./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 9bd2c7ff 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_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu --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 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:35:23,763 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:35:23,883 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-19 07:35:23,892 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:35:23,895 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:35:23,929 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:35:23,930 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:35:23,930 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:35:23,931 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:35:23,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:35:23,938 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:35:23,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:35:23,939 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:35:23,941 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:35:23,941 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:35:23,941 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:35:23,942 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:35:23,942 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:35:23,943 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-19 07:35:23,943 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-19 07:35:23,944 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-19 07:35:23,944 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:35:23,945 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-19 07:35:23,946 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:35:23,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:35:23,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:35:23,948 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:35:23,949 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:35:23,949 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:35:23,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:23,951 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:35:23,951 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:35:23,951 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:35:23,952 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:35:23,952 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:35:23,952 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:35:23,952 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:35:23,953 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:35:23,953 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_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26c011a0e45020881b0eb90c07839ec48e6b26942e49028568b078c64e0cf722 [2023-11-19 07:35:24,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:35:24,305 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:35:24,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:35:24,309 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:35:24,310 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:35:24,311 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-19 07:35:27,475 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:35:27,766 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:35:27,767 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/sv-benchmarks/c/pthread-wmm/mix040_tso.oepc.i [2023-11-19 07:35:27,806 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/data/edf47e897/05af8ba753e54062ac817084486cfa36/FLAGbaa7f3c8c [2023-11-19 07:35:27,821 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/data/edf47e897/05af8ba753e54062ac817084486cfa36 [2023-11-19 07:35:27,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:35:27,826 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:35:27,828 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:27,828 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:35:27,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:35:27,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:27" (1/1) ... [2023-11-19 07:35:27,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1795294f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:27, skipping insertion in model container [2023-11-19 07:35:27,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:35:27" (1/1) ... [2023-11-19 07:35:27,907 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:35:28,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:28,470 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:35:28,572 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:35:28,623 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:28,623 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:35:28,631 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:35:28,632 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28 WrapperNode [2023-11-19 07:35:28,632 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:35:28,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:28,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:35:28,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:35:28,643 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,663 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,710 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 167 [2023-11-19 07:35:28,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:35:28,724 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:35:28,724 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:35:28,724 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:35:28,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,740 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,740 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,762 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,768 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,791 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:35:28,792 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:35:28,792 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:35:28,793 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:35:28,794 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (1/1) ... [2023-11-19 07:35:28,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:35:28,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:28,833 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:35:28,870 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bcf5de0f-e1a0-4579-a267-b21e493984ff/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:35:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:35:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:35:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:35:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:35:28,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:35:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:35:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:35:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:35:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:35:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-19 07:35:28,887 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-19 07:35:28,887 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-19 07:35:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-19 07:35:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:35:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:35:28,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:35:28,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:35:28,890 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:35:29,038 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:35:29,040 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:35:29,479 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:35:29,656 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:35:29,657 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:35:29,661 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:29 BoogieIcfgContainer [2023-11-19 07:35:29,661 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:35:29,664 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:35:29,664 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:35:29,667 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:35:29,667 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:35:27" (1/3) ... [2023-11-19 07:35:29,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa235a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:29, skipping insertion in model container [2023-11-19 07:35:29,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:35:28" (2/3) ... [2023-11-19 07:35:29,668 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2aa235a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:35:29, skipping insertion in model container [2023-11-19 07:35:29,668 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:35:29" (3/3) ... [2023-11-19 07:35:29,670 INFO L112 eAbstractionObserver]: Analyzing ICFG mix040_tso.oepc.i [2023-11-19 07:35:29,691 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:35:29,692 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-19 07:35:29,692 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:35:29,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:35:29,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:35:29,861 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:35:29,861 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:29,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 120 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:35:29,871 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 153 transitions, 322 flow [2023-11-19 07:35:29,877 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 149 transitions, 310 flow [2023-11-19 07:35:29,881 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:35:29,891 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:35:29,894 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 149 transitions, 310 flow [2023-11-19 07:35:29,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 149 transitions, 310 flow [2023-11-19 07:35:29,933 INFO L124 PetriNetUnfolderBase]: 4/149 cut-off events. [2023-11-19 07:35:29,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:29,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 4/149 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 121 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-11-19 07:35:29,965 INFO L119 LiptonReduction]: Number of co-enabled transitions 4308 [2023-11-19 07:35:38,555 INFO L134 LiptonReduction]: Checked pairs total: 10560 [2023-11-19 07:35:38,555 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-11-19 07:35:38,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:35:38,587 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;@41ac27ee, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:35:38,588 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-19 07:35:38,590 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:35:38,590 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-19 07:35:38,590 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:38,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:38,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-19 07:35:38,592 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:38,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:38,599 INFO L85 PathProgramCache]: Analyzing trace with hash 663, now seen corresponding path program 1 times [2023-11-19 07:35:38,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:38,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638921676] [2023-11-19 07:35:38,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:38,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:38,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:38,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638921676] [2023-11-19 07:35:38,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638921676] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:38,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:38,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-19 07:35:38,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423937761] [2023-11-19 07:35:38,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:38,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:35:38,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:35:38,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:35:38,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 309 [2023-11-19 07:35:38,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:38,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:38,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 309 [2023-11-19 07:35:38,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:41,052 INFO L124 PetriNetUnfolderBase]: 7463/10244 cut-off events. [2023-11-19 07:35:41,052 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2023-11-19 07:35:41,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20516 conditions, 10244 events. 7463/10244 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 52660 event pairs, 7463 based on Foata normal form. 0/8836 useless extension candidates. Maximal degree in co-relation 20504. Up to 10065 conditions per place. [2023-11-19 07:35:41,148 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 27 selfloop transitions, 0 changer transitions 0/30 dead transitions. [2023-11-19 07:35:41,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 30 transitions, 126 flow [2023-11-19 07:35:41,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:35:41,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-19 07:35:41,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 309 transitions. [2023-11-19 07:35:41,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-11-19 07:35:41,173 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 309 transitions. [2023-11-19 07:35:41,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 309 transitions. [2023-11-19 07:35:41,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:41,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 309 transitions. [2023-11-19 07:35:41,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 154.5) internal successors, (309), 2 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:41,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:41,195 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 309.0) internal successors, (927), 3 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:41,197 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 88 flow. Second operand 2 states and 309 transitions. [2023-11-19 07:35:41,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 30 transitions, 126 flow [2023-11-19 07:35:41,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 122 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:35:41,208 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 68 flow [2023-11-19 07:35:41,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=68, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-11-19 07:35:41,217 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -11 predicate places. [2023-11-19 07:35:41,217 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 68 flow [2023-11-19 07:35:41,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 137.5) internal successors, (275), 2 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:41,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:41,218 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:41,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:41,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:41,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:41,230 INFO L85 PathProgramCache]: Analyzing trace with hash 420867056, now seen corresponding path program 1 times [2023-11-19 07:35:41,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:41,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054443113] [2023-11-19 07:35:41,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:41,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:41,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:41,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:41,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:41,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054443113] [2023-11-19 07:35:41,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054443113] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:41,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:41,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:41,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348860867] [2023-11-19 07:35:41,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:41,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:41,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:41,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:41,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:41,703 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 309 [2023-11-19 07:35:41,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:41,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:41,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 309 [2023-11-19 07:35:41,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:43,375 INFO L124 PetriNetUnfolderBase]: 5879/8520 cut-off events. [2023-11-19 07:35:43,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:35:43,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16661 conditions, 8520 events. 5879/8520 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 404. Compared 48988 event pairs, 1127 based on Foata normal form. 0/7860 useless extension candidates. Maximal degree in co-relation 16658. Up to 6289 conditions per place. [2023-11-19 07:35:43,450 INFO L140 encePairwiseOnDemand]: 306/309 looper letters, 39 selfloop transitions, 2 changer transitions 2/46 dead transitions. [2023-11-19 07:35:43,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 46 transitions, 188 flow [2023-11-19 07:35:43,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:43,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 452 transitions. [2023-11-19 07:35:43,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48759439050701187 [2023-11-19 07:35:43,454 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 452 transitions. [2023-11-19 07:35:43,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 452 transitions. [2023-11-19 07:35:43,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:43,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 452 transitions. [2023-11-19 07:35:43,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.66666666666666) internal successors, (452), 3 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:43,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:43,462 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:43,463 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 68 flow. Second operand 3 states and 452 transitions. [2023-11-19 07:35:43,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 46 transitions, 188 flow [2023-11-19 07:35:43,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 46 transitions, 188 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:43,465 INFO L231 Difference]: Finished difference. Result has 41 places, 28 transitions, 68 flow [2023-11-19 07:35:43,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=41, PETRI_TRANSITIONS=28} [2023-11-19 07:35:43,466 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-11-19 07:35:43,467 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 28 transitions, 68 flow [2023-11-19 07:35:43,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:43,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:43,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:43,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:35:43,468 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:43,469 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:43,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1998681736, now seen corresponding path program 1 times [2023-11-19 07:35:43,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:43,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659710121] [2023-11-19 07:35:43,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:43,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:43,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:43,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:43,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:43,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659710121] [2023-11-19 07:35:43,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659710121] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:43,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:43,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:35:43,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134607247] [2023-11-19 07:35:43,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:43,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:43,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:43,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:43,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:43,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-11-19 07:35:43,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 28 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:43,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:43,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-11-19 07:35:43,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:45,223 INFO L124 PetriNetUnfolderBase]: 4761/6628 cut-off events. [2023-11-19 07:35:45,223 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-11-19 07:35:45,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13715 conditions, 6628 events. 4761/6628 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 304. Compared 32216 event pairs, 1999 based on Foata normal form. 0/6333 useless extension candidates. Maximal degree in co-relation 13711. Up to 5993 conditions per place. [2023-11-19 07:35:45,276 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 41 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-19 07:35:45,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 47 transitions, 202 flow [2023-11-19 07:35:45,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:45,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-19 07:35:45,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48220064724919093 [2023-11-19 07:35:45,279 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-19 07:35:45,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-19 07:35:45,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:45,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-19 07:35:45,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:45,284 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:45,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:45,286 INFO L175 Difference]: Start difference. First operand has 41 places, 28 transitions, 68 flow. Second operand 3 states and 447 transitions. [2023-11-19 07:35:45,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 47 transitions, 202 flow [2023-11-19 07:35:45,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 196 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:45,288 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 83 flow [2023-11-19 07:35:45,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-11-19 07:35:45,290 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -10 predicate places. [2023-11-19 07:35:45,290 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 83 flow [2023-11-19 07:35:45,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:45,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:45,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:45,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:35:45,292 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:45,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:45,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1998681711, now seen corresponding path program 1 times [2023-11-19 07:35:45,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:45,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282420769] [2023-11-19 07:35:45,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:45,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:46,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:46,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282420769] [2023-11-19 07:35:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282420769] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:46,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:46,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:46,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475241844] [2023-11-19 07:35:46,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:46,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:46,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:46,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:46,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:46,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 309 [2023-11-19 07:35:46,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:46,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:46,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 309 [2023-11-19 07:35:46,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:47,576 INFO L124 PetriNetUnfolderBase]: 3989/5682 cut-off events. [2023-11-19 07:35:47,577 INFO L125 PetriNetUnfolderBase]: For 848/848 co-relation queries the response was YES. [2023-11-19 07:35:47,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12470 conditions, 5682 events. 3989/5682 cut-off events. For 848/848 co-relation queries the response was YES. Maximal size of possible extension queue 261. Compared 28626 event pairs, 592 based on Foata normal form. 240/5922 useless extension candidates. Maximal degree in co-relation 12465. Up to 3655 conditions per place. [2023-11-19 07:35:47,625 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 57 selfloop transitions, 5 changer transitions 0/65 dead transitions. [2023-11-19 07:35:47,625 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 310 flow [2023-11-19 07:35:47,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:47,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:47,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 770 transitions. [2023-11-19 07:35:47,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4153182308522114 [2023-11-19 07:35:47,630 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 770 transitions. [2023-11-19 07:35:47,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 770 transitions. [2023-11-19 07:35:47,631 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:47,631 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 770 transitions. [2023-11-19 07:35:47,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,641 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,641 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 83 flow. Second operand 6 states and 770 transitions. [2023-11-19 07:35:47,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 310 flow [2023-11-19 07:35:47,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 65 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:47,644 INFO L231 Difference]: Finished difference. Result has 46 places, 30 transitions, 96 flow [2023-11-19 07:35:47,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=96, PETRI_PLACES=46, PETRI_TRANSITIONS=30} [2023-11-19 07:35:47,645 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -5 predicate places. [2023-11-19 07:35:47,645 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 30 transitions, 96 flow [2023-11-19 07:35:47,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:47,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:47,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:47,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:47,647 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:47,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:47,648 INFO L85 PathProgramCache]: Analyzing trace with hash -966437272, now seen corresponding path program 1 times [2023-11-19 07:35:47,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:47,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11990746] [2023-11-19 07:35:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:48,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:48,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:48,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11990746] [2023-11-19 07:35:48,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11990746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:48,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:48,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:48,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842232808] [2023-11-19 07:35:48,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:48,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:48,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:48,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:48,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:48,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 309 [2023-11-19 07:35:48,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 30 transitions, 96 flow. Second operand has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:48,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:48,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 309 [2023-11-19 07:35:48,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:49,482 INFO L124 PetriNetUnfolderBase]: 3429/4870 cut-off events. [2023-11-19 07:35:49,482 INFO L125 PetriNetUnfolderBase]: For 1219/1219 co-relation queries the response was YES. [2023-11-19 07:35:49,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11200 conditions, 4870 events. 3429/4870 cut-off events. For 1219/1219 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 24017 event pairs, 656 based on Foata normal form. 192/4998 useless extension candidates. Maximal degree in co-relation 11194. Up to 4486 conditions per place. [2023-11-19 07:35:49,527 INFO L140 encePairwiseOnDemand]: 304/309 looper letters, 44 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-11-19 07:35:49,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 51 transitions, 250 flow [2023-11-19 07:35:49,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:49,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:49,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 745 transitions. [2023-11-19 07:35:49,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40183387270765913 [2023-11-19 07:35:49,532 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 745 transitions. [2023-11-19 07:35:49,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 745 transitions. [2023-11-19 07:35:49,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:49,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 745 transitions. [2023-11-19 07:35:49,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 124.16666666666667) internal successors, (745), 6 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:49,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:49,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 309.0) internal successors, (2163), 7 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:49,545 INFO L175 Difference]: Start difference. First operand has 46 places, 30 transitions, 96 flow. Second operand 6 states and 745 transitions. [2023-11-19 07:35:49,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 51 transitions, 250 flow [2023-11-19 07:35:49,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 51 transitions, 240 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:35:49,552 INFO L231 Difference]: Finished difference. Result has 45 places, 29 transitions, 90 flow [2023-11-19 07:35:49,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=29} [2023-11-19 07:35:49,556 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -6 predicate places. [2023-11-19 07:35:49,556 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 29 transitions, 90 flow [2023-11-19 07:35:49,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 119.16666666666667) internal successors, (715), 6 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:49,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:49,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:49,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:35:49,558 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:49,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:49,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1733887587, now seen corresponding path program 1 times [2023-11-19 07:35:49,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:49,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666129506] [2023-11-19 07:35:49,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:49,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:49,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:50,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:50,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:50,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666129506] [2023-11-19 07:35:50,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666129506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:50,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:50,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:50,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425780045] [2023-11-19 07:35:50,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:50,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:50,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:50,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:50,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:50,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 309 [2023-11-19 07:35:50,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 29 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:50,086 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:50,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 309 [2023-11-19 07:35:50,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:51,091 INFO L124 PetriNetUnfolderBase]: 4327/6290 cut-off events. [2023-11-19 07:35:51,091 INFO L125 PetriNetUnfolderBase]: For 1499/1499 co-relation queries the response was YES. [2023-11-19 07:35:51,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13877 conditions, 6290 events. 4327/6290 cut-off events. For 1499/1499 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 33142 event pairs, 882 based on Foata normal form. 18/6292 useless extension candidates. Maximal degree in co-relation 13871. Up to 5521 conditions per place. [2023-11-19 07:35:51,144 INFO L140 encePairwiseOnDemand]: 305/309 looper letters, 42 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-11-19 07:35:51,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 47 transitions, 234 flow [2023-11-19 07:35:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:51,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:51,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-19 07:35:51,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4854368932038835 [2023-11-19 07:35:51,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-19 07:35:51,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-19 07:35:51,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:51,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-19 07:35:51,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:51,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:51,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 309.0) internal successors, (1236), 4 states have internal predecessors, (1236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:51,154 INFO L175 Difference]: Start difference. First operand has 45 places, 29 transitions, 90 flow. Second operand 3 states and 450 transitions. [2023-11-19 07:35:51,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 47 transitions, 234 flow [2023-11-19 07:35:51,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 47 transitions, 224 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:35:51,156 INFO L231 Difference]: Finished difference. Result has 44 places, 31 transitions, 102 flow [2023-11-19 07:35:51,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=44, PETRI_TRANSITIONS=31} [2023-11-19 07:35:51,157 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -7 predicate places. [2023-11-19 07:35:51,158 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 31 transitions, 102 flow [2023-11-19 07:35:51,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:51,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:51,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:51,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:35:51,159 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:51,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:51,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2084055269, now seen corresponding path program 1 times [2023-11-19 07:35:51,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:51,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130023663] [2023-11-19 07:35:51,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:51,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:51,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:51,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130023663] [2023-11-19 07:35:51,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130023663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:51,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:51,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:51,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520496842] [2023-11-19 07:35:51,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:51,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:35:51,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:35:51,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:35:51,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 309 [2023-11-19 07:35:51,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 31 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:51,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:51,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 309 [2023-11-19 07:35:51,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:52,565 INFO L124 PetriNetUnfolderBase]: 4430/6473 cut-off events. [2023-11-19 07:35:52,565 INFO L125 PetriNetUnfolderBase]: For 2221/2221 co-relation queries the response was YES. [2023-11-19 07:35:52,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15327 conditions, 6473 events. 4430/6473 cut-off events. For 2221/2221 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33941 event pairs, 670 based on Foata normal form. 12/6469 useless extension candidates. Maximal degree in co-relation 15320. Up to 4735 conditions per place. [2023-11-19 07:35:52,619 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 53 selfloop transitions, 8 changer transitions 0/63 dead transitions. [2023-11-19 07:35:52,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 318 flow [2023-11-19 07:35:52,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:35:52,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 597 transitions. [2023-11-19 07:35:52,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4830097087378641 [2023-11-19 07:35:52,624 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 597 transitions. [2023-11-19 07:35:52,624 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 597 transitions. [2023-11-19 07:35:52,625 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:52,625 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 597 transitions. [2023-11-19 07:35:52,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.25) internal successors, (597), 4 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:52,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:52,631 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:52,632 INFO L175 Difference]: Start difference. First operand has 44 places, 31 transitions, 102 flow. Second operand 4 states and 597 transitions. [2023-11-19 07:35:52,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 318 flow [2023-11-19 07:35:52,634 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:52,636 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 138 flow [2023-11-19 07:35:52,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2023-11-19 07:35:52,637 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -4 predicate places. [2023-11-19 07:35:52,637 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 138 flow [2023-11-19 07:35:52,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:52,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:52,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:52,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:35:52,639 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:52,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:52,639 INFO L85 PathProgramCache]: Analyzing trace with hash 627511277, now seen corresponding path program 2 times [2023-11-19 07:35:52,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:52,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308249896] [2023-11-19 07:35:52,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:52,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:52,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308249896] [2023-11-19 07:35:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308249896] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823573027] [2023-11-19 07:35:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:53,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:53,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:53,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:53,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-11-19 07:35:53,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:53,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:53,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-11-19 07:35:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:54,114 INFO L124 PetriNetUnfolderBase]: 4319/6302 cut-off events. [2023-11-19 07:35:54,115 INFO L125 PetriNetUnfolderBase]: For 4339/4419 co-relation queries the response was YES. [2023-11-19 07:35:54,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16494 conditions, 6302 events. 4319/6302 cut-off events. For 4339/4419 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 32812 event pairs, 668 based on Foata normal form. 60/6346 useless extension candidates. Maximal degree in co-relation 16486. Up to 4699 conditions per place. [2023-11-19 07:35:54,169 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 52 selfloop transitions, 8 changer transitions 0/62 dead transitions. [2023-11-19 07:35:54,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 340 flow [2023-11-19 07:35:54,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:35:54,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 592 transitions. [2023-11-19 07:35:54,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47896440129449835 [2023-11-19 07:35:54,173 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 592 transitions. [2023-11-19 07:35:54,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 592 transitions. [2023-11-19 07:35:54,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:54,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 592 transitions. [2023-11-19 07:35:54,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.0) internal successors, (592), 4 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,182 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,182 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 138 flow. Second operand 4 states and 592 transitions. [2023-11-19 07:35:54,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 340 flow [2023-11-19 07:35:54,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 334 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:54,188 INFO L231 Difference]: Finished difference. Result has 50 places, 35 transitions, 157 flow [2023-11-19 07:35:54,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=157, PETRI_PLACES=50, PETRI_TRANSITIONS=35} [2023-11-19 07:35:54,190 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, -1 predicate places. [2023-11-19 07:35:54,191 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 35 transitions, 157 flow [2023-11-19 07:35:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.0) internal successors, (685), 5 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:54,191 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:35:54,192 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:54,192 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:54,192 INFO L85 PathProgramCache]: Analyzing trace with hash 628466604, now seen corresponding path program 1 times [2023-11-19 07:35:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896601851] [2023-11-19 07:35:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:54,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:54,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:54,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896601851] [2023-11-19 07:35:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896601851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:54,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17351245] [2023-11-19 07:35:54,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:54,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:54,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-11-19 07:35:54,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 35 transitions, 157 flow. Second operand has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:54,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:54,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-11-19 07:35:54,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:55,773 INFO L124 PetriNetUnfolderBase]: 4437/6442 cut-off events. [2023-11-19 07:35:55,773 INFO L125 PetriNetUnfolderBase]: For 5769/5833 co-relation queries the response was YES. [2023-11-19 07:35:55,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17491 conditions, 6442 events. 4437/6442 cut-off events. For 5769/5833 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 33501 event pairs, 570 based on Foata normal form. 42/6476 useless extension candidates. Maximal degree in co-relation 17482. Up to 5199 conditions per place. [2023-11-19 07:35:55,834 INFO L140 encePairwiseOnDemand]: 303/309 looper letters, 59 selfloop transitions, 6 changer transitions 0/67 dead transitions. [2023-11-19 07:35:55,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 67 transitions, 389 flow [2023-11-19 07:35:55,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:35:55,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:35:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 584 transitions. [2023-11-19 07:35:55,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47249190938511326 [2023-11-19 07:35:55,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 584 transitions. [2023-11-19 07:35:55,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 584 transitions. [2023-11-19 07:35:55,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:55,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 584 transitions. [2023-11-19 07:35:55,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 309.0) internal successors, (1545), 5 states have internal predecessors, (1545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,845 INFO L175 Difference]: Start difference. First operand has 50 places, 35 transitions, 157 flow. Second operand 4 states and 584 transitions. [2023-11-19 07:35:55,845 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 67 transitions, 389 flow [2023-11-19 07:35:55,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 373 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:35:55,852 INFO L231 Difference]: Finished difference. Result has 51 places, 38 transitions, 175 flow [2023-11-19 07:35:55,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=175, PETRI_PLACES=51, PETRI_TRANSITIONS=38} [2023-11-19 07:35:55,853 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 0 predicate places. [2023-11-19 07:35:55,853 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 38 transitions, 175 flow [2023-11-19 07:35:55,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.0) internal successors, (675), 5 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:55,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:55,854 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:55,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:35:55,855 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:55,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash -1992466348, now seen corresponding path program 1 times [2023-11-19 07:35:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:55,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38174768] [2023-11-19 07:35:55,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:55,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:55,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:56,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:56,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:56,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38174768] [2023-11-19 07:35:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38174768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:56,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:35:56,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045749064] [2023-11-19 07:35:56,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:35:56,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 309 [2023-11-19 07:35:56,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 175 flow. Second operand has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:56,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:56,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 309 [2023-11-19 07:35:56,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:57,148 INFO L124 PetriNetUnfolderBase]: 4652/6745 cut-off events. [2023-11-19 07:35:57,148 INFO L125 PetriNetUnfolderBase]: For 7668/7804 co-relation queries the response was YES. [2023-11-19 07:35:57,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19311 conditions, 6745 events. 4652/6745 cut-off events. For 7668/7804 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 35205 event pairs, 692 based on Foata normal form. 76/6805 useless extension candidates. Maximal degree in co-relation 19301. Up to 4959 conditions per place. [2023-11-19 07:35:57,199 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 64 selfloop transitions, 12 changer transitions 0/78 dead transitions. [2023-11-19 07:35:57,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 78 transitions, 454 flow [2023-11-19 07:35:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:57,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:57,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2023-11-19 07:35:57,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47508090614886733 [2023-11-19 07:35:57,204 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2023-11-19 07:35:57,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2023-11-19 07:35:57,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:57,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2023-11-19 07:35:57,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:57,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:57,212 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:57,212 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 175 flow. Second operand 5 states and 734 transitions. [2023-11-19 07:35:57,212 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 78 transitions, 454 flow [2023-11-19 07:35:57,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 78 transitions, 444 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:35:57,221 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 222 flow [2023-11-19 07:35:57,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=222, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2023-11-19 07:35:57,222 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-11-19 07:35:57,222 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 222 flow [2023-11-19 07:35:57,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.2) internal successors, (681), 5 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:57,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:57,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:57,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:35:57,223 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:57,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1997078218, now seen corresponding path program 2 times [2023-11-19 07:35:57,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:57,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892578617] [2023-11-19 07:35:57,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:57,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:57,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:57,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:57,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:57,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892578617] [2023-11-19 07:35:57,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892578617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:57,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:57,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:57,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123044031] [2023-11-19 07:35:57,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:57,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:57,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:57,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:57,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:57,707 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-11-19 07:35:57,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:57,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:57,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-11-19 07:35:57,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:58,632 INFO L124 PetriNetUnfolderBase]: 4703/6828 cut-off events. [2023-11-19 07:35:58,632 INFO L125 PetriNetUnfolderBase]: For 10903/11079 co-relation queries the response was YES. [2023-11-19 07:35:58,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21483 conditions, 6828 events. 4703/6828 cut-off events. For 10903/11079 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 35766 event pairs, 688 based on Foata normal form. 76/6888 useless extension candidates. Maximal degree in co-relation 21472. Up to 4983 conditions per place. [2023-11-19 07:35:58,681 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 65 selfloop transitions, 14 changer transitions 0/81 dead transitions. [2023-11-19 07:35:58,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 81 transitions, 515 flow [2023-11-19 07:35:58,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:58,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:58,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 729 transitions. [2023-11-19 07:35:58,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47184466019417476 [2023-11-19 07:35:58,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 729 transitions. [2023-11-19 07:35:58,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 729 transitions. [2023-11-19 07:35:58,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:58,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 729 transitions. [2023-11-19 07:35:58,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.8) internal successors, (729), 5 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:58,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:58,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:58,704 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 222 flow. Second operand 5 states and 729 transitions. [2023-11-19 07:35:58,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 81 transitions, 515 flow [2023-11-19 07:35:58,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 81 transitions, 486 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:35:58,728 INFO L231 Difference]: Finished difference. Result has 56 places, 45 transitions, 256 flow [2023-11-19 07:35:58,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=256, PETRI_PLACES=56, PETRI_TRANSITIONS=45} [2023-11-19 07:35:58,729 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-11-19 07:35:58,729 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 45 transitions, 256 flow [2023-11-19 07:35:58,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:58,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:58,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:35:58,731 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:35:58,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2021988268, now seen corresponding path program 3 times [2023-11-19 07:35:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:58,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945043086] [2023-11-19 07:35:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:59,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:59,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:59,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945043086] [2023-11-19 07:35:59,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945043086] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:59,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:59,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:35:59,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973829552] [2023-11-19 07:35:59,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:59,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:35:59,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:59,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:35:59,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:59,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 309 [2023-11-19 07:35:59,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 45 transitions, 256 flow. Second operand has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:35:59,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:59,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 309 [2023-11-19 07:35:59,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:00,402 INFO L124 PetriNetUnfolderBase]: 5288/7653 cut-off events. [2023-11-19 07:36:00,402 INFO L125 PetriNetUnfolderBase]: For 15560/15736 co-relation queries the response was YES. [2023-11-19 07:36:00,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25297 conditions, 7653 events. 5288/7653 cut-off events. For 15560/15736 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 41433 event pairs, 618 based on Foata normal form. 100/7737 useless extension candidates. Maximal degree in co-relation 25285. Up to 4722 conditions per place. [2023-11-19 07:36:00,454 INFO L140 encePairwiseOnDemand]: 301/309 looper letters, 73 selfloop transitions, 20 changer transitions 0/95 dead transitions. [2023-11-19 07:36:00,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 95 transitions, 647 flow [2023-11-19 07:36:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:00,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:00,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-11-19 07:36:00,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4802588996763754 [2023-11-19 07:36:00,458 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-11-19 07:36:00,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-11-19 07:36:00,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:00,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-11-19 07:36:00,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,465 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,466 INFO L175 Difference]: Start difference. First operand has 56 places, 45 transitions, 256 flow. Second operand 5 states and 742 transitions. [2023-11-19 07:36:00,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 95 transitions, 647 flow [2023-11-19 07:36:00,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 95 transitions, 616 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:00,504 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 372 flow [2023-11-19 07:36:00,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=372, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-11-19 07:36:00,505 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 8 predicate places. [2023-11-19 07:36:00,505 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 372 flow [2023-11-19 07:36:00,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:00,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:00,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:00,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:36:00,506 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:00,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:00,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1994281708, now seen corresponding path program 4 times [2023-11-19 07:36:00,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:00,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846051449] [2023-11-19 07:36:00,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:00,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:01,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:01,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:01,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846051449] [2023-11-19 07:36:01,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846051449] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:01,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:01,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:01,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253211502] [2023-11-19 07:36:01,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:01,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:01,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:01,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:01,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:01,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-11-19 07:36:01,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 54 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:01,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:01,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-11-19 07:36:01,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:02,373 INFO L124 PetriNetUnfolderBase]: 5872/8469 cut-off events. [2023-11-19 07:36:02,374 INFO L125 PetriNetUnfolderBase]: For 28241/28665 co-relation queries the response was YES. [2023-11-19 07:36:02,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32055 conditions, 8469 events. 5872/8469 cut-off events. For 28241/28665 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 45579 event pairs, 830 based on Foata normal form. 244/8697 useless extension candidates. Maximal degree in co-relation 32041. Up to 5943 conditions per place. [2023-11-19 07:36:02,442 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 73 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2023-11-19 07:36:02,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 732 flow [2023-11-19 07:36:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:02,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:02,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 715 transitions. [2023-11-19 07:36:02,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627831715210356 [2023-11-19 07:36:02,447 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 715 transitions. [2023-11-19 07:36:02,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 715 transitions. [2023-11-19 07:36:02,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:02,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 715 transitions. [2023-11-19 07:36:02,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,456 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,456 INFO L175 Difference]: Start difference. First operand has 59 places, 54 transitions, 372 flow. Second operand 5 states and 715 transitions. [2023-11-19 07:36:02,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 732 flow [2023-11-19 07:36:02,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 88 transitions, 691 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-11-19 07:36:02,501 INFO L231 Difference]: Finished difference. Result has 63 places, 60 transitions, 453 flow [2023-11-19 07:36:02,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=453, PETRI_PLACES=63, PETRI_TRANSITIONS=60} [2023-11-19 07:36:02,502 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 12 predicate places. [2023-11-19 07:36:02,502 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 60 transitions, 453 flow [2023-11-19 07:36:02,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.66666666666666) internal successors, (808), 6 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:02,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:02,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:02,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:36:02,503 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:02,504 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:02,504 INFO L85 PathProgramCache]: Analyzing trace with hash 346340965, now seen corresponding path program 1 times [2023-11-19 07:36:02,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:02,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067712206] [2023-11-19 07:36:02,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:02,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:03,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:03,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:03,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067712206] [2023-11-19 07:36:03,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067712206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:03,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:03,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:03,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134704205] [2023-11-19 07:36:03,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:03,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:03,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:03,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:03,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:03,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-11-19 07:36:03,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 60 transitions, 453 flow. Second operand has 7 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:03,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:03,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-11-19 07:36:03,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:04,564 INFO L124 PetriNetUnfolderBase]: 5990/8635 cut-off events. [2023-11-19 07:36:04,565 INFO L125 PetriNetUnfolderBase]: For 35555/35959 co-relation queries the response was YES. [2023-11-19 07:36:04,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34319 conditions, 8635 events. 5990/8635 cut-off events. For 35555/35959 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 46684 event pairs, 818 based on Foata normal form. 232/8851 useless extension candidates. Maximal degree in co-relation 34304. Up to 5289 conditions per place. [2023-11-19 07:36:04,633 INFO L140 encePairwiseOnDemand]: 302/309 looper letters, 72 selfloop transitions, 32 changer transitions 0/106 dead transitions. [2023-11-19 07:36:04,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 106 transitions, 895 flow [2023-11-19 07:36:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:36:04,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:36:04,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-11-19 07:36:04,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47378640776699027 [2023-11-19 07:36:04,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-11-19 07:36:04,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-11-19 07:36:04,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:04,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-11-19 07:36:04,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,645 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 309.0) internal successors, (1854), 6 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,645 INFO L175 Difference]: Start difference. First operand has 63 places, 60 transitions, 453 flow. Second operand 5 states and 732 transitions. [2023-11-19 07:36:04,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 106 transitions, 895 flow [2023-11-19 07:36:04,873 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 106 transitions, 849 flow, removed 20 selfloop flow, removed 2 redundant places. [2023-11-19 07:36:04,875 INFO L231 Difference]: Finished difference. Result has 66 places, 66 transitions, 598 flow [2023-11-19 07:36:04,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=598, PETRI_PLACES=66, PETRI_TRANSITIONS=66} [2023-11-19 07:36:04,876 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-11-19 07:36:04,876 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 66 transitions, 598 flow [2023-11-19 07:36:04,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:04,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:04,877 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:04,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-19 07:36:04,877 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:04,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:04,878 INFO L85 PathProgramCache]: Analyzing trace with hash -1636918995, now seen corresponding path program 2 times [2023-11-19 07:36:04,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:04,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919390611] [2023-11-19 07:36:04,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:04,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:05,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:05,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919390611] [2023-11-19 07:36:05,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919390611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:05,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:05,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:36:05,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669032057] [2023-11-19 07:36:05,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:05,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:36:05,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:05,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:36:05,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:36:05,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 309 [2023-11-19 07:36:05,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 66 transitions, 598 flow. Second operand has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:05,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:05,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 309 [2023-11-19 07:36:05,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:36:07,892 INFO L124 PetriNetUnfolderBase]: 11841/16162 cut-off events. [2023-11-19 07:36:07,892 INFO L125 PetriNetUnfolderBase]: For 66468/66468 co-relation queries the response was YES. [2023-11-19 07:36:07,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64321 conditions, 16162 events. 11841/16162 cut-off events. For 66468/66468 co-relation queries the response was YES. Maximal size of possible extension queue 571. Compared 83221 event pairs, 1437 based on Foata normal form. 64/16226 useless extension candidates. Maximal degree in co-relation 64305. Up to 11907 conditions per place. [2023-11-19 07:36:07,984 INFO L140 encePairwiseOnDemand]: 296/309 looper letters, 114 selfloop transitions, 41 changer transitions 0/155 dead transitions. [2023-11-19 07:36:07,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 155 transitions, 1364 flow [2023-11-19 07:36:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:36:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:36:07,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 966 transitions. [2023-11-19 07:36:07,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44660194174757284 [2023-11-19 07:36:07,988 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 966 transitions. [2023-11-19 07:36:07,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 966 transitions. [2023-11-19 07:36:07,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:36:07,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 966 transitions. [2023-11-19 07:36:07,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 138.0) internal successors, (966), 7 states have internal predecessors, (966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,998 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 309.0) internal successors, (2472), 8 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:07,998 INFO L175 Difference]: Start difference. First operand has 66 places, 66 transitions, 598 flow. Second operand 7 states and 966 transitions. [2023-11-19 07:36:07,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 155 transitions, 1364 flow [2023-11-19 07:36:08,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 155 transitions, 1280 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-19 07:36:08,230 INFO L231 Difference]: Finished difference. Result has 73 places, 94 transitions, 953 flow [2023-11-19 07:36:08,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=309, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=953, PETRI_PLACES=73, PETRI_TRANSITIONS=94} [2023-11-19 07:36:08,231 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 22 predicate places. [2023-11-19 07:36:08,231 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 94 transitions, 953 flow [2023-11-19 07:36:08,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 124.83333333333333) internal successors, (749), 6 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:36:08,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:36:08,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:36:08,232 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P2Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-19 07:36:08,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:36:08,233 INFO L85 PathProgramCache]: Analyzing trace with hash -504951327, now seen corresponding path program 3 times [2023-11-19 07:36:08,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:36:08,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131071727] [2023-11-19 07:36:08,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:36:08,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:36:08,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:36:08,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:36:08,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:36:08,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131071727] [2023-11-19 07:36:08,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131071727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:36:08,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:36:08,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:36:08,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039546615] [2023-11-19 07:36:08,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:36:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:36:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:36:08,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:36:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:36:08,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 309 [2023-11-19 07:36:08,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 94 transitions, 953 flow. Second operand has 7 states, 7 states have (on average 134.42857142857142) internal successors, (941), 7 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:36:08,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:36:08,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 309 [2023-11-19 07:36:08,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand