./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --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 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:08:17,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:08:17,659 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:08:17,664 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:08:17,665 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:08:17,687 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:08:17,688 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:08:17,689 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:08:17,689 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:08:17,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:08:17,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:08:17,692 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:08:17,692 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:08:17,693 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:08:17,694 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:08:17,694 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:08:17,695 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:08:17,695 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:08:17,696 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:08:17,697 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:08:17,697 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:08:17,698 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:08:17,698 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:08:17,699 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:08:17,699 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:08:17,700 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:08:17,700 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:08:17,701 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:08:17,701 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:08:17,702 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:08:17,702 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:17,703 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:08:17,703 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:08:17,703 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:08:17,704 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:08:17,704 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:08:17,704 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:08:17,704 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:08:17,705 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:08:17,705 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fc83f7400faec1e297c0070148ef6e08fc24a46b81d9a9e52a0ee501a0da326 [2023-11-21 22:08:18,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:08:18,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:08:18,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:08:18,050 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:08:18,050 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:08:18,052 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2023-11-21 22:08:21,157 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:08:21,479 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:08:21,480 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/sv-benchmarks/c/pthread-wmm/mix014_tso.oepc.i [2023-11-21 22:08:21,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/data/9482ba7d8/a4484bfc34c742838d887fde4e73c6c6/FLAG97c479ef7 [2023-11-21 22:08:21,541 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/data/9482ba7d8/a4484bfc34c742838d887fde4e73c6c6 [2023-11-21 22:08:21,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:08:21,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:08:21,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:21,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:08:21,552 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:08:21,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:21" (1/1) ... [2023-11-21 22:08:21,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@554d123e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:21, skipping insertion in model container [2023-11-21 22:08:21,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:08:21" (1/1) ... [2023-11-21 22:08:21,621 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:08:22,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:22,245 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:08:22,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:08:22,401 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:08:22,401 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:08:22,410 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:08:22,410 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22 WrapperNode [2023-11-21 22:08:22,411 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:08:22,413 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:22,413 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:08:22,413 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:08:22,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,465 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,511 INFO L138 Inliner]: procedures = 177, calls = 73, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 271 [2023-11-21 22:08:22,512 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:08:22,513 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:08:22,513 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:08:22,513 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:08:22,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,538 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,538 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,555 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,558 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,563 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,573 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:08:22,574 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:08:22,574 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:08:22,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:08:22,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (1/1) ... [2023-11-21 22:08:22,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:08:22,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:08:22,654 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:08:22,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e6bf725b-a6ce-4c99-8615-dd01f48b8ca0/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:08:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:08:22,729 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:08:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:08:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:08:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:08:22,730 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:08:22,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:08:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:08:22,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:08:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:08:22,731 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:08:22,731 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:08:22,732 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:08:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:08:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:08:22,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:08:22,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:08:22,734 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:08:22,981 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:08:22,984 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:08:23,535 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:08:23,993 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:08:23,993 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:08:23,995 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:23 BoogieIcfgContainer [2023-11-21 22:08:23,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:08:24,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:08:24,012 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:08:24,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:08:24,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:08:21" (1/3) ... [2023-11-21 22:08:24,016 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f79888b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:24, skipping insertion in model container [2023-11-21 22:08:24,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:08:22" (2/3) ... [2023-11-21 22:08:24,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f79888b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:08:24, skipping insertion in model container [2023-11-21 22:08:24,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:08:23" (3/3) ... [2023-11-21 22:08:24,021 INFO L112 eAbstractionObserver]: Analyzing ICFG mix014_tso.oepc.i [2023-11-21 22:08:24,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:08:24,053 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-21 22:08:24,053 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:08:24,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:08:24,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 68 transitions, 152 flow [2023-11-21 22:08:24,228 INFO L124 PetriNetUnfolderBase]: 2/64 cut-off events. [2023-11-21 22:08:24,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:24,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 64 events. 2/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 146 event pairs, 0 based on Foata normal form. 0/50 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-11-21 22:08:24,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 79 places, 68 transitions, 152 flow [2023-11-21 22:08:24,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 64 transitions, 140 flow [2023-11-21 22:08:24,257 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:08:24,266 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;@77631c48, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:08:24,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-21 22:08:24,272 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:08:24,272 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:08:24,272 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:08:24,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:24,273 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:08:24,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:24,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:24,282 INFO L85 PathProgramCache]: Analyzing trace with hash 20520, now seen corresponding path program 1 times [2023-11-21 22:08:24,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:24,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526991356] [2023-11-21 22:08:24,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:24,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:24,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:24,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:24,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:24,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526991356] [2023-11-21 22:08:24,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526991356] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:24,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:24,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:24,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274931172] [2023-11-21 22:08:24,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:24,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:24,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:24,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:24,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:24,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-21 22:08:24,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:24,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:24,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-21 22:08:24,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:28,346 INFO L124 PetriNetUnfolderBase]: 8720/14022 cut-off events. [2023-11-21 22:08:28,347 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-11-21 22:08:28,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26103 conditions, 14022 events. 8720/14022 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 108621 event pairs, 6836 based on Foata normal form. 630/13065 useless extension candidates. Maximal degree in co-relation 26088. Up to 9301 conditions per place. [2023-11-21 22:08:28,573 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 43 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-21 22:08:28,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 74 transitions, 250 flow [2023-11-21 22:08:28,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:28,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:28,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-21 22:08:28,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-21 22:08:28,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-21 22:08:28,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-21 22:08:28,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:28,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-21 22:08:28,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:28,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:28,607 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:28,609 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 140 flow. Second operand 3 states and 147 transitions. [2023-11-21 22:08:28,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 74 transitions, 250 flow [2023-11-21 22:08:28,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 246 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:08:28,628 INFO L231 Difference]: Finished difference. Result has 71 places, 60 transitions, 132 flow [2023-11-21 22:08:28,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=71, PETRI_TRANSITIONS=60} [2023-11-21 22:08:28,634 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-21 22:08:28,635 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 60 transitions, 132 flow [2023-11-21 22:08:28,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:28,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:28,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:08:28,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:08:28,637 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:28,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:28,638 INFO L85 PathProgramCache]: Analyzing trace with hash 20521, now seen corresponding path program 1 times [2023-11-21 22:08:28,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:28,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833192146] [2023-11-21 22:08:28,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:28,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:28,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:28,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833192146] [2023-11-21 22:08:28,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833192146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:28,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:28,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:28,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55101334] [2023-11-21 22:08:28,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:28,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:28,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:28,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:28,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:28,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-21 22:08:28,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 60 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:28,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:28,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-21 22:08:28,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:32,059 INFO L124 PetriNetUnfolderBase]: 8720/14021 cut-off events. [2023-11-21 22:08:32,059 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-11-21 22:08:32,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26414 conditions, 14021 events. 8720/14021 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 108695 event pairs, 6836 based on Foata normal form. 1/12435 useless extension candidates. Maximal degree in co-relation 26403. Up to 9300 conditions per place. [2023-11-21 22:08:32,190 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 42 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-11-21 22:08:32,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 73 transitions, 246 flow [2023-11-21 22:08:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-21 22:08:32,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-21 22:08:32,198 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-21 22:08:32,198 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-21 22:08:32,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:32,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-21 22:08:32,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:32,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:32,204 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:32,205 INFO L175 Difference]: Start difference. First operand has 71 places, 60 transitions, 132 flow. Second operand 3 states and 147 transitions. [2023-11-21 22:08:32,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 73 transitions, 246 flow [2023-11-21 22:08:32,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 73 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:32,268 INFO L231 Difference]: Finished difference. Result has 70 places, 59 transitions, 130 flow [2023-11-21 22:08:32,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=70, PETRI_TRANSITIONS=59} [2023-11-21 22:08:32,269 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2023-11-21 22:08:32,271 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 59 transitions, 130 flow [2023-11-21 22:08:32,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:32,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:32,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:32,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:08:32,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:32,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:32,277 INFO L85 PathProgramCache]: Analyzing trace with hash 611944996, now seen corresponding path program 1 times [2023-11-21 22:08:32,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:32,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464011215] [2023-11-21 22:08:32,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:32,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:32,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:32,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:32,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464011215] [2023-11-21 22:08:32,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464011215] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:32,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:32,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:32,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823565723] [2023-11-21 22:08:32,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:32,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:32,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:32,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:32,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-21 22:08:32,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 59 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:32,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:32,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-21 22:08:32,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:34,917 INFO L124 PetriNetUnfolderBase]: 8722/14020 cut-off events. [2023-11-21 22:08:34,918 INFO L125 PetriNetUnfolderBase]: For 315/315 co-relation queries the response was YES. [2023-11-21 22:08:34,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26418 conditions, 14020 events. 8722/14020 cut-off events. For 315/315 co-relation queries the response was YES. Maximal size of possible extension queue 798. Compared 108922 event pairs, 5616 based on Foata normal form. 0/12440 useless extension candidates. Maximal degree in co-relation 26407. Up to 9301 conditions per place. [2023-11-21 22:08:35,030 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 43 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-21 22:08:35,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 72 transitions, 246 flow [2023-11-21 22:08:35,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:35,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:35,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-21 22:08:35,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2023-11-21 22:08:35,032 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-21 22:08:35,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-21 22:08:35,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:35,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-21 22:08:35,034 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:35,035 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:35,035 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:35,035 INFO L175 Difference]: Start difference. First operand has 70 places, 59 transitions, 130 flow. Second operand 3 states and 145 transitions. [2023-11-21 22:08:35,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 72 transitions, 246 flow [2023-11-21 22:08:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:35,111 INFO L231 Difference]: Finished difference. Result has 69 places, 58 transitions, 128 flow [2023-11-21 22:08:35,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=69, PETRI_TRANSITIONS=58} [2023-11-21 22:08:35,112 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-21 22:08:35,112 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 58 transitions, 128 flow [2023-11-21 22:08:35,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:35,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:35,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:08:35,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:08:35,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:35,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:35,114 INFO L85 PathProgramCache]: Analyzing trace with hash 611944997, now seen corresponding path program 1 times [2023-11-21 22:08:35,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:35,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281564590] [2023-11-21 22:08:35,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:35,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:35,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:35,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:35,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:35,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281564590] [2023-11-21 22:08:35,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281564590] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:35,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:35,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:35,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364211075] [2023-11-21 22:08:35,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:35,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:35,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:35,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:35,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:35,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-21 22:08:35,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:35,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:35,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-21 22:08:35,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:37,564 INFO L124 PetriNetUnfolderBase]: 8720/13909 cut-off events. [2023-11-21 22:08:37,564 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-11-21 22:08:37,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26304 conditions, 13909 events. 8720/13909 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 107299 event pairs, 6939 based on Foata normal form. 3/12334 useless extension candidates. Maximal degree in co-relation 26294. Up to 9296 conditions per place. [2023-11-21 22:08:37,670 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 42 selfloop transitions, 2 changer transitions 0/71 dead transitions. [2023-11-21 22:08:37,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 71 transitions, 242 flow [2023-11-21 22:08:37,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:37,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:37,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-21 22:08:37,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-21 22:08:37,673 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-21 22:08:37,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-21 22:08:37,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:37,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-21 22:08:37,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,676 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,677 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,677 INFO L175 Difference]: Start difference. First operand has 69 places, 58 transitions, 128 flow. Second operand 3 states and 147 transitions. [2023-11-21 22:08:37,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 71 transitions, 242 flow [2023-11-21 22:08:37,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 71 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:37,719 INFO L231 Difference]: Finished difference. Result has 68 places, 57 transitions, 126 flow [2023-11-21 22:08:37,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=68, PETRI_TRANSITIONS=57} [2023-11-21 22:08:37,721 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-21 22:08:37,722 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 57 transitions, 126 flow [2023-11-21 22:08:37,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:37,722 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:37,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:08:37,723 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:37,723 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:37,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1682157672, now seen corresponding path program 1 times [2023-11-21 22:08:37,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110420815] [2023-11-21 22:08:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:37,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:37,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:37,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:37,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110420815] [2023-11-21 22:08:37,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110420815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:37,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:37,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:37,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418605437] [2023-11-21 22:08:37,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:37,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:37,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:37,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:37,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:37,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-21 22:08:37,847 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 57 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:37,847 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:37,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-21 22:08:37,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:39,891 INFO L124 PetriNetUnfolderBase]: 8752/14245 cut-off events. [2023-11-21 22:08:39,891 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-11-21 22:08:39,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26693 conditions, 14245 events. 8752/14245 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 112864 event pairs, 4084 based on Foata normal form. 0/12517 useless extension candidates. Maximal degree in co-relation 26683. Up to 9309 conditions per place. [2023-11-21 22:08:40,029 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 43 selfloop transitions, 2 changer transitions 0/70 dead transitions. [2023-11-21 22:08:40,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 70 transitions, 242 flow [2023-11-21 22:08:40,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:40,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:40,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 145 transitions. [2023-11-21 22:08:40,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7107843137254902 [2023-11-21 22:08:40,033 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 145 transitions. [2023-11-21 22:08:40,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 145 transitions. [2023-11-21 22:08:40,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:40,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 145 transitions. [2023-11-21 22:08:40,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,037 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,037 INFO L175 Difference]: Start difference. First operand has 68 places, 57 transitions, 126 flow. Second operand 3 states and 145 transitions. [2023-11-21 22:08:40,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 70 transitions, 242 flow [2023-11-21 22:08:40,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 238 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:40,056 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 124 flow [2023-11-21 22:08:40,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-11-21 22:08:40,057 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -8 predicate places. [2023-11-21 22:08:40,058 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 124 flow [2023-11-21 22:08:40,058 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:40,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:40,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:08:40,059 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:40,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:40,060 INFO L85 PathProgramCache]: Analyzing trace with hash -1682157671, now seen corresponding path program 1 times [2023-11-21 22:08:40,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:40,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967651758] [2023-11-21 22:08:40,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:40,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:40,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:40,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967651758] [2023-11-21 22:08:40,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967651758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:40,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:40,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:40,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613841650] [2023-11-21 22:08:40,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:40,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:40,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:40,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:40,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:40,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-21 22:08:40,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:40,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:40,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-21 22:08:40,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:42,262 INFO L124 PetriNetUnfolderBase]: 8720/14105 cut-off events. [2023-11-21 22:08:42,262 INFO L125 PetriNetUnfolderBase]: For 333/333 co-relation queries the response was YES. [2023-11-21 22:08:42,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26518 conditions, 14105 events. 8720/14105 cut-off events. For 333/333 co-relation queries the response was YES. Maximal size of possible extension queue 792. Compared 110822 event pairs, 4339 based on Foata normal form. 21/12467 useless extension candidates. Maximal degree in co-relation 26508. Up to 9256 conditions per place. [2023-11-21 22:08:42,351 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 42 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-11-21 22:08:42,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 69 transitions, 238 flow [2023-11-21 22:08:42,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:42,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 147 transitions. [2023-11-21 22:08:42,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7205882352941176 [2023-11-21 22:08:42,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 147 transitions. [2023-11-21 22:08:42,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 147 transitions. [2023-11-21 22:08:42,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:42,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 147 transitions. [2023-11-21 22:08:42,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 49.0) internal successors, (147), 3 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,355 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,355 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 124 flow. Second operand 3 states and 147 transitions. [2023-11-21 22:08:42,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 69 transitions, 238 flow [2023-11-21 22:08:42,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 69 transitions, 234 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:42,361 INFO L231 Difference]: Finished difference. Result has 66 places, 55 transitions, 122 flow [2023-11-21 22:08:42,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=66, PETRI_TRANSITIONS=55} [2023-11-21 22:08:42,362 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -9 predicate places. [2023-11-21 22:08:42,362 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 55 transitions, 122 flow [2023-11-21 22:08:42,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,363 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:42,363 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:42,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:08:42,363 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P1Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:42,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:42,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1682156063, now seen corresponding path program 1 times [2023-11-21 22:08:42,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:42,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372791620] [2023-11-21 22:08:42,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:42,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:42,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:42,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372791620] [2023-11-21 22:08:42,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372791620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:42,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:42,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:42,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418877098] [2023-11-21 22:08:42,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:42,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:42,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:42,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:42,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:42,484 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2023-11-21 22:08:42,484 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 55 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:42,484 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:42,484 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2023-11-21 22:08:42,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:44,481 INFO L124 PetriNetUnfolderBase]: 7412/11219 cut-off events. [2023-11-21 22:08:44,482 INFO L125 PetriNetUnfolderBase]: For 285/285 co-relation queries the response was YES. [2023-11-21 22:08:44,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21799 conditions, 11219 events. 7412/11219 cut-off events. For 285/285 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 78549 event pairs, 1952 based on Foata normal form. 0/10508 useless extension candidates. Maximal degree in co-relation 21789. Up to 8746 conditions per place. [2023-11-21 22:08:44,554 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 47 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-21 22:08:44,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 74 transitions, 266 flow [2023-11-21 22:08:44,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2023-11-21 22:08:44,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7598039215686274 [2023-11-21 22:08:44,556 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 155 transitions. [2023-11-21 22:08:44,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 155 transitions. [2023-11-21 22:08:44,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:44,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 155 transitions. [2023-11-21 22:08:44,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,560 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,560 INFO L175 Difference]: Start difference. First operand has 66 places, 55 transitions, 122 flow. Second operand 3 states and 155 transitions. [2023-11-21 22:08:44,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 74 transitions, 266 flow [2023-11-21 22:08:44,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 74 transitions, 258 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:44,565 INFO L231 Difference]: Finished difference. Result has 65 places, 54 transitions, 120 flow [2023-11-21 22:08:44,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=65, PETRI_TRANSITIONS=54} [2023-11-21 22:08:44,566 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-11-21 22:08:44,566 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 54 transitions, 120 flow [2023-11-21 22:08:44,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:44,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:44,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:08:44,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:44,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:44,568 INFO L85 PathProgramCache]: Analyzing trace with hash 519841131, now seen corresponding path program 1 times [2023-11-21 22:08:44,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:44,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264094701] [2023-11-21 22:08:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:44,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:44,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:44,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:44,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264094701] [2023-11-21 22:08:44,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264094701] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:44,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:44,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:08:44,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192564891] [2023-11-21 22:08:44,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:44,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:44,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:44,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:44,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:44,794 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 35 out of 68 [2023-11-21 22:08:44,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 54 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:44,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:44,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 35 of 68 [2023-11-21 22:08:44,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:46,501 INFO L124 PetriNetUnfolderBase]: 5837/9398 cut-off events. [2023-11-21 22:08:46,501 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-21 22:08:46,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17912 conditions, 9398 events. 5837/9398 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 69180 event pairs, 1112 based on Foata normal form. 0/9284 useless extension candidates. Maximal degree in co-relation 17901. Up to 6292 conditions per place. [2023-11-21 22:08:46,558 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 43 selfloop transitions, 2 changer transitions 2/72 dead transitions. [2023-11-21 22:08:46,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 72 transitions, 254 flow [2023-11-21 22:08:46,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:46,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:46,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 153 transitions. [2023-11-21 22:08:46,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2023-11-21 22:08:46,559 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 153 transitions. [2023-11-21 22:08:46,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 153 transitions. [2023-11-21 22:08:46,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:46,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 153 transitions. [2023-11-21 22:08:46,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:46,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:46,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:46,562 INFO L175 Difference]: Start difference. First operand has 65 places, 54 transitions, 120 flow. Second operand 3 states and 153 transitions. [2023-11-21 22:08:46,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 72 transitions, 254 flow [2023-11-21 22:08:46,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 72 transitions, 248 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:46,565 INFO L231 Difference]: Finished difference. Result has 64 places, 52 transitions, 116 flow [2023-11-21 22:08:46,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2023-11-21 22:08:46,566 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-21 22:08:46,566 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 116 flow [2023-11-21 22:08:46,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:46,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:46,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:46,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:08:46,568 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:46,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:46,568 INFO L85 PathProgramCache]: Analyzing trace with hash 519840294, now seen corresponding path program 1 times [2023-11-21 22:08:46,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:46,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965879690] [2023-11-21 22:08:46,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:46,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:46,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:46,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:46,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:46,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965879690] [2023-11-21 22:08:46,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965879690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:46,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:46,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:46,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392553019] [2023-11-21 22:08:46,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:46,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:46,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:46,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:46,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-21 22:08:46,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:46,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:46,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-21 22:08:46,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:47,928 INFO L124 PetriNetUnfolderBase]: 5369/8687 cut-off events. [2023-11-21 22:08:47,928 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2023-11-21 22:08:47,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16721 conditions, 8687 events. 5369/8687 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 64194 event pairs, 2183 based on Foata normal form. 0/8420 useless extension candidates. Maximal degree in co-relation 16710. Up to 6246 conditions per place. [2023-11-21 22:08:47,963 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 38 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-11-21 22:08:47,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 63 transitions, 220 flow [2023-11-21 22:08:47,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:47,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 140 transitions. [2023-11-21 22:08:47,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6862745098039216 [2023-11-21 22:08:47,965 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 140 transitions. [2023-11-21 22:08:47,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 140 transitions. [2023-11-21 22:08:47,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:47,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 140 transitions. [2023-11-21 22:08:47,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,968 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 116 flow. Second operand 3 states and 140 transitions. [2023-11-21 22:08:47,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 63 transitions, 220 flow [2023-11-21 22:08:47,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:47,971 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 114 flow [2023-11-21 22:08:47,971 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-21 22:08:47,972 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -13 predicate places. [2023-11-21 22:08:47,972 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 114 flow [2023-11-21 22:08:47,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:47,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:47,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:47,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:08:47,974 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:47,974 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:47,974 INFO L85 PathProgramCache]: Analyzing trace with hash 519840295, now seen corresponding path program 1 times [2023-11-21 22:08:47,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:47,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307045984] [2023-11-21 22:08:47,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:47,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:48,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:48,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:48,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307045984] [2023-11-21 22:08:48,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307045984] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:48,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:48,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:08:48,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136689399] [2023-11-21 22:08:48,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:48,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:08:48,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:48,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:08:48,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:08:48,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 68 [2023-11-21 22:08:48,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:48,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:48,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 68 [2023-11-21 22:08:48,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:49,148 INFO L124 PetriNetUnfolderBase]: 5207/8435 cut-off events. [2023-11-21 22:08:49,148 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2023-11-21 22:08:49,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16036 conditions, 8435 events. 5207/8435 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 62513 event pairs, 2147 based on Foata normal form. 72/8240 useless extension candidates. Maximal degree in co-relation 16026. Up to 6012 conditions per place. [2023-11-21 22:08:49,194 INFO L140 encePairwiseOnDemand]: 65/68 looper letters, 37 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-21 22:08:49,195 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 62 transitions, 214 flow [2023-11-21 22:08:49,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:08:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:08:49,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 142 transitions. [2023-11-21 22:08:49,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.696078431372549 [2023-11-21 22:08:49,196 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 142 transitions. [2023-11-21 22:08:49,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 142 transitions. [2023-11-21 22:08:49,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:49,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 142 transitions. [2023-11-21 22:08:49,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:49,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:49,198 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:49,198 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 114 flow. Second operand 3 states and 142 transitions. [2023-11-21 22:08:49,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 62 transitions, 214 flow [2023-11-21 22:08:49,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 62 transitions, 210 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:49,202 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 112 flow [2023-11-21 22:08:49,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-21 22:08:49,203 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -14 predicate places. [2023-11-21 22:08:49,203 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 112 flow [2023-11-21 22:08:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:49,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:49,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:49,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:08:49,204 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:49,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:49,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1501979827, now seen corresponding path program 1 times [2023-11-21 22:08:49,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:49,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002543624] [2023-11-21 22:08:49,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:49,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:49,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:50,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:50,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:50,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002543624] [2023-11-21 22:08:50,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002543624] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:50,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:50,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:08:50,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175587651] [2023-11-21 22:08:50,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:50,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:08:50,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:50,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:08:50,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:08:50,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2023-11-21 22:08:50,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 112 flow. Second operand has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:50,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:50,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2023-11-21 22:08:50,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:52,655 INFO L124 PetriNetUnfolderBase]: 7034/11104 cut-off events. [2023-11-21 22:08:52,655 INFO L125 PetriNetUnfolderBase]: For 354/354 co-relation queries the response was YES. [2023-11-21 22:08:52,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21199 conditions, 11104 events. 7034/11104 cut-off events. For 354/354 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 78698 event pairs, 87 based on Foata normal form. 288/11310 useless extension candidates. Maximal degree in co-relation 21188. Up to 6210 conditions per place. [2023-11-21 22:08:52,702 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 59 selfloop transitions, 5 changer transitions 15/98 dead transitions. [2023-11-21 22:08:52,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 98 transitions, 368 flow [2023-11-21 22:08:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:08:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:08:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 328 transitions. [2023-11-21 22:08:52,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6029411764705882 [2023-11-21 22:08:52,704 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 328 transitions. [2023-11-21 22:08:52,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 328 transitions. [2023-11-21 22:08:52,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:52,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 328 transitions. [2023-11-21 22:08:52,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 41.0) internal successors, (328), 8 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:52,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:52,707 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:52,707 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 112 flow. Second operand 8 states and 328 transitions. [2023-11-21 22:08:52,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 98 transitions, 368 flow [2023-11-21 22:08:52,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 98 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:08:52,711 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 114 flow [2023-11-21 22:08:52,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=114, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-11-21 22:08:52,712 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -10 predicate places. [2023-11-21 22:08:52,712 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 114 flow [2023-11-21 22:08:52,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 32.7) internal successors, (327), 10 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:52,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:52,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:52,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:08:52,713 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:52,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1501981395, now seen corresponding path program 1 times [2023-11-21 22:08:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142375194] [2023-11-21 22:08:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:52,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:53,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:53,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:53,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142375194] [2023-11-21 22:08:53,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142375194] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:53,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:53,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:08:53,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739001125] [2023-11-21 22:08:53,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:53,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:08:53,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:08:53,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:08:53,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 68 [2023-11-21 22:08:53,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:53,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:53,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 68 [2023-11-21 22:08:53,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:55,214 INFO L124 PetriNetUnfolderBase]: 8447/13211 cut-off events. [2023-11-21 22:08:55,215 INFO L125 PetriNetUnfolderBase]: For 587/587 co-relation queries the response was YES. [2023-11-21 22:08:55,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25514 conditions, 13211 events. 8447/13211 cut-off events. For 587/587 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 95735 event pairs, 1391 based on Foata normal form. 0/12884 useless extension candidates. Maximal degree in co-relation 25503. Up to 5995 conditions per place. [2023-11-21 22:08:55,289 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 38 selfloop transitions, 2 changer transitions 64/124 dead transitions. [2023-11-21 22:08:55,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 124 transitions, 478 flow [2023-11-21 22:08:55,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:08:55,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:08:55,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 370 transitions. [2023-11-21 22:08:55,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6801470588235294 [2023-11-21 22:08:55,292 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 370 transitions. [2023-11-21 22:08:55,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 370 transitions. [2023-11-21 22:08:55,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:55,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 370 transitions. [2023-11-21 22:08:55,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 46.25) internal successors, (370), 8 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,296 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 114 flow. Second operand 8 states and 370 transitions. [2023-11-21 22:08:55,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 124 transitions, 478 flow [2023-11-21 22:08:55,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 124 transitions, 467 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-21 22:08:55,300 INFO L231 Difference]: Finished difference. Result has 70 places, 47 transitions, 119 flow [2023-11-21 22:08:55,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=119, PETRI_PLACES=70, PETRI_TRANSITIONS=47} [2023-11-21 22:08:55,301 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -5 predicate places. [2023-11-21 22:08:55,301 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 47 transitions, 119 flow [2023-11-21 22:08:55,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:55,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:55,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:08:55,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:55,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:55,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1801714077, now seen corresponding path program 1 times [2023-11-21 22:08:55,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:55,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958550036] [2023-11-21 22:08:55,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:55,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:55,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:55,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:55,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958550036] [2023-11-21 22:08:55,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958550036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:55,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:55,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:08:55,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66158195] [2023-11-21 22:08:55,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:55,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:08:55,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:08:55,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:08:55,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 68 [2023-11-21 22:08:55,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 47 transitions, 119 flow. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:55,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:55,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 68 [2023-11-21 22:08:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:08:58,362 INFO L124 PetriNetUnfolderBase]: 9695/14357 cut-off events. [2023-11-21 22:08:58,362 INFO L125 PetriNetUnfolderBase]: For 2850/2850 co-relation queries the response was YES. [2023-11-21 22:08:58,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30868 conditions, 14357 events. 9695/14357 cut-off events. For 2850/2850 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 99852 event pairs, 2187 based on Foata normal form. 360/14654 useless extension candidates. Maximal degree in co-relation 30852. Up to 8157 conditions per place. [2023-11-21 22:08:58,457 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 44 selfloop transitions, 2 changer transitions 49/113 dead transitions. [2023-11-21 22:08:58,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 113 transitions, 459 flow [2023-11-21 22:08:58,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 22:08:58,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-21 22:08:58,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 314 transitions. [2023-11-21 22:08:58,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6596638655462185 [2023-11-21 22:08:58,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 314 transitions. [2023-11-21 22:08:58,459 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 314 transitions. [2023-11-21 22:08:58,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:08:58,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 314 transitions. [2023-11-21 22:08:58,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 44.857142857142854) internal successors, (314), 7 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:58,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:58,463 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 68.0) internal successors, (544), 8 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:58,463 INFO L175 Difference]: Start difference. First operand has 70 places, 47 transitions, 119 flow. Second operand 7 states and 314 transitions. [2023-11-21 22:08:58,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 113 transitions, 459 flow [2023-11-21 22:08:58,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 113 transitions, 437 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-21 22:08:58,730 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 123 flow [2023-11-21 22:08:58,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=123, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-11-21 22:08:58,731 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -6 predicate places. [2023-11-21 22:08:58,731 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 123 flow [2023-11-21 22:08:58,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:58,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:08:58,732 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:08:58,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:08:58,732 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:08:58,733 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:08:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash -564275226, now seen corresponding path program 1 times [2023-11-21 22:08:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:08:58,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337413146] [2023-11-21 22:08:58,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:08:58,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:08:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:08:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:08:58,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:08:58,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337413146] [2023-11-21 22:08:58,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337413146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:08:58,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:08:58,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:08:58,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179428677] [2023-11-21 22:08:58,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:08:58,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:08:58,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:08:58,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:08:58,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:08:58,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-21 22:08:58,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 123 flow. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:08:58,994 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:08:58,994 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-21 22:08:58,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:01,770 INFO L124 PetriNetUnfolderBase]: 12887/18342 cut-off events. [2023-11-21 22:09:01,770 INFO L125 PetriNetUnfolderBase]: For 1582/1582 co-relation queries the response was YES. [2023-11-21 22:09:01,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39406 conditions, 18342 events. 12887/18342 cut-off events. For 1582/1582 co-relation queries the response was YES. Maximal size of possible extension queue 883. Compared 117109 event pairs, 1457 based on Foata normal form. 560/18603 useless extension candidates. Maximal degree in co-relation 39389. Up to 10465 conditions per place. [2023-11-21 22:09:01,876 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 60 selfloop transitions, 6 changer transitions 1/83 dead transitions. [2023-11-21 22:09:01,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 341 flow [2023-11-21 22:09:01,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:09:01,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:09:01,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 189 transitions. [2023-11-21 22:09:01,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6948529411764706 [2023-11-21 22:09:01,878 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 189 transitions. [2023-11-21 22:09:01,878 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 189 transitions. [2023-11-21 22:09:01,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:01,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 189 transitions. [2023-11-21 22:09:01,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:01,880 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 123 flow. Second operand 4 states and 189 transitions. [2023-11-21 22:09:01,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 341 flow [2023-11-21 22:09:02,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 83 transitions, 325 flow, removed 4 selfloop flow, removed 6 redundant places. [2023-11-21 22:09:02,032 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 153 flow [2023-11-21 22:09:02,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=153, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2023-11-21 22:09:02,033 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -11 predicate places. [2023-11-21 22:09:02,033 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 153 flow [2023-11-21 22:09:02,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:02,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:09:02,034 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:09:02,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:02,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1916956707, now seen corresponding path program 1 times [2023-11-21 22:09:02,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:02,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692452390] [2023-11-21 22:09:02,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:02,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:02,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:02,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692452390] [2023-11-21 22:09:02,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692452390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:02,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:02,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:09:02,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621226029] [2023-11-21 22:09:02,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:02,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:09:02,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:02,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:09:02,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:09:02,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-21 22:09:02,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:02,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:02,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-21 22:09:02,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:04,385 INFO L124 PetriNetUnfolderBase]: 9639/13882 cut-off events. [2023-11-21 22:09:04,385 INFO L125 PetriNetUnfolderBase]: For 3594/3594 co-relation queries the response was YES. [2023-11-21 22:09:04,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32820 conditions, 13882 events. 9639/13882 cut-off events. For 3594/3594 co-relation queries the response was YES. Maximal size of possible extension queue 617. Compared 85351 event pairs, 699 based on Foata normal form. 500/14160 useless extension candidates. Maximal degree in co-relation 32805. Up to 6361 conditions per place. [2023-11-21 22:09:04,475 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 77 selfloop transitions, 10 changer transitions 1/104 dead transitions. [2023-11-21 22:09:04,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 104 transitions, 467 flow [2023-11-21 22:09:04,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:09:04,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:09:04,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 240 transitions. [2023-11-21 22:09:04,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7058823529411765 [2023-11-21 22:09:04,477 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 240 transitions. [2023-11-21 22:09:04,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 240 transitions. [2023-11-21 22:09:04,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:04,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 240 transitions. [2023-11-21 22:09:04,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 48.0) internal successors, (240), 5 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:04,480 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:04,480 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 68.0) internal successors, (408), 6 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:04,481 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 153 flow. Second operand 5 states and 240 transitions. [2023-11-21 22:09:04,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 104 transitions, 467 flow [2023-11-21 22:09:04,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 104 transitions, 456 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-21 22:09:04,488 INFO L231 Difference]: Finished difference. Result has 68 places, 55 transitions, 205 flow [2023-11-21 22:09:04,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=68, PETRI_TRANSITIONS=55} [2023-11-21 22:09:04,489 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -7 predicate places. [2023-11-21 22:09:04,489 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 55 transitions, 205 flow [2023-11-21 22:09:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 34.0) internal successors, (170), 5 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:04,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:04,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:04,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:09:04,490 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:09:04,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:04,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1622952146, now seen corresponding path program 1 times [2023-11-21 22:09:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:04,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385562995] [2023-11-21 22:09:04,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:04,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:04,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:04,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:04,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385562995] [2023-11-21 22:09:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385562995] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:04,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:09:04,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503336871] [2023-11-21 22:09:04,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:04,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:09:04,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:04,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:09:04,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:09:04,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 68 [2023-11-21 22:09:04,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 55 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:04,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:04,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 68 [2023-11-21 22:09:04,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:06,451 INFO L124 PetriNetUnfolderBase]: 6031/8738 cut-off events. [2023-11-21 22:09:06,452 INFO L125 PetriNetUnfolderBase]: For 6537/6537 co-relation queries the response was YES. [2023-11-21 22:09:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22756 conditions, 8738 events. 6031/8738 cut-off events. For 6537/6537 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 49067 event pairs, 509 based on Foata normal form. 316/8867 useless extension candidates. Maximal degree in co-relation 22739. Up to 2540 conditions per place. [2023-11-21 22:09:06,506 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 92 selfloop transitions, 14 changer transitions 1/123 dead transitions. [2023-11-21 22:09:06,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 123 transitions, 607 flow [2023-11-21 22:09:06,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:09:06,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:09:06,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 289 transitions. [2023-11-21 22:09:06,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2023-11-21 22:09:06,508 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 289 transitions. [2023-11-21 22:09:06,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 289 transitions. [2023-11-21 22:09:06,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:06,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 289 transitions. [2023-11-21 22:09:06,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 48.166666666666664) internal successors, (289), 6 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,512 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,512 INFO L175 Difference]: Start difference. First operand has 68 places, 55 transitions, 205 flow. Second operand 6 states and 289 transitions. [2023-11-21 22:09:06,512 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 123 transitions, 607 flow [2023-11-21 22:09:06,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 123 transitions, 577 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-21 22:09:06,558 INFO L231 Difference]: Finished difference. Result has 71 places, 59 transitions, 255 flow [2023-11-21 22:09:06,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=71, PETRI_TRANSITIONS=59} [2023-11-21 22:09:06,559 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, -4 predicate places. [2023-11-21 22:09:06,559 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 59 transitions, 255 flow [2023-11-21 22:09:06,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.666666666666664) internal successors, (202), 6 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:06,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:06,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:06,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:09:06,560 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:09:06,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1954835682, now seen corresponding path program 1 times [2023-11-21 22:09:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535305412] [2023-11-21 22:09:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:09:07,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:09:07,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:09:07,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535305412] [2023-11-21 22:09:07,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535305412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:09:07,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:09:07,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:09:07,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282180] [2023-11-21 22:09:07,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:09:07,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:09:07,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:09:07,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:09:07,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:09:07,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 32 out of 68 [2023-11-21 22:09:07,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 59 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:07,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:09:07,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 32 of 68 [2023-11-21 22:09:07,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:09:09,198 INFO L124 PetriNetUnfolderBase]: 7318/11627 cut-off events. [2023-11-21 22:09:09,199 INFO L125 PetriNetUnfolderBase]: For 6165/6962 co-relation queries the response was YES. [2023-11-21 22:09:09,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27653 conditions, 11627 events. 7318/11627 cut-off events. For 6165/6962 co-relation queries the response was YES. Maximal size of possible extension queue 426. Compared 77503 event pairs, 1640 based on Foata normal form. 256/11419 useless extension candidates. Maximal degree in co-relation 27635. Up to 5250 conditions per place. [2023-11-21 22:09:09,298 INFO L140 encePairwiseOnDemand]: 63/68 looper letters, 64 selfloop transitions, 2 changer transitions 24/121 dead transitions. [2023-11-21 22:09:09,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 121 transitions, 591 flow [2023-11-21 22:09:09,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:09:09,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:09:09,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 283 transitions. [2023-11-21 22:09:09,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6936274509803921 [2023-11-21 22:09:09,301 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 283 transitions. [2023-11-21 22:09:09,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 283 transitions. [2023-11-21 22:09:09,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:09:09,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 283 transitions. [2023-11-21 22:09:09,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 47.166666666666664) internal successors, (283), 6 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,304 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 68.0) internal successors, (476), 7 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,305 INFO L175 Difference]: Start difference. First operand has 71 places, 59 transitions, 255 flow. Second operand 6 states and 283 transitions. [2023-11-21 22:09:09,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 121 transitions, 591 flow [2023-11-21 22:09:09,409 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 121 transitions, 544 flow, removed 11 selfloop flow, removed 5 redundant places. [2023-11-21 22:09:09,412 INFO L231 Difference]: Finished difference. Result has 75 places, 60 transitions, 229 flow [2023-11-21 22:09:09,412 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=229, PETRI_PLACES=75, PETRI_TRANSITIONS=60} [2023-11-21 22:09:09,413 INFO L281 CegarLoopForPetriNet]: 75 programPoint places, 0 predicate places. [2023-11-21 22:09:09,414 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 60 transitions, 229 flow [2023-11-21 22:09:09,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 35.666666666666664) internal successors, (214), 6 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:09:09,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:09:09,414 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:09:09,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:09:09,415 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P1Err0ASSERT_VIOLATIONMEMORY_LEAK, P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 15 more)] === [2023-11-21 22:09:09,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:09:09,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1616791388, now seen corresponding path program 2 times [2023-11-21 22:09:09,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:09:09,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998848482] [2023-11-21 22:09:09,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:09:09,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:09:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat