache]: Analyzing trace with hash -2063221136, now seen corresponding path program 11 times [2023-09-01 02:58:00,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:58:00,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730241729] [2023-09-01 02:58:00,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:58:00,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:58:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:58:00,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:00,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:58:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730241729] [2023-09-01 02:58:00,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730241729] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:58:00,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1885057373] [2023-09-01 02:58:00,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-09-01 02:58:00,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:00,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:58:00,823 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:58:00,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-09-01 02:58:00,909 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-09-01 02:58:00,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:58:00,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:58:00,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:58:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:01,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:58:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:01,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1885057373] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:58:01,210 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:58:01,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 19 [2023-09-01 02:58:01,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399168038] [2023-09-01 02:58:01,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:58:01,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 02:58:01,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:58:01,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 02:58:01,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2023-09-01 02:58:01,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:58:01,409 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 190 transitions, 2205 flow. Second operand has 21 states, 21 states have (on average 73.80952380952381) internal successors, (1550), 21 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:01,409 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:58:01,409 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:58:01,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:58:01,876 INFO L130 PetriNetUnfolder]: 412/863 cut-off events. [2023-09-01 02:58:01,876 INFO L131 PetriNetUnfolder]: For 5984/5984 co-relation queries the response was YES. [2023-09-01 02:58:01,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4985 conditions, 863 events. 412/863 cut-off events. For 5984/5984 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4785 event pairs, 11 based on Foata normal form. 10/863 useless extension candidates. Maximal degree in co-relation 4938. Up to 197 conditions per place. [2023-09-01 02:58:01,880 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 131 selfloop transitions, 45 changer transitions 88/264 dead transitions. [2023-09-01 02:58:01,880 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 264 transitions, 3280 flow [2023-09-01 02:58:01,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-09-01 02:58:01,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-09-01 02:58:01,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1756 transitions. [2023-09-01 02:58:01,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41720123544784987 [2023-09-01 02:58:01,882 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1756 transitions. [2023-09-01 02:58:01,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1756 transitions. [2023-09-01 02:58:01,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:58:01,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1756 transitions. [2023-09-01 02:58:01,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 76.34782608695652) internal successors, (1756), 23 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:01,887 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 183.0) internal successors, (4392), 24 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:01,887 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 183.0) internal successors, (4392), 24 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:01,887 INFO L175 Difference]: Start difference. First operand has 206 places, 190 transitions, 2205 flow. Second operand 23 states and 1756 transitions. [2023-09-01 02:58:01,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 264 transitions, 3280 flow [2023-09-01 02:58:01,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 264 transitions, 3140 flow, removed 33 selfloop flow, removed 15 redundant places. [2023-09-01 02:58:01,906 INFO L231 Difference]: Finished difference. Result has 204 places, 143 transitions, 1697 flow [2023-09-01 02:58:01,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1697, PETRI_PLACES=204, PETRI_TRANSITIONS=143} [2023-09-01 02:58:01,907 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 175 predicate places. [2023-09-01 02:58:01,907 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 143 transitions, 1697 flow [2023-09-01 02:58:01,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 73.80952380952381) internal successors, (1550), 21 states have internal predecessors, (1550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:01,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:58:01,907 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:58:01,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2023-09-01 02:58:02,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:02,108 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:58:02,108 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:58:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1684554147, now seen corresponding path program 12 times [2023-09-01 02:58:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:58:02,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770351201] [2023-09-01 02:58:02,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:58:02,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:58:02,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:58:02,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:58:02,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:58:02,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770351201] [2023-09-01 02:58:02,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770351201] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:58:02,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023457747] [2023-09-01 02:58:02,274 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-09-01 02:58:02,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:02,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:58:02,275 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:58:02,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-09-01 02:58:02,362 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-09-01 02:58:02,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:58:02,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:58:02,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:58:02,527 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:02,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:58:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:58:02,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023457747] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:58:02,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:58:02,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 19 [2023-09-01 02:58:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608200411] [2023-09-01 02:58:02,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:58:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-09-01 02:58:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:58:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-09-01 02:58:02,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=346, Unknown=0, NotChecked=0, Total=420 [2023-09-01 02:58:02,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:58:02,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 143 transitions, 1697 flow. Second operand has 21 states, 21 states have (on average 73.71428571428571) internal successors, (1548), 21 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:02,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:58:02,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:58:02,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:58:03,302 INFO L130 PetriNetUnfolder]: 253/575 cut-off events. [2023-09-01 02:58:03,302 INFO L131 PetriNetUnfolder]: For 4380/4380 co-relation queries the response was YES. [2023-09-01 02:58:03,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3369 conditions, 575 events. 253/575 cut-off events. For 4380/4380 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3043 event pairs, 3 based on Foata normal form. 5/572 useless extension candidates. Maximal degree in co-relation 3322. Up to 173 conditions per place. [2023-09-01 02:58:03,305 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 93 selfloop transitions, 19 changer transitions 74/186 dead transitions. [2023-09-01 02:58:03,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 186 transitions, 2250 flow [2023-09-01 02:58:03,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-09-01 02:58:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-09-01 02:58:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1378 transitions. [2023-09-01 02:58:03,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4183363691560413 [2023-09-01 02:58:03,306 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1378 transitions. [2023-09-01 02:58:03,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1378 transitions. [2023-09-01 02:58:03,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:58:03,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1378 transitions. [2023-09-01 02:58:03,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 76.55555555555556) internal successors, (1378), 18 states have internal predecessors, (1378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:03,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:03,309 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 183.0) internal successors, (3477), 19 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:03,310 INFO L175 Difference]: Start difference. First operand has 204 places, 143 transitions, 1697 flow. Second operand 18 states and 1378 transitions. [2023-09-01 02:58:03,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 186 transitions, 2250 flow [2023-09-01 02:58:03,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 186 transitions, 2020 flow, removed 31 selfloop flow, removed 32 redundant places. [2023-09-01 02:58:03,322 INFO L231 Difference]: Finished difference. Result has 181 places, 96 transitions, 967 flow [2023-09-01 02:58:03,322 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=1491, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=967, PETRI_PLACES=181, PETRI_TRANSITIONS=96} [2023-09-01 02:58:03,323 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 152 predicate places. [2023-09-01 02:58:03,323 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 96 transitions, 967 flow [2023-09-01 02:58:03,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 73.71428571428571) internal successors, (1548), 21 states have internal predecessors, (1548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:03,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:58:03,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:58:03,328 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-09-01 02:58:03,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:03,525 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:58:03,526 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:58:03,526 INFO L85 PathProgramCache]: Analyzing trace with hash -2068778340, now seen corresponding path program 13 times [2023-09-01 02:58:03,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:58:03,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50757901] [2023-09-01 02:58:03,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:58:03,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:58:03,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:58:03,692 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:03,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:58:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50757901] [2023-09-01 02:58:03,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50757901] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:58:03,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796278237] [2023-09-01 02:58:03,694 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-09-01 02:58:03,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:03,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:58:03,697 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:58:03,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-09-01 02:58:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:58:03,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:58:03,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:58:03,951 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:03,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:58:04,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-09-01 02:58:04,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796278237] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:58:04,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:58:04,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 20 [2023-09-01 02:58:04,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314368981] [2023-09-01 02:58:04,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:58:04,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-09-01 02:58:04,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:58:04,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-09-01 02:58:04,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-09-01 02:58:04,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:58:04,203 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 96 transitions, 967 flow. Second operand has 22 states, 22 states have (on average 73.5909090909091) internal successors, (1619), 22 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:04,203 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:58:04,203 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:58:04,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:58:04,511 INFO L130 PetriNetUnfolder]: 146/330 cut-off events. [2023-09-01 02:58:04,511 INFO L131 PetriNetUnfolder]: For 2308/2308 co-relation queries the response was YES. [2023-09-01 02:58:04,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1905 conditions, 330 events. 146/330 cut-off events. For 2308/2308 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1447 event pairs, 1 based on Foata normal form. 7/329 useless extension candidates. Maximal degree in co-relation 1866. Up to 179 conditions per place. [2023-09-01 02:58:04,513 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 68 selfloop transitions, 8 changer transitions 53/129 dead transitions. [2023-09-01 02:58:04,513 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 129 transitions, 1440 flow [2023-09-01 02:58:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 02:58:04,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 02:58:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1214 transitions. [2023-09-01 02:58:04,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4146174863387978 [2023-09-01 02:58:04,514 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1214 transitions. [2023-09-01 02:58:04,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1214 transitions. [2023-09-01 02:58:04,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:58:04,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1214 transitions. [2023-09-01 02:58:04,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.875) internal successors, (1214), 16 states have internal predecessors, (1214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:04,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:04,518 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:04,518 INFO L175 Difference]: Start difference. First operand has 181 places, 96 transitions, 967 flow. Second operand 16 states and 1214 transitions. [2023-09-01 02:58:04,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 129 transitions, 1440 flow [2023-09-01 02:58:04,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 1179 flow, removed 25 selfloop flow, removed 38 redundant places. [2023-09-01 02:58:04,525 INFO L231 Difference]: Finished difference. Result has 130 places, 73 transitions, 547 flow [2023-09-01 02:58:04,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=547, PETRI_PLACES=130, PETRI_TRANSITIONS=73} [2023-09-01 02:58:04,526 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 101 predicate places. [2023-09-01 02:58:04,526 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 73 transitions, 547 flow [2023-09-01 02:58:04,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 73.5909090909091) internal successors, (1619), 22 states have internal predecessors, (1619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:04,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 02:58:04,526 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 02:58:04,531 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2023-09-01 02:58:04,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-09-01 02:58:04,729 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2023-09-01 02:58:04,729 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 02:58:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash 487384991, now seen corresponding path program 14 times [2023-09-01 02:58:04,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 02:58:04,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710964563] [2023-09-01 02:58:04,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 02:58:04,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 02:58:04,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 02:58:04,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:58:04,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 02:58:04,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710964563] [2023-09-01 02:58:04,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710964563] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 02:58:04,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958083641] [2023-09-01 02:58:04,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 02:58:04,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:04,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 02:58:04,869 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 02:58:04,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-09-01 02:58:04,947 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-09-01 02:58:04,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 02:58:04,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 29 conjunts are in the unsatisfiable core [2023-09-01 02:58:04,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 02:58:05,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 02:58:05,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 02:58:05,168 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-09-01 02:58:05,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958083641] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 02:58:05,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 02:58:05,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2023-09-01 02:58:05,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609324886] [2023-09-01 02:58:05,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 02:58:05,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-09-01 02:58:05,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 02:58:05,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-09-01 02:58:05,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-09-01 02:58:05,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 183 [2023-09-01 02:58:05,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 73 transitions, 547 flow. Second operand has 20 states, 20 states have (on average 73.7) internal successors, (1474), 20 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:05,298 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 02:58:05,298 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 183 [2023-09-01 02:58:05,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 02:58:05,572 INFO L130 PetriNetUnfolder]: 110/216 cut-off events. [2023-09-01 02:58:05,572 INFO L131 PetriNetUnfolder]: For 421/421 co-relation queries the response was YES. [2023-09-01 02:58:05,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1088 conditions, 216 events. 110/216 cut-off events. For 421/421 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 739 event pairs, 0 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 1063. Up to 76 conditions per place. [2023-09-01 02:58:05,573 INFO L137 encePairwiseOnDemand]: 175/183 looper letters, 0 selfloop transitions, 0 changer transitions 102/102 dead transitions. [2023-09-01 02:58:05,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 102 transitions, 938 flow [2023-09-01 02:58:05,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 02:58:05,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 02:58:05,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1200 transitions. [2023-09-01 02:58:05,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4098360655737705 [2023-09-01 02:58:05,574 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1200 transitions. [2023-09-01 02:58:05,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1200 transitions. [2023-09-01 02:58:05,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 02:58:05,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1200 transitions. [2023-09-01 02:58:05,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 75.0) internal successors, (1200), 16 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:05,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:05,578 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 183.0) internal successors, (3111), 17 states have internal predecessors, (3111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:05,578 INFO L175 Difference]: Start difference. First operand has 130 places, 73 transitions, 547 flow. Second operand 16 states and 1200 transitions. [2023-09-01 02:58:05,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 102 transitions, 938 flow [2023-09-01 02:58:05,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 102 transitions, 840 flow, removed 7 selfloop flow, removed 14 redundant places. [2023-09-01 02:58:05,582 INFO L231 Difference]: Finished difference. Result has 95 places, 0 transitions, 0 flow [2023-09-01 02:58:05,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=183, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=95, PETRI_TRANSITIONS=0} [2023-09-01 02:58:05,583 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 66 predicate places. [2023-09-01 02:58:05,583 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 0 transitions, 0 flow [2023-09-01 02:58:05,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 73.7) internal successors, (1474), 20 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 02:58:05,585 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2023-09-01 02:58:05,586 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2023-09-01 02:58:05,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (3 of 12 remaining) [2023-09-01 02:58:05,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining) [2023-09-01 02:58:05,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining) [2023-09-01 02:58:05,587 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining) [2023-09-01 02:58:05,592 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-09-01 02:58:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 02:58:05,793 INFO L445 BasicCegarLoop]: Path program histogram: [20, 14, 6, 1, 1, 1, 1, 1] [2023-09-01 02:58:05,795 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-09-01 02:58:05,795 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-09-01 02:58:05,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.09 02:58:05 BasicIcfg [2023-09-01 02:58:05,798 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-09-01 02:58:05,798 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-09-01 02:58:05,798 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-09-01 02:58:05,798 INFO L275 PluginConnector]: Witness Printer initialized [2023-09-01 02:58:05,799 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 02:57:05" (3/4) ... [2023-09-01 02:58:05,800 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-09-01 02:58:05,804 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-09-01 02:58:05,804 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-09-01 02:58:05,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-09-01 02:58:05,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-09-01 02:58:05,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-09-01 02:58:05,808 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-09-01 02:58:05,838 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-09-01 02:58:05,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-09-01 02:58:05,839 INFO L158 Benchmark]: Toolchain (without parser) took 61534.67ms. Allocated memory was 75.5MB in the beginning and 377.5MB in the end (delta: 302.0MB). Free memory was 53.1MB in the beginning and 265.1MB in the end (delta: -212.0MB). Peak memory consumption was 91.7MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,839 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:58:05,840 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.62ms. Allocated memory is still 75.5MB. Free memory was 52.9MB in the beginning and 42.2MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,840 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.53ms. Allocated memory is still 75.5MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,840 INFO L158 Benchmark]: Boogie Preprocessor took 42.00ms. Allocated memory is still 75.5MB. Free memory was 40.5MB in the beginning and 39.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-09-01 02:58:05,840 INFO L158 Benchmark]: RCFGBuilder took 461.94ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 42.9MB in the end (delta: -3.8MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,841 INFO L158 Benchmark]: TraceAbstraction took 60741.70ms. Allocated memory was 75.5MB in the beginning and 377.5MB in the end (delta: 302.0MB). Free memory was 42.2MB in the beginning and 266.9MB in the end (delta: -224.8MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,841 INFO L158 Benchmark]: Witness Printer took 40.74ms. Allocated memory is still 377.5MB. Free memory was 266.9MB in the beginning and 265.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-09-01 02:58:05,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 58.7MB. Free memory was 36.9MB in the beginning and 36.8MB in the end (delta: 98.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.62ms. Allocated memory is still 75.5MB. Free memory was 52.9MB in the beginning and 42.2MB in the end (delta: 10.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.53ms. Allocated memory is still 75.5MB. Free memory was 42.2MB in the beginning and 40.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.00ms. Allocated memory is still 75.5MB. Free memory was 40.5MB in the beginning and 39.1MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 461.94ms. Allocated memory is still 75.5MB. Free memory was 39.1MB in the beginning and 42.9MB in the end (delta: -3.8MB). Peak memory consumption was 6.0MB. Max. memory is 16.1GB. * TraceAbstraction took 60741.70ms. Allocated memory was 75.5MB in the beginning and 377.5MB in the end (delta: 302.0MB). Free memory was 42.2MB in the beginning and 266.9MB in the end (delta: -224.8MB). Peak memory consumption was 77.4MB. Max. memory is 16.1GB. * Witness Printer took 40.74ms. Allocated memory is still 377.5MB. Free memory was 266.9MB in the beginning and 265.1MB in the end (delta: 1.8MB). 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, 91 PlacesBefore, 29 PlacesAfterwards, 90 TransitionsBefore, 24 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 53 TrivialSequentialCompositions, 23 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 87 TotalNumberOfCompositions, 712 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 697, independent: 694, independent conditional: 0, independent unconditional: 694, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 353, independent: 351, independent conditional: 0, independent unconditional: 351, dependent: 2, dependent conditional: 0, dependent unconditional: 2, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 697, independent: 343, independent conditional: 0, independent unconditional: 343, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 353, unknown conditional: 0, unknown unconditional: 353] , Statistics on independence cache: Total cache size (in pairs): 27, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 76]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 61]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 111 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 60.6s, OverallIterations: 45, TraceHistogramMax: 3, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 29.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8266 SdHoareTripleChecker+Valid, 13.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7653 mSDsluCounter, 3276 SdHoareTripleChecker+Invalid, 11.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3035 mSDsCounter, 828 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 29619 IncrementalHoareTripleChecker+Invalid, 30447 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 828 mSolverCounterUnsat, 241 mSDtfsCounter, 29619 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1743 GetRequests, 556 SyntacticMatches, 37 SemanticMatches, 1150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10896 ImplicationChecksByTransitivity, 17.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2868occurred in iteration=34, InterpolantAutomatonStates: 751, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 17.9s InterpolantComputationTime, 1139 NumberOfCodeBlocks, 1139 NumberOfCodeBlocksAsserted, 115 NumberOfCheckSat, 1548 ConstructedInterpolants, 0 QuantifiedInterpolants, 18506 SizeOfPredicates, 136 NumberOfNonLiveVariables, 4696 ConjunctsInSsa, 842 ConjunctsInUnsatCore, 113 InterpolantComputations, 11 PerfectInterpolantSequences, 17/375 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 10 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-09-01 02:58:05,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE