./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl --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 c0d36e1a5ffb179c1d1cdd78990789e54ced4be7c39ab7d274d26f9b2f26b935 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:04,810 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:04,890 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:18:04,896 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:04,897 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:04,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:04,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:04,928 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:04,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:04,930 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:04,931 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:04,931 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:04,932 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:04,933 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:04,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:04,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:04,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:04,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:04,935 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:18:04,936 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:18:04,937 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:18:04,937 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:04,938 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:18:04,938 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:04,938 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:04,939 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:04,939 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:04,940 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:04,940 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:04,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:04,941 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:04,942 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:04,942 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:04,943 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:04,943 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:04,944 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:04,944 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:04,945 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:04,945 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_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0d36e1a5ffb179c1d1cdd78990789e54ced4be7c39ab7d274d26f9b2f26b935 [2023-11-12 02:18:05,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:05,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:05,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:05,250 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:05,251 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:05,253 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i [2023-11-12 02:18:08,440 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:18:08,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:18:08,756 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/sv-benchmarks/c/pthread-wmm/safe012_power.oepc.i [2023-11-12 02:18:08,775 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/data/a4b803668/a54fcd025d5d4c458ee251461a4457d2/FLAG3a9788d1e [2023-11-12 02:18:08,789 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/data/a4b803668/a54fcd025d5d4c458ee251461a4457d2 [2023-11-12 02:18:08,792 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:18:08,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:18:08,795 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:08,796 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:18:08,805 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:18:08,809 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:08" (1/1) ... [2023-11-12 02:18:08,810 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abf9115 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:08, skipping insertion in model container [2023-11-12 02:18:08,811 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:18:08" (1/1) ... [2023-11-12 02:18:08,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:18:09,355 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:09,368 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:18:09,425 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:18:09,462 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:09,463 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:18:09,471 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:18:09,471 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09 WrapperNode [2023-11-12 02:18:09,471 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:18:09,473 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:09,473 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:18:09,473 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:18:09,481 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,521 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,574 INFO L138 Inliner]: procedures = 176, calls = 70, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 140 [2023-11-12 02:18:09,574 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:18:09,575 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:18:09,575 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:18:09,575 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:18:09,591 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,591 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,622 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,637 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,671 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,693 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:18:09,700 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:18:09,700 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:18:09,701 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:18:09,702 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (1/1) ... [2023-11-12 02:18:09,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:18:09,785 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:18:09,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_734e20e1-7417-4f0a-acd0-88e01cc92447/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:18:09,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:18:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:18:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:18:09,835 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:18:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:18:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:18:09,836 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-12 02:18:09,836 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-12 02:18:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-12 02:18:09,837 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-12 02:18:09,837 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-12 02:18:09,838 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-12 02:18:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:18:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:18:09,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:18:09,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:18:09,841 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:18:10,010 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:18:10,012 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:18:10,668 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:18:11,260 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:18:11,260 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:18:11,263 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:11 BoogieIcfgContainer [2023-11-12 02:18:11,263 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:18:11,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:18:11,268 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:18:11,272 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:18:11,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:18:08" (1/3) ... [2023-11-12 02:18:11,273 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92cacd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:11, skipping insertion in model container [2023-11-12 02:18:11,273 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:18:09" (2/3) ... [2023-11-12 02:18:11,275 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@92cacd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:18:11, skipping insertion in model container [2023-11-12 02:18:11,276 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:18:11" (3/3) ... [2023-11-12 02:18:11,277 INFO L112 eAbstractionObserver]: Analyzing ICFG safe012_power.oepc.i [2023-11-12 02:18:11,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:18:11,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-12 02:18:11,308 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:18:11,483 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:18:11,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 171 transitions, 354 flow [2023-11-12 02:18:11,675 INFO L124 PetriNetUnfolderBase]: 3/168 cut-off events. [2023-11-12 02:18:11,675 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:11,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 168 events. 3/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 215 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2023-11-12 02:18:11,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 171 transitions, 354 flow [2023-11-12 02:18:11,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 168 transitions, 345 flow [2023-11-12 02:18:11,701 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:18:11,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 168 transitions, 345 flow [2023-11-12 02:18:11,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 168 transitions, 345 flow [2023-11-12 02:18:11,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 168 transitions, 345 flow [2023-11-12 02:18:11,827 INFO L124 PetriNetUnfolderBase]: 3/168 cut-off events. [2023-11-12 02:18:11,827 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:11,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 168 events. 3/168 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 214 event pairs, 0 based on Foata normal form. 0/129 useless extension candidates. Maximal degree in co-relation 110. Up to 2 conditions per place. [2023-11-12 02:18:11,836 INFO L119 LiptonReduction]: Number of co-enabled transitions 5746 [2023-11-12 02:18:26,481 INFO L134 LiptonReduction]: Checked pairs total: 19753 [2023-11-12 02:18:26,481 INFO L136 LiptonReduction]: Total number of compositions: 164 [2023-11-12 02:18:26,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:18:26,503 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;@591bbe81, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:18:26,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2023-11-12 02:18:26,506 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:18:26,506 INFO L124 PetriNetUnfolderBase]: 0/1 cut-off events. [2023-11-12 02:18:26,506 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:26,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:26,507 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:18:26,507 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:26,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:26,513 INFO L85 PathProgramCache]: Analyzing trace with hash 964, now seen corresponding path program 1 times [2023-11-12 02:18:26,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:26,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12808383] [2023-11-12 02:18:26,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:26,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:26,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:26,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12808383] [2023-11-12 02:18:26,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12808383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:26,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:26,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:18:26,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976567356] [2023-11-12 02:18:26,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:26,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:18:26,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:26,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:18:26,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:18:26,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 335 [2023-11-12 02:18:26,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 133 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:26,751 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:26,751 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 335 [2023-11-12 02:18:26,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:28,449 INFO L124 PetriNetUnfolderBase]: 4714/6842 cut-off events. [2023-11-12 02:18:28,450 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:28,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13689 conditions, 6842 events. 4714/6842 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 584. Compared 41949 event pairs, 4714 based on Foata normal form. 0/3767 useless extension candidates. Maximal degree in co-relation 13678. Up to 6801 conditions per place. [2023-11-12 02:18:28,523 INFO L140 encePairwiseOnDemand]: 314/335 looper letters, 36 selfloop transitions, 0 changer transitions 0/40 dead transitions. [2023-11-12 02:18:28,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 161 flow [2023-11-12 02:18:28,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:18:28,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:18:28,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 325 transitions. [2023-11-12 02:18:28,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48507462686567165 [2023-11-12 02:18:28,546 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 325 transitions. [2023-11-12 02:18:28,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 325 transitions. [2023-11-12 02:18:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:28,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 325 transitions. [2023-11-12 02:18:28,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 162.5) internal successors, (325), 2 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:28,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:28,565 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 335.0) internal successors, (1005), 3 states have internal predecessors, (1005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:28,567 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 133 flow. Second operand 2 states and 325 transitions. [2023-11-12 02:18:28,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 161 flow [2023-11-12 02:18:28,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 40 transitions, 158 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:28,573 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 86 flow [2023-11-12 02:18:28,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=86, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-11-12 02:18:28,579 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -23 predicate places. [2023-11-12 02:18:28,579 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 86 flow [2023-11-12 02:18:28,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:28,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:28,580 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:18:28,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:18:28,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:28,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash 951944, now seen corresponding path program 1 times [2023-11-12 02:18:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:28,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989637746] [2023-11-12 02:18:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:28,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:29,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:29,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:29,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989637746] [2023-11-12 02:18:29,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989637746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:29,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:29,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:29,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696236396] [2023-11-12 02:18:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:29,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:29,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:29,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:29,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:29,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 335 [2023-11-12 02:18:29,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:29,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 335 [2023-11-12 02:18:29,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:29,950 INFO L124 PetriNetUnfolderBase]: 2095/3114 cut-off events. [2023-11-12 02:18:29,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6231 conditions, 3114 events. 2095/3114 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 17237 event pairs, 2095 based on Foata normal form. 0/2095 useless extension candidates. Maximal degree in co-relation 6228. Up to 3080 conditions per place. [2023-11-12 02:18:29,978 INFO L140 encePairwiseOnDemand]: 328/335 looper letters, 29 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-12 02:18:29,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 34 transitions, 134 flow [2023-11-12 02:18:29,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:29,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:29,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-11-12 02:18:29,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4298507462686567 [2023-11-12 02:18:29,983 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-11-12 02:18:29,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-11-12 02:18:29,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:29,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-11-12 02:18:29,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,994 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:29,997 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 86 flow. Second operand 3 states and 432 transitions. [2023-11-12 02:18:29,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 34 transitions, 134 flow [2023-11-12 02:18:29,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:18:29,999 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 76 flow [2023-11-12 02:18:30,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-11-12 02:18:30,001 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -27 predicate places. [2023-11-12 02:18:30,002 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 76 flow [2023-11-12 02:18:30,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:30,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:18:30,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:18:30,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:30,012 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash 951943, now seen corresponding path program 1 times [2023-11-12 02:18:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:30,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151209980] [2023-11-12 02:18:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:30,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:30,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:30,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:30,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151209980] [2023-11-12 02:18:30,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151209980] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:30,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:30,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481873703] [2023-11-12 02:18:30,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:30,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:30,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:30,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:30,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:30,218 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 335 [2023-11-12 02:18:30,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:30,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:30,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 335 [2023-11-12 02:18:30,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:31,014 INFO L124 PetriNetUnfolderBase]: 1885/2953 cut-off events. [2023-11-12 02:18:31,014 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:18:31,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5869 conditions, 2953 events. 1885/2953 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 16849 event pairs, 1131 based on Foata normal form. 0/2412 useless extension candidates. Maximal degree in co-relation 5865. Up to 1666 conditions per place. [2023-11-12 02:18:31,044 INFO L140 encePairwiseOnDemand]: 321/335 looper letters, 33 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-11-12 02:18:31,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 176 flow [2023-11-12 02:18:31,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:31,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-11-12 02:18:31,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42885572139303485 [2023-11-12 02:18:31,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-11-12 02:18:31,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-11-12 02:18:31,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:31,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-11-12 02:18:31,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,056 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 76 flow. Second operand 3 states and 431 transitions. [2023-11-12 02:18:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 176 flow [2023-11-12 02:18:31,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:31,058 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 135 flow [2023-11-12 02:18:31,058 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=135, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-11-12 02:18:31,059 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -26 predicate places. [2023-11-12 02:18:31,060 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 135 flow [2023-11-12 02:18:31,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:31,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:18:31,061 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:31,062 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1282136612, now seen corresponding path program 1 times [2023-11-12 02:18:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:31,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478848436] [2023-11-12 02:18:31,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:31,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:31,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:31,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:31,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478848436] [2023-11-12 02:18:31,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478848436] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:31,281 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:31,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:31,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590594303] [2023-11-12 02:18:31,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:31,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:31,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:31,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 335 [2023-11-12 02:18:31,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 135 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:31,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:31,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 335 [2023-11-12 02:18:31,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:32,105 INFO L124 PetriNetUnfolderBase]: 1671/2731 cut-off events. [2023-11-12 02:18:32,105 INFO L125 PetriNetUnfolderBase]: For 726/767 co-relation queries the response was YES. [2023-11-12 02:18:32,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6924 conditions, 2731 events. 1671/2731 cut-off events. For 726/767 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 16241 event pairs, 726 based on Foata normal form. 0/2408 useless extension candidates. Maximal degree in co-relation 6919. Up to 1713 conditions per place. [2023-11-12 02:18:32,142 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 55 selfloop transitions, 3 changer transitions 0/63 dead transitions. [2023-11-12 02:18:32,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 337 flow [2023-11-12 02:18:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:32,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:32,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-11-12 02:18:32,145 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44776119402985076 [2023-11-12 02:18:32,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-11-12 02:18:32,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-11-12 02:18:32,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:32,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-11-12 02:18:32,148 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) [2023-11-12 02:18:32,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,152 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 135 flow. Second operand 3 states and 450 transitions. [2023-11-12 02:18:32,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 337 flow [2023-11-12 02:18:32,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 311 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:32,163 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 132 flow [2023-11-12 02:18:32,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-12 02:18:32,164 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -25 predicate places. [2023-11-12 02:18:32,164 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 132 flow [2023-11-12 02:18:32,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:32,165 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:32,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:18:32,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:32,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:32,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1282136927, now seen corresponding path program 1 times [2023-11-12 02:18:32,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:32,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438499198] [2023-11-12 02:18:32,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:32,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:32,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:32,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:32,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438499198] [2023-11-12 02:18:32,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438499198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:32,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:32,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:32,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573905130] [2023-11-12 02:18:32,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:32,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:32,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:32,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:32,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:32,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 335 [2023-11-12 02:18:32,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:32,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:32,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 335 [2023-11-12 02:18:32,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:33,101 INFO L124 PetriNetUnfolderBase]: 1602/2619 cut-off events. [2023-11-12 02:18:33,102 INFO L125 PetriNetUnfolderBase]: For 664/673 co-relation queries the response was YES. [2023-11-12 02:18:33,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6792 conditions, 2619 events. 1602/2619 cut-off events. For 664/673 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 15696 event pairs, 354 based on Foata normal form. 0/2255 useless extension candidates. Maximal degree in co-relation 6786. Up to 2053 conditions per place. [2023-11-12 02:18:33,121 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 49 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-11-12 02:18:33,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 56 transitions, 300 flow [2023-11-12 02:18:33,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:33,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:33,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-11-12 02:18:33,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368159203980099 [2023-11-12 02:18:33,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-11-12 02:18:33,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-11-12 02:18:33,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:33,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-11-12 02:18:33,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,131 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 132 flow. Second operand 3 states and 439 transitions. [2023-11-12 02:18:33,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 56 transitions, 300 flow [2023-11-12 02:18:33,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 56 transitions, 290 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:33,136 INFO L231 Difference]: Finished difference. Result has 47 places, 38 transitions, 134 flow [2023-11-12 02:18:33,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=38} [2023-11-12 02:18:33,139 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -24 predicate places. [2023-11-12 02:18:33,140 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 38 transitions, 134 flow [2023-11-12 02:18:33,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:33,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:33,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:18:33,141 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:33,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:33,141 INFO L85 PathProgramCache]: Analyzing trace with hash -276903104, now seen corresponding path program 1 times [2023-11-12 02:18:33,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:33,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11834184] [2023-11-12 02:18:33,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:33,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:33,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:33,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:33,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:33,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11834184] [2023-11-12 02:18:33,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11834184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:33,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:33,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:18:33,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244060888] [2023-11-12 02:18:33,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:33,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:18:33,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:33,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:18:33,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:18:33,693 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 335 [2023-11-12 02:18:33,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 38 transitions, 134 flow. Second operand has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:33,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:33,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 335 [2023-11-12 02:18:33,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:34,497 INFO L124 PetriNetUnfolderBase]: 1709/2763 cut-off events. [2023-11-12 02:18:34,498 INFO L125 PetriNetUnfolderBase]: For 472/472 co-relation queries the response was YES. [2023-11-12 02:18:34,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7158 conditions, 2763 events. 1709/2763 cut-off events. For 472/472 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 16007 event pairs, 736 based on Foata normal form. 0/2408 useless extension candidates. Maximal degree in co-relation 7151. Up to 1741 conditions per place. [2023-11-12 02:18:34,519 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 58 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-11-12 02:18:34,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 341 flow [2023-11-12 02:18:34,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:34,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-11-12 02:18:34,523 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42014925373134326 [2023-11-12 02:18:34,523 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-11-12 02:18:34,523 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-11-12 02:18:34,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:34,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-11-12 02:18:34,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,531 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,532 INFO L175 Difference]: Start difference. First operand has 47 places, 38 transitions, 134 flow. Second operand 4 states and 563 transitions. [2023-11-12 02:18:34,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 341 flow [2023-11-12 02:18:34,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 64 transitions, 335 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:34,535 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 132 flow [2023-11-12 02:18:34,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2023-11-12 02:18:34,536 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -24 predicate places. [2023-11-12 02:18:34,536 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 132 flow [2023-11-12 02:18:34,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.0) internal successors, (780), 6 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,537 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:34,538 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:34,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:18:34,538 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:34,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:34,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1091537415, now seen corresponding path program 1 times [2023-11-12 02:18:34,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:34,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487881533] [2023-11-12 02:18:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:34,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:34,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487881533] [2023-11-12 02:18:34,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487881533] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:34,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:34,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557192922] [2023-11-12 02:18:34,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:34,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:34,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:34,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:34,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:34,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 335 [2023-11-12 02:18:34,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 132 flow. Second operand has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:34,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:34,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 335 [2023-11-12 02:18:34,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:35,487 INFO L124 PetriNetUnfolderBase]: 1786/2941 cut-off events. [2023-11-12 02:18:35,487 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2023-11-12 02:18:35,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7635 conditions, 2941 events. 1786/2941 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 18173 event pairs, 382 based on Foata normal form. 30/2646 useless extension candidates. Maximal degree in co-relation 7628. Up to 1274 conditions per place. [2023-11-12 02:18:35,508 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 47 selfloop transitions, 13 changer transitions 0/62 dead transitions. [2023-11-12 02:18:35,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 62 transitions, 320 flow [2023-11-12 02:18:35,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 569 transitions. [2023-11-12 02:18:35,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246268656716418 [2023-11-12 02:18:35,512 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 569 transitions. [2023-11-12 02:18:35,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 569 transitions. [2023-11-12 02:18:35,516 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:35,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 569 transitions. [2023-11-12 02:18:35,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.25) internal successors, (569), 4 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,522 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,523 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 132 flow. Second operand 4 states and 569 transitions. [2023-11-12 02:18:35,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 62 transitions, 320 flow [2023-11-12 02:18:35,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 313 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-12 02:18:35,526 INFO L231 Difference]: Finished difference. Result has 46 places, 40 transitions, 163 flow [2023-11-12 02:18:35,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2023-11-12 02:18:35,527 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -25 predicate places. [2023-11-12 02:18:35,527 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 163 flow [2023-11-12 02:18:35,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.0) internal successors, (520), 4 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:35,527 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:35,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:18:35,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:35,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1089940270, now seen corresponding path program 1 times [2023-11-12 02:18:35,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:35,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125944863] [2023-11-12 02:18:35,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:35,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:35,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:35,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:35,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125944863] [2023-11-12 02:18:35,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125944863] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:35,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:35,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:18:35,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885239372] [2023-11-12 02:18:35,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:35,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:18:35,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:35,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:18:35,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:18:35,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 335 [2023-11-12 02:18:35,760 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 40 transitions, 163 flow. Second operand has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:35,760 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:35,760 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 335 [2023-11-12 02:18:35,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:37,003 INFO L124 PetriNetUnfolderBase]: 3044/4882 cut-off events. [2023-11-12 02:18:37,003 INFO L125 PetriNetUnfolderBase]: For 2348/2427 co-relation queries the response was YES. [2023-11-12 02:18:37,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13678 conditions, 4882 events. 3044/4882 cut-off events. For 2348/2427 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 31861 event pairs, 891 based on Foata normal form. 76/4460 useless extension candidates. Maximal degree in co-relation 13672. Up to 1757 conditions per place. [2023-11-12 02:18:37,047 INFO L140 encePairwiseOnDemand]: 331/335 looper letters, 84 selfloop transitions, 3 changer transitions 0/91 dead transitions. [2023-11-12 02:18:37,047 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 91 transitions, 562 flow [2023-11-12 02:18:37,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:37,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:37,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 582 transitions. [2023-11-12 02:18:37,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4343283582089552 [2023-11-12 02:18:37,051 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 582 transitions. [2023-11-12 02:18:37,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 582 transitions. [2023-11-12 02:18:37,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:37,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 582 transitions. [2023-11-12 02:18:37,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,061 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,061 INFO L175 Difference]: Start difference. First operand has 46 places, 40 transitions, 163 flow. Second operand 4 states and 582 transitions. [2023-11-12 02:18:37,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 91 transitions, 562 flow [2023-11-12 02:18:37,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 91 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:37,071 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 170 flow [2023-11-12 02:18:37,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=170, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-11-12 02:18:37,075 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -21 predicate places. [2023-11-12 02:18:37,075 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 170 flow [2023-11-12 02:18:37,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 133.0) internal successors, (532), 4 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:37,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:18:37,076 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:37,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:37,082 INFO L85 PathProgramCache]: Analyzing trace with hash -522021561, now seen corresponding path program 1 times [2023-11-12 02:18:37,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:37,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702080192] [2023-11-12 02:18:37,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:37,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:37,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:37,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:37,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702080192] [2023-11-12 02:18:37,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702080192] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:37,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:37,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:18:37,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957377900] [2023-11-12 02:18:37,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:37,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:18:37,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:18:37,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:18:37,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 335 [2023-11-12 02:18:37,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 170 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:37,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:37,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 335 [2023-11-12 02:18:37,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:38,610 INFO L124 PetriNetUnfolderBase]: 2412/3918 cut-off events. [2023-11-12 02:18:38,611 INFO L125 PetriNetUnfolderBase]: For 1156/1168 co-relation queries the response was YES. [2023-11-12 02:18:38,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10788 conditions, 3918 events. 2412/3918 cut-off events. For 1156/1168 co-relation queries the response was YES. Maximal size of possible extension queue 322. Compared 24249 event pairs, 993 based on Foata normal form. 12/3344 useless extension candidates. Maximal degree in co-relation 10780. Up to 1529 conditions per place. [2023-11-12 02:18:38,650 INFO L140 encePairwiseOnDemand]: 324/335 looper letters, 46 selfloop transitions, 11 changer transitions 0/59 dead transitions. [2023-11-12 02:18:38,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 59 transitions, 353 flow [2023-11-12 02:18:38,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:18:38,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:18:38,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2023-11-12 02:18:38,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4044776119402985 [2023-11-12 02:18:38,655 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2023-11-12 02:18:38,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2023-11-12 02:18:38,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:38,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2023-11-12 02:18:38,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,663 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 335.0) internal successors, (1675), 5 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,664 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 170 flow. Second operand 4 states and 542 transitions. [2023-11-12 02:18:38,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 59 transitions, 353 flow [2023-11-12 02:18:38,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 59 transitions, 347 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:38,668 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 233 flow [2023-11-12 02:18:38,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=233, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-12 02:18:38,670 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -18 predicate places. [2023-11-12 02:18:38,670 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 233 flow [2023-11-12 02:18:38,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:38,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:38,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:18:38,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:38,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:38,673 INFO L85 PathProgramCache]: Analyzing trace with hash 213464930, now seen corresponding path program 1 times [2023-11-12 02:18:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:38,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691385023] [2023-11-12 02:18:38,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:38,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:38,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:39,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:39,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:39,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691385023] [2023-11-12 02:18:39,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691385023] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:39,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:39,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:18:39,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330759785] [2023-11-12 02:18:39,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:39,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:18:39,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:39,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:18:39,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:18:39,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 335 [2023-11-12 02:18:39,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 233 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) [2023-11-12 02:18:39,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:39,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 335 [2023-11-12 02:18:39,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:40,085 INFO L124 PetriNetUnfolderBase]: 2149/3691 cut-off events. [2023-11-12 02:18:40,086 INFO L125 PetriNetUnfolderBase]: For 2460/2501 co-relation queries the response was YES. [2023-11-12 02:18:40,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11274 conditions, 3691 events. 2149/3691 cut-off events. For 2460/2501 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 24888 event pairs, 735 based on Foata normal form. 15/3331 useless extension candidates. Maximal degree in co-relation 11265. Up to 2319 conditions per place. [2023-11-12 02:18:40,120 INFO L140 encePairwiseOnDemand]: 332/335 looper letters, 59 selfloop transitions, 4 changer transitions 0/69 dead transitions. [2023-11-12 02:18:40,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 69 transitions, 469 flow [2023-11-12 02:18:40,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:18:40,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:18:40,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-12 02:18:40,123 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44676616915422884 [2023-11-12 02:18:40,123 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-12 02:18:40,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-12 02:18:40,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:40,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-12 02:18:40,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:40,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:40,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 335.0) internal successors, (1340), 4 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:40,130 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 233 flow. Second operand 3 states and 449 transitions. [2023-11-12 02:18:40,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 69 transitions, 469 flow [2023-11-12 02:18:40,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 69 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:40,144 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 243 flow [2023-11-12 02:18:40,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=243, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2023-11-12 02:18:40,145 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -16 predicate places. [2023-11-12 02:18:40,146 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 243 flow [2023-11-12 02:18:40,146 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) [2023-11-12 02:18:40,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:40,147 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:40,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:18:40,147 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:40,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:40,148 INFO L85 PathProgramCache]: Analyzing trace with hash 997200323, now seen corresponding path program 1 times [2023-11-12 02:18:40,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:40,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528329115] [2023-11-12 02:18:40,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:40,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:40,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:40,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528329115] [2023-11-12 02:18:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528329115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:40,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664374924] [2023-11-12 02:18:40,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:40,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:40,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:40,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:40,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:40,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 335 [2023-11-12 02:18:40,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 243 flow. Second operand has 8 states, 8 states have (on average 118.75) internal successors, (950), 8 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:40,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:40,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 335 [2023-11-12 02:18:40,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:41,830 INFO L124 PetriNetUnfolderBase]: 2017/3378 cut-off events. [2023-11-12 02:18:41,830 INFO L125 PetriNetUnfolderBase]: For 2378/2384 co-relation queries the response was YES. [2023-11-12 02:18:41,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10946 conditions, 3378 events. 2017/3378 cut-off events. For 2378/2384 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 21331 event pairs, 193 based on Foata normal form. 59/3234 useless extension candidates. Maximal degree in co-relation 10935. Up to 1118 conditions per place. [2023-11-12 02:18:41,862 INFO L140 encePairwiseOnDemand]: 322/335 looper letters, 65 selfloop transitions, 18 changer transitions 0/85 dead transitions. [2023-11-12 02:18:41,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 85 transitions, 597 flow [2023-11-12 02:18:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:18:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:18:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 886 transitions. [2023-11-12 02:18:41,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37782515991471216 [2023-11-12 02:18:41,867 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 886 transitions. [2023-11-12 02:18:41,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 886 transitions. [2023-11-12 02:18:41,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:41,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 886 transitions. [2023-11-12 02:18:41,871 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 126.57142857142857) internal successors, (886), 7 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,876 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 335.0) internal successors, (2680), 8 states have internal predecessors, (2680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,877 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 243 flow. Second operand 7 states and 886 transitions. [2023-11-12 02:18:41,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 85 transitions, 597 flow [2023-11-12 02:18:41,886 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 85 transitions, 577 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:41,888 INFO L231 Difference]: Finished difference. Result has 62 places, 51 transitions, 366 flow [2023-11-12 02:18:41,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=62, PETRI_TRANSITIONS=51} [2023-11-12 02:18:41,889 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -9 predicate places. [2023-11-12 02:18:41,889 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 51 transitions, 366 flow [2023-11-12 02:18:41,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 118.75) internal successors, (950), 8 states have internal predecessors, (950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:41,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:41,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:41,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:18:41,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:41,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:41,891 INFO L85 PathProgramCache]: Analyzing trace with hash 848440318, now seen corresponding path program 1 times [2023-11-12 02:18:41,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:41,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022892338] [2023-11-12 02:18:41,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:41,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:41,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:42,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:42,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:42,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022892338] [2023-11-12 02:18:42,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022892338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:42,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:42,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:42,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538194397] [2023-11-12 02:18:42,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:42,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:42,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:42,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:42,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:43,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 335 [2023-11-12 02:18:43,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 51 transitions, 366 flow. Second operand has 9 states, 9 states have (on average 118.66666666666667) internal successors, (1068), 9 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:43,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:43,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 335 [2023-11-12 02:18:43,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:44,184 INFO L124 PetriNetUnfolderBase]: 1403/2433 cut-off events. [2023-11-12 02:18:44,184 INFO L125 PetriNetUnfolderBase]: For 3165/3188 co-relation queries the response was YES. [2023-11-12 02:18:44,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8635 conditions, 2433 events. 1403/2433 cut-off events. For 3165/3188 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 14830 event pairs, 66 based on Foata normal form. 4/2408 useless extension candidates. Maximal degree in co-relation 8622. Up to 648 conditions per place. [2023-11-12 02:18:44,207 INFO L140 encePairwiseOnDemand]: 327/335 looper letters, 62 selfloop transitions, 19 changer transitions 1/89 dead transitions. [2023-11-12 02:18:44,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 89 transitions, 657 flow [2023-11-12 02:18:44,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:44,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1119 transitions. [2023-11-12 02:18:44,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3711442786069652 [2023-11-12 02:18:44,213 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1119 transitions. [2023-11-12 02:18:44,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1119 transitions. [2023-11-12 02:18:44,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:44,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1119 transitions. [2023-11-12 02:18:44,219 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 124.33333333333333) internal successors, (1119), 9 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 335.0) internal successors, (3350), 10 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,227 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 335.0) internal successors, (3350), 10 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,227 INFO L175 Difference]: Start difference. First operand has 62 places, 51 transitions, 366 flow. Second operand 9 states and 1119 transitions. [2023-11-12 02:18:44,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 89 transitions, 657 flow [2023-11-12 02:18:44,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 89 transitions, 647 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:18:44,250 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 388 flow [2023-11-12 02:18:44,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=388, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-11-12 02:18:44,251 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-12 02:18:44,252 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 388 flow [2023-11-12 02:18:44,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 118.66666666666667) internal successors, (1068), 9 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:44,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:44,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:44,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:18:44,253 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:44,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2020741634, now seen corresponding path program 1 times [2023-11-12 02:18:44,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:44,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935217993] [2023-11-12 02:18:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:44,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:45,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:45,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:45,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935217993] [2023-11-12 02:18:45,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935217993] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:45,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:45,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:18:45,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962465736] [2023-11-12 02:18:45,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:45,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:18:45,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:45,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:18:45,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:18:45,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 335 [2023-11-12 02:18:45,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 388 flow. Second operand has 8 states, 8 states have (on average 114.75) internal successors, (918), 8 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:45,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:45,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 335 [2023-11-12 02:18:45,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:47,047 INFO L124 PetriNetUnfolderBase]: 1845/3015 cut-off events. [2023-11-12 02:18:47,047 INFO L125 PetriNetUnfolderBase]: For 4443/4453 co-relation queries the response was YES. [2023-11-12 02:18:47,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10932 conditions, 3015 events. 1845/3015 cut-off events. For 4443/4453 co-relation queries the response was YES. Maximal size of possible extension queue 212. Compared 18117 event pairs, 871 based on Foata normal form. 14/3006 useless extension candidates. Maximal degree in co-relation 10918. Up to 2574 conditions per place. [2023-11-12 02:18:47,072 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 79 selfloop transitions, 12 changer transitions 1/94 dead transitions. [2023-11-12 02:18:47,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 790 flow [2023-11-12 02:18:47,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:18:47,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:18:47,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 966 transitions. [2023-11-12 02:18:47,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3604477611940298 [2023-11-12 02:18:47,077 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 966 transitions. [2023-11-12 02:18:47,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 966 transitions. [2023-11-12 02:18:47,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:47,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 966 transitions. [2023-11-12 02:18:47,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 120.75) internal successors, (966), 8 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) [2023-11-12 02:18:47,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 335.0) internal successors, (3015), 9 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,088 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 335.0) internal successors, (3015), 9 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,088 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 388 flow. Second operand 8 states and 966 transitions. [2023-11-12 02:18:47,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 790 flow [2023-11-12 02:18:47,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 94 transitions, 729 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-12 02:18:47,113 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 473 flow [2023-11-12 02:18:47,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=473, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-11-12 02:18:47,114 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 2 predicate places. [2023-11-12 02:18:47,114 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 473 flow [2023-11-12 02:18:47,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 114.75) internal successors, (918), 8 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:47,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:47,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:47,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:18:47,115 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:47,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:47,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1769813194, now seen corresponding path program 2 times [2023-11-12 02:18:47,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:47,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434092267] [2023-11-12 02:18:47,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:47,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:18:48,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:18:48,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:18:48,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434092267] [2023-11-12 02:18:48,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434092267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:18:48,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:18:48,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:18:48,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581817991] [2023-11-12 02:18:48,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:18:48,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:18:48,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:18:48,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:18:48,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:18:48,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 335 [2023-11-12 02:18:48,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 473 flow. Second operand has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:48,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:18:48,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 335 [2023-11-12 02:18:48,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:18:49,928 INFO L124 PetriNetUnfolderBase]: 2096/3405 cut-off events. [2023-11-12 02:18:49,928 INFO L125 PetriNetUnfolderBase]: For 4520/4530 co-relation queries the response was YES. [2023-11-12 02:18:49,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12396 conditions, 3405 events. 2096/3405 cut-off events. For 4520/4530 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 20607 event pairs, 508 based on Foata normal form. 14/3399 useless extension candidates. Maximal degree in co-relation 12376. Up to 2593 conditions per place. [2023-11-12 02:18:49,952 INFO L140 encePairwiseOnDemand]: 326/335 looper letters, 81 selfloop transitions, 22 changer transitions 1/106 dead transitions. [2023-11-12 02:18:49,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 106 transitions, 906 flow [2023-11-12 02:18:49,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:18:49,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:18:49,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1100 transitions. [2023-11-12 02:18:49,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3648424543946932 [2023-11-12 02:18:49,958 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1100 transitions. [2023-11-12 02:18:49,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1100 transitions. [2023-11-12 02:18:49,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:18:49,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1100 transitions. [2023-11-12 02:18:49,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 122.22222222222223) internal successors, (1100), 9 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 335.0) internal successors, (3350), 10 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,969 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 335.0) internal successors, (3350), 10 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:49,970 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 473 flow. Second operand 9 states and 1100 transitions. [2023-11-12 02:18:49,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 106 transitions, 906 flow [2023-11-12 02:18:50,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 106 transitions, 892 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-11-12 02:18:50,007 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 638 flow [2023-11-12 02:18:50,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=335, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=638, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2023-11-12 02:18:50,008 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, 14 predicate places. [2023-11-12 02:18:50,008 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 638 flow [2023-11-12 02:18:50,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 116.55555555555556) internal successors, (1049), 9 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:18:50,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:18:50,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:18:50,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:18:50,010 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, P0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2023-11-12 02:18:50,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:18:50,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1109479024, now seen corresponding path program 3 times [2023-11-12 02:18:50,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:18:50,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344003828] [2023-11-12 02:18:50,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:18:50,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:18:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat