./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version e7bb482b 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_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:03:15,330 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:03:15,405 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:03:15,417 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:03:15,420 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:03:15,451 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:03:15,452 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:03:15,452 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:03:15,453 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:03:15,454 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:03:15,455 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:03:15,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:03:15,456 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:03:15,457 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:03:15,457 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:03:15,458 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:03:15,458 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:03:15,462 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:03:15,463 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:03:15,464 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:03:15,464 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:03:15,465 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:03:15,466 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:03:15,466 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:03:15,467 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:03:15,467 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:03:15,468 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:03:15,468 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:03:15,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:03:15,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:15,470 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:03:15,470 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:03:15,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:03:15,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:03:15,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:03:15,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:03:15,473 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:03:15,473 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:03:15,474 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_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0c2da3652c054af11b47a99e37d3ddb516e4f65f65f3696b960347af3ebf57e8 [2023-11-06 22:03:15,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:03:15,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:03:15,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:03:15,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:03:15,810 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:03:15,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-06 22:03:19,080 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:03:19,419 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:03:19,419 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/sv-benchmarks/c/pthread-wmm/mix046.oepc.i [2023-11-06 22:03:19,447 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/data/0ed15737b/b1297d987d5d450394c186a0d8907fd4/FLAG22f30ff20 [2023-11-06 22:03:19,472 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/data/0ed15737b/b1297d987d5d450394c186a0d8907fd4 [2023-11-06 22:03:19,480 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:03:19,483 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:03:19,485 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:19,485 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:03:19,490 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:03:19,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:19" (1/1) ... [2023-11-06 22:03:19,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74c58d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:19, skipping insertion in model container [2023-11-06 22:03:19,492 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:19" (1/1) ... [2023-11-06 22:03:19,577 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:03:20,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:20,199 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:03:20,305 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:03:20,361 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:20,361 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:03:20,370 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:03:20,370 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20 WrapperNode [2023-11-06 22:03:20,370 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:03:20,372 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:20,373 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:03:20,373 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:03:20,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,422 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,455 INFO L138 Inliner]: procedures = 177, calls = 72, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 150 [2023-11-06 22:03:20,456 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:03:20,457 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:03:20,457 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:03:20,457 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:03:20,470 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,471 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,477 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,496 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,502 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:03:20,503 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:03:20,504 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:03:20,504 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:03:20,505 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (1/1) ... [2023-11-06 22:03:20,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:03:20,538 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:03:20,555 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:03:20,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cef5844f-7bd0-4c9e-b0ed-1c8e84137e1b/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:03:20,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:03:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:03:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:03:20,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:03:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:03:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-06 22:03:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-06 22:03:20,607 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-06 22:03:20,607 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-06 22:03:20,608 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-06 22:03:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-06 22:03:20,608 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-06 22:03:20,608 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-06 22:03:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:03:20,609 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:03:20,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:03:20,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:03:20,613 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:03:20,876 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:03:20,881 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:03:21,319 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:03:21,488 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:03:21,489 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:03:21,491 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:21 BoogieIcfgContainer [2023-11-06 22:03:21,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:03:21,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:03:21,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:03:21,499 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:03:21,502 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:19" (1/3) ... [2023-11-06 22:03:21,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fca518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:21, skipping insertion in model container [2023-11-06 22:03:21,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:20" (2/3) ... [2023-11-06 22:03:21,503 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fca518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:21, skipping insertion in model container [2023-11-06 22:03:21,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:21" (3/3) ... [2023-11-06 22:03:21,505 INFO L112 eAbstractionObserver]: Analyzing ICFG mix046.oepc.i [2023-11-06 22:03:21,526 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:03:21,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-11-06 22:03:21,527 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:03:21,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-06 22:03:21,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 152 transitions, 320 flow [2023-11-06 22:03:21,746 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-06 22:03:21,746 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:21,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-06 22:03:21,756 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 152 transitions, 320 flow [2023-11-06 22:03:21,762 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 148 transitions, 308 flow [2023-11-06 22:03:21,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:03:21,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-06 22:03:21,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 158 places, 148 transitions, 308 flow [2023-11-06 22:03:21,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 148 transitions, 308 flow [2023-11-06 22:03:21,835 INFO L124 PetriNetUnfolderBase]: 3/148 cut-off events. [2023-11-06 22:03:21,836 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:21,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 3/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/134 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2023-11-06 22:03:21,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 4194 [2023-11-06 22:03:27,917 INFO L134 LiptonReduction]: Checked pairs total: 11202 [2023-11-06 22:03:27,917 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-11-06 22:03:27,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:03:27,942 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;@38b1871b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:03:27,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-06 22:03:27,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:03:27,944 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:03:27,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:27,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:27,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:03:27,946 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:27,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:27,953 INFO L85 PathProgramCache]: Analyzing trace with hash 652, now seen corresponding path program 1 times [2023-11-06 22:03:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:27,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912313674] [2023-11-06 22:03:27,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:27,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:28,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:28,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:28,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912313674] [2023-11-06 22:03:28,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912313674] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:28,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:28,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:03:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497019897] [2023-11-06 22:03:28,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:03:28,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:28,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:03:28,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:03:28,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 292 [2023-11-06 22:03:28,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 94 flow. Second operand has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:28,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:28,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 292 [2023-11-06 22:03:28,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:30,869 INFO L124 PetriNetUnfolderBase]: 10487/14082 cut-off events. [2023-11-06 22:03:30,870 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-06 22:03:30,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28358 conditions, 14082 events. 10487/14082 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 72186 event pairs, 10487 based on Foata normal form. 0/12386 useless extension candidates. Maximal degree in co-relation 28346. Up to 14059 conditions per place. [2023-11-06 22:03:31,017 INFO L140 encePairwiseOnDemand]: 283/292 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-06 22:03:31,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 32 transitions, 134 flow [2023-11-06 22:03:31,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:03:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:03:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-11-06 22:03:31,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5308219178082192 [2023-11-06 22:03:31,042 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-11-06 22:03:31,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-11-06 22:03:31,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:31,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-11-06 22:03:31,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:31,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:31,062 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 292.0) internal successors, (876), 3 states have internal predecessors, (876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:31,065 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 94 flow. Second operand 2 states and 310 transitions. [2023-11-06 22:03:31,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 32 transitions, 134 flow [2023-11-06 22:03:31,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 32 transitions, 130 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:03:31,076 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 72 flow [2023-11-06 22:03:31,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=72, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-11-06 22:03:31,083 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -11 predicate places. [2023-11-06 22:03:31,084 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 72 flow [2023-11-06 22:03:31,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 136.5) internal successors, (273), 2 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:31,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:31,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:03:31,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:03:31,085 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err0ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:31,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:31,086 INFO L85 PathProgramCache]: Analyzing trace with hash 643823, now seen corresponding path program 1 times [2023-11-06 22:03:31,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:31,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406292461] [2023-11-06 22:03:31,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:31,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:31,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:31,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:31,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:31,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406292461] [2023-11-06 22:03:31,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406292461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:31,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:31,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:03:31,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798861710] [2023-11-06 22:03:31,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:31,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:31,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:31,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:31,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:31,452 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 292 [2023-11-06 22:03:31,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:31,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:31,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 292 [2023-11-06 22:03:31,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:33,427 INFO L124 PetriNetUnfolderBase]: 8247/11823 cut-off events. [2023-11-06 22:03:33,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:03:33,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23100 conditions, 11823 events. 8247/11823 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 543. Compared 72043 event pairs, 1527 based on Foata normal form. 0/11051 useless extension candidates. Maximal degree in co-relation 23097. Up to 8863 conditions per place. [2023-11-06 22:03:33,527 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 47 selfloop transitions, 2 changer transitions 2/54 dead transitions. [2023-11-06 22:03:33,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 224 flow [2023-11-06 22:03:33,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:33,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:33,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-11-06 22:03:33,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.521689497716895 [2023-11-06 22:03:33,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-11-06 22:03:33,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-11-06 22:03:33,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:33,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-11-06 22:03:33,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:33,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:33,547 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:33,548 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 72 flow. Second operand 3 states and 457 transitions. [2023-11-06 22:03:33,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 224 flow [2023-11-06 22:03:33,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 54 transitions, 224 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:03:33,550 INFO L231 Difference]: Finished difference. Result has 43 places, 30 transitions, 72 flow [2023-11-06 22:03:33,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=43, PETRI_TRANSITIONS=30} [2023-11-06 22:03:33,552 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-06 22:03:33,553 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 30 transitions, 72 flow [2023-11-06 22:03:33,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:33,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:33,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:33,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:03:33,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:33,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:33,562 INFO L85 PathProgramCache]: Analyzing trace with hash 772626204, now seen corresponding path program 1 times [2023-11-06 22:03:33,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:33,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194164821] [2023-11-06 22:03:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:33,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:33,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:33,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194164821] [2023-11-06 22:03:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194164821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:33,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:33,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:03:33,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129851617] [2023-11-06 22:03:33,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:33,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:33,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:33,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:33,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:33,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 292 [2023-11-06 22:03:33,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 30 transitions, 72 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) [2023-11-06 22:03:33,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:33,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 292 [2023-11-06 22:03:33,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:36,053 INFO L124 PetriNetUnfolderBase]: 8855/11911 cut-off events. [2023-11-06 22:03:36,053 INFO L125 PetriNetUnfolderBase]: For 761/761 co-relation queries the response was YES. [2023-11-06 22:03:36,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24784 conditions, 11911 events. 8855/11911 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 497. Compared 59871 event pairs, 1831 based on Foata normal form. 0/11457 useless extension candidates. Maximal degree in co-relation 24780. Up to 11169 conditions per place. [2023-11-06 22:03:36,134 INFO L140 encePairwiseOnDemand]: 288/292 looper letters, 40 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-11-06 22:03:36,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 192 flow [2023-11-06 22:03:36,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:36,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:36,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-11-06 22:03:36,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057077625570776 [2023-11-06 22:03:36,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-11-06 22:03:36,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-11-06 22:03:36,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:36,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-11-06 22:03:36,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:36,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:36,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:36,144 INFO L175 Difference]: Start difference. First operand has 43 places, 30 transitions, 72 flow. Second operand 3 states and 443 transitions. [2023-11-06 22:03:36,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 192 flow [2023-11-06 22:03:36,146 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 186 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:03:36,147 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 87 flow [2023-11-06 22:03:36,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-11-06 22:03:36,149 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -10 predicate places. [2023-11-06 22:03:36,149 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 87 flow [2023-11-06 22:03:36,150 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) [2023-11-06 22:03:36,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:36,150 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:36,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:03:36,151 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:36,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:36,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1818392647, now seen corresponding path program 1 times [2023-11-06 22:03:36,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:36,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224129550] [2023-11-06 22:03:36,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:36,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:36,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:36,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224129550] [2023-11-06 22:03:36,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224129550] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:36,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:36,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:03:36,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584161087] [2023-11-06 22:03:36,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:36,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:03:36,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:36,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:03:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:03:36,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 292 [2023-11-06 22:03:36,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:36,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:36,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 292 [2023-11-06 22:03:36,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:40,506 INFO L124 PetriNetUnfolderBase]: 24453/32857 cut-off events. [2023-11-06 22:03:40,506 INFO L125 PetriNetUnfolderBase]: For 2577/2577 co-relation queries the response was YES. [2023-11-06 22:03:40,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70160 conditions, 32857 events. 24453/32857 cut-off events. For 2577/2577 co-relation queries the response was YES. Maximal size of possible extension queue 1044. Compared 178542 event pairs, 2761 based on Foata normal form. 650/33507 useless extension candidates. Maximal degree in co-relation 70155. Up to 17315 conditions per place. [2023-11-06 22:03:40,948 INFO L140 encePairwiseOnDemand]: 282/292 looper letters, 66 selfloop transitions, 13 changer transitions 0/79 dead transitions. [2023-11-06 22:03:40,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 79 transitions, 360 flow [2023-11-06 22:03:40,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:03:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:03:40,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 577 transitions. [2023-11-06 22:03:40,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940068493150685 [2023-11-06 22:03:40,952 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 577 transitions. [2023-11-06 22:03:40,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 577 transitions. [2023-11-06 22:03:40,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:40,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 577 transitions. [2023-11-06 22:03:40,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.25) internal successors, (577), 4 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:40,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:40,960 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 292.0) internal successors, (1460), 5 states have internal predecessors, (1460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:40,960 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 87 flow. Second operand 4 states and 577 transitions. [2023-11-06 22:03:40,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 79 transitions, 360 flow [2023-11-06 22:03:40,962 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 79 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:03:40,964 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 192 flow [2023-11-06 22:03:40,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-06 22:03:40,966 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -5 predicate places. [2023-11-06 22:03:40,966 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 192 flow [2023-11-06 22:03:40,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:40,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:40,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:40,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:03:40,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:40,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1818390493, now seen corresponding path program 1 times [2023-11-06 22:03:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:40,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054308071] [2023-11-06 22:03:40,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:40,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:41,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:41,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054308071] [2023-11-06 22:03:41,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054308071] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:41,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:41,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:03:41,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487675745] [2023-11-06 22:03:41,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:41,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:03:41,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:41,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:03:41,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:03:42,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 292 [2023-11-06 22:03:42,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 192 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:42,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:42,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 292 [2023-11-06 22:03:42,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:46,253 INFO L124 PetriNetUnfolderBase]: 19608/27537 cut-off events. [2023-11-06 22:03:46,253 INFO L125 PetriNetUnfolderBase]: For 13963/14505 co-relation queries the response was YES. [2023-11-06 22:03:46,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68665 conditions, 27537 events. 19608/27537 cut-off events. For 13963/14505 co-relation queries the response was YES. Maximal size of possible extension queue 1079. Compared 163223 event pairs, 2837 based on Foata normal form. 1476/28761 useless extension candidates. Maximal degree in co-relation 68658. Up to 17553 conditions per place. [2023-11-06 22:03:46,449 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 69 selfloop transitions, 8 changer transitions 14/100 dead transitions. [2023-11-06 22:03:46,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 100 transitions, 554 flow [2023-11-06 22:03:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:03:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:03:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 899 transitions. [2023-11-06 22:03:46,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4398238747553816 [2023-11-06 22:03:46,454 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 899 transitions. [2023-11-06 22:03:46,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 899 transitions. [2023-11-06 22:03:46,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:46,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 899 transitions. [2023-11-06 22:03:46,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 128.42857142857142) internal successors, (899), 7 states have internal predecessors, (899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:46,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:46,466 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:46,467 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 192 flow. Second operand 7 states and 899 transitions. [2023-11-06 22:03:46,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 100 transitions, 554 flow [2023-11-06 22:03:46,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 554 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:03:46,480 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 233 flow [2023-11-06 22:03:46,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=233, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-06 22:03:46,484 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 3 predicate places. [2023-11-06 22:03:46,485 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 233 flow [2023-11-06 22:03:46,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:46,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:46,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:46,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:03:46,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:46,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:46,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1616198673, now seen corresponding path program 1 times [2023-11-06 22:03:46,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:46,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571016471] [2023-11-06 22:03:46,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:46,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:46,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:46,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:46,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:46,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571016471] [2023-11-06 22:03:46,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571016471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:46,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:46,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:03:46,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058943141] [2023-11-06 22:03:46,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:46,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:03:46,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:46,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:03:46,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:03:46,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-06 22:03:46,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 233 flow. Second operand has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:46,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:46,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-06 22:03:46,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:49,370 INFO L124 PetriNetUnfolderBase]: 12916/18845 cut-off events. [2023-11-06 22:03:49,371 INFO L125 PetriNetUnfolderBase]: For 15466/15817 co-relation queries the response was YES. [2023-11-06 22:03:49,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50373 conditions, 18845 events. 12916/18845 cut-off events. For 15466/15817 co-relation queries the response was YES. Maximal size of possible extension queue 796. Compared 117045 event pairs, 2262 based on Foata normal form. 1224/19879 useless extension candidates. Maximal degree in co-relation 50363. Up to 12890 conditions per place. [2023-11-06 22:03:49,523 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 97 selfloop transitions, 10 changer transitions 0/116 dead transitions. [2023-11-06 22:03:49,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 116 transitions, 744 flow [2023-11-06 22:03:49,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:03:49,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:03:49,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 708 transitions. [2023-11-06 22:03:49,529 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849315068493151 [2023-11-06 22:03:49,529 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 708 transitions. [2023-11-06 22:03:49,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 708 transitions. [2023-11-06 22:03:49,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:49,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 708 transitions. [2023-11-06 22:03:49,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:49,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:49,547 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 292.0) internal successors, (1752), 6 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:49,547 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 233 flow. Second operand 5 states and 708 transitions. [2023-11-06 22:03:49,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 116 transitions, 744 flow [2023-11-06 22:03:49,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 116 transitions, 724 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-06 22:03:49,680 INFO L231 Difference]: Finished difference. Result has 59 places, 55 transitions, 299 flow [2023-11-06 22:03:49,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=299, PETRI_PLACES=59, PETRI_TRANSITIONS=55} [2023-11-06 22:03:49,684 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 6 predicate places. [2023-11-06 22:03:49,688 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 55 transitions, 299 flow [2023-11-06 22:03:49,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:49,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:49,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:49,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:03:49,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:49,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:49,691 INFO L85 PathProgramCache]: Analyzing trace with hash 40304774, now seen corresponding path program 1 times [2023-11-06 22:03:49,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:49,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396675799] [2023-11-06 22:03:49,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:49,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:49,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:49,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:49,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:49,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396675799] [2023-11-06 22:03:49,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396675799] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:49,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:49,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:03:49,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762931167] [2023-11-06 22:03:49,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:49,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:03:49,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:49,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:03:49,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:03:49,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 292 [2023-11-06 22:03:49,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 55 transitions, 299 flow. Second operand has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:49,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:49,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 292 [2023-11-06 22:03:49,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:53,925 INFO L124 PetriNetUnfolderBase]: 20122/29292 cut-off events. [2023-11-06 22:03:53,925 INFO L125 PetriNetUnfolderBase]: For 37257/37545 co-relation queries the response was YES. [2023-11-06 22:03:54,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95509 conditions, 29292 events. 20122/29292 cut-off events. For 37257/37545 co-relation queries the response was YES. Maximal size of possible extension queue 1141. Compared 190123 event pairs, 8503 based on Foata normal form. 316/29402 useless extension candidates. Maximal degree in co-relation 95496. Up to 15264 conditions per place. [2023-11-06 22:03:54,147 INFO L140 encePairwiseOnDemand]: 289/292 looper letters, 71 selfloop transitions, 5 changer transitions 10/92 dead transitions. [2023-11-06 22:03:54,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 92 transitions, 667 flow [2023-11-06 22:03:54,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:03:54,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:03:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-11-06 22:03:54,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5125570776255708 [2023-11-06 22:03:54,150 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-11-06 22:03:54,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-11-06 22:03:54,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:54,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-11-06 22:03:54,152 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) [2023-11-06 22:03:54,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:54,155 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 292.0) internal successors, (1168), 4 states have internal predecessors, (1168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:54,155 INFO L175 Difference]: Start difference. First operand has 59 places, 55 transitions, 299 flow. Second operand 3 states and 449 transitions. [2023-11-06 22:03:54,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 92 transitions, 667 flow [2023-11-06 22:03:54,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 92 transitions, 658 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:03:54,460 INFO L231 Difference]: Finished difference. Result has 61 places, 52 transitions, 287 flow [2023-11-06 22:03:54,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=287, PETRI_PLACES=61, PETRI_TRANSITIONS=52} [2023-11-06 22:03:54,461 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 8 predicate places. [2023-11-06 22:03:54,462 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 52 transitions, 287 flow [2023-11-06 22:03:54,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:54,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:54,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:54,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:03:54,463 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:54,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:54,463 INFO L85 PathProgramCache]: Analyzing trace with hash -966934847, now seen corresponding path program 1 times [2023-11-06 22:03:54,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:54,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613120898] [2023-11-06 22:03:54,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:54,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:54,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:54,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:54,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613120898] [2023-11-06 22:03:54,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613120898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:54,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:54,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:03:54,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713812696] [2023-11-06 22:03:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:03:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:03:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:03:54,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-06 22:03:54,875 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 52 transitions, 287 flow. Second operand has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:54,875 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:54,875 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-06 22:03:54,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:03:57,779 INFO L124 PetriNetUnfolderBase]: 11898/18084 cut-off events. [2023-11-06 22:03:57,779 INFO L125 PetriNetUnfolderBase]: For 21537/21885 co-relation queries the response was YES. [2023-11-06 22:03:57,846 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58133 conditions, 18084 events. 11898/18084 cut-off events. For 21537/21885 co-relation queries the response was YES. Maximal size of possible extension queue 811. Compared 121803 event pairs, 1429 based on Foata normal form. 1160/19001 useless extension candidates. Maximal degree in co-relation 58119. Up to 5720 conditions per place. [2023-11-06 22:03:57,907 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 130 selfloop transitions, 18 changer transitions 3/160 dead transitions. [2023-11-06 22:03:57,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 160 transitions, 1129 flow [2023-11-06 22:03:57,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:03:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:03:57,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 992 transitions. [2023-11-06 22:03:57,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48532289628180036 [2023-11-06 22:03:57,913 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 992 transitions. [2023-11-06 22:03:57,913 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 992 transitions. [2023-11-06 22:03:57,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:03:57,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 992 transitions. [2023-11-06 22:03:57,917 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.71428571428572) internal successors, (992), 7 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:57,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:57,923 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:57,923 INFO L175 Difference]: Start difference. First operand has 61 places, 52 transitions, 287 flow. Second operand 7 states and 992 transitions. [2023-11-06 22:03:57,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 160 transitions, 1129 flow [2023-11-06 22:03:58,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 160 transitions, 1097 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-06 22:03:58,081 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 408 flow [2023-11-06 22:03:58,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-11-06 22:03:58,082 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 13 predicate places. [2023-11-06 22:03:58,082 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 408 flow [2023-11-06 22:03:58,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.2) internal successors, (646), 5 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:58,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:03:58,083 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:03:58,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:03:58,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:03:58,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:03:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1569830291, now seen corresponding path program 1 times [2023-11-06 22:03:58,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:03:58,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258966221] [2023-11-06 22:03:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:03:58,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:03:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:03:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:03:58,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:03:58,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258966221] [2023-11-06 22:03:58,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258966221] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:03:58,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:03:58,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:03:58,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79202985] [2023-11-06 22:03:58,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:03:58,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:03:58,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:03:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:03:58,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:03:58,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-06 22:03:58,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:03:58,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:03:58,478 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-06 22:03:58,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:00,929 INFO L124 PetriNetUnfolderBase]: 10338/15673 cut-off events. [2023-11-06 22:04:00,930 INFO L125 PetriNetUnfolderBase]: For 27313/27647 co-relation queries the response was YES. [2023-11-06 22:04:00,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58296 conditions, 15673 events. 10338/15673 cut-off events. For 27313/27647 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 104718 event pairs, 1097 based on Foata normal form. 463/15896 useless extension candidates. Maximal degree in co-relation 58280. Up to 5198 conditions per place. [2023-11-06 22:04:01,030 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 144 selfloop transitions, 27 changer transitions 19/199 dead transitions. [2023-11-06 22:04:01,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 199 transitions, 1487 flow [2023-11-06 22:04:01,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:04:01,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-06 22:04:01,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1275 transitions. [2023-11-06 22:04:01,037 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4851598173515982 [2023-11-06 22:04:01,037 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1275 transitions. [2023-11-06 22:04:01,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1275 transitions. [2023-11-06 22:04:01,039 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:01,039 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1275 transitions. [2023-11-06 22:04:01,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 141.66666666666666) internal successors, (1275), 9 states have internal predecessors, (1275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:01,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:01,050 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 292.0) internal successors, (2920), 10 states have internal predecessors, (2920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:01,050 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 408 flow. Second operand 9 states and 1275 transitions. [2023-11-06 22:04:01,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 199 transitions, 1487 flow [2023-11-06 22:04:02,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 199 transitions, 1428 flow, removed 18 selfloop flow, removed 4 redundant places. [2023-11-06 22:04:02,758 INFO L231 Difference]: Finished difference. Result has 73 places, 70 transitions, 530 flow [2023-11-06 22:04:02,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=354, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=530, PETRI_PLACES=73, PETRI_TRANSITIONS=70} [2023-11-06 22:04:02,759 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 20 predicate places. [2023-11-06 22:04:02,759 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 70 transitions, 530 flow [2023-11-06 22:04:02,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:02,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:02,760 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:02,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:04:02,761 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:04:02,761 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:02,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1376586635, now seen corresponding path program 1 times [2023-11-06 22:04:02,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:02,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941028289] [2023-11-06 22:04:02,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:02,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:04,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:04,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:04,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941028289] [2023-11-06 22:04:04,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941028289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:04,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:04,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:04,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221881273] [2023-11-06 22:04:04,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:04,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:04,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:04,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:04,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:04,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 292 [2023-11-06 22:04:04,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 70 transitions, 530 flow. Second operand has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:04,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:04,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 292 [2023-11-06 22:04:04,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:07,649 INFO L124 PetriNetUnfolderBase]: 14970/22828 cut-off events. [2023-11-06 22:04:07,649 INFO L125 PetriNetUnfolderBase]: For 57110/57346 co-relation queries the response was YES. [2023-11-06 22:04:07,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86379 conditions, 22828 events. 14970/22828 cut-off events. For 57110/57346 co-relation queries the response was YES. Maximal size of possible extension queue 1184. Compared 160491 event pairs, 1839 based on Foata normal form. 119/22533 useless extension candidates. Maximal degree in co-relation 86361. Up to 14712 conditions per place. [2023-11-06 22:04:07,847 INFO L140 encePairwiseOnDemand]: 284/292 looper letters, 188 selfloop transitions, 25 changer transitions 13/235 dead transitions. [2023-11-06 22:04:07,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 235 transitions, 2054 flow [2023-11-06 22:04:07,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 22:04:07,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-06 22:04:07,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1160 transitions. [2023-11-06 22:04:07,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4965753424657534 [2023-11-06 22:04:07,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1160 transitions. [2023-11-06 22:04:07,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1160 transitions. [2023-11-06 22:04:07,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:07,855 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1160 transitions. [2023-11-06 22:04:07,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:07,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:07,866 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 292.0) internal successors, (2628), 9 states have internal predecessors, (2628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:07,866 INFO L175 Difference]: Start difference. First operand has 73 places, 70 transitions, 530 flow. Second operand 8 states and 1160 transitions. [2023-11-06 22:04:07,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 235 transitions, 2054 flow [2023-11-06 22:04:11,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 235 transitions, 1801 flow, removed 72 selfloop flow, removed 4 redundant places. [2023-11-06 22:04:11,089 INFO L231 Difference]: Finished difference. Result has 78 places, 95 transitions, 578 flow [2023-11-06 22:04:11,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=435, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=578, PETRI_PLACES=78, PETRI_TRANSITIONS=95} [2023-11-06 22:04:11,090 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 25 predicate places. [2023-11-06 22:04:11,090 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 95 transitions, 578 flow [2023-11-06 22:04:11,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:11,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:11,091 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:11,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:04:11,092 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:04:11,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:11,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1761414771, now seen corresponding path program 2 times [2023-11-06 22:04:11,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:11,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686355416] [2023-11-06 22:04:11,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:11,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:11,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:12,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:12,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:12,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686355416] [2023-11-06 22:04:12,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686355416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:12,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:12,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:04:12,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958225931] [2023-11-06 22:04:12,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:12,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:12,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:12,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:12,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:12,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 292 [2023-11-06 22:04:12,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 95 transitions, 578 flow. Second operand has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:12,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:12,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 292 [2023-11-06 22:04:12,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:16,665 INFO L124 PetriNetUnfolderBase]: 17984/28617 cut-off events. [2023-11-06 22:04:16,665 INFO L125 PetriNetUnfolderBase]: For 56911/57564 co-relation queries the response was YES. [2023-11-06 22:04:16,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109163 conditions, 28617 events. 17984/28617 cut-off events. For 56911/57564 co-relation queries the response was YES. Maximal size of possible extension queue 1347. Compared 221479 event pairs, 3341 based on Foata normal form. 408/28849 useless extension candidates. Maximal degree in co-relation 109142. Up to 11801 conditions per place. [2023-11-06 22:04:16,855 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 244 selfloop transitions, 21 changer transitions 12/286 dead transitions. [2023-11-06 22:04:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 286 transitions, 2346 flow [2023-11-06 22:04:16,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:04:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:04:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1008 transitions. [2023-11-06 22:04:16,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931506849315068 [2023-11-06 22:04:16,862 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1008 transitions. [2023-11-06 22:04:16,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1008 transitions. [2023-11-06 22:04:16,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:16,864 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1008 transitions. [2023-11-06 22:04:16,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 144.0) internal successors, (1008), 7 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:16,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:16,872 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 292.0) internal successors, (2336), 8 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:16,872 INFO L175 Difference]: Start difference. First operand has 78 places, 95 transitions, 578 flow. Second operand 7 states and 1008 transitions. [2023-11-06 22:04:16,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 286 transitions, 2346 flow [2023-11-06 22:04:20,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 286 transitions, 2346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:04:20,303 INFO L231 Difference]: Finished difference. Result has 88 places, 110 transitions, 787 flow [2023-11-06 22:04:20,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=578, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=787, PETRI_PLACES=88, PETRI_TRANSITIONS=110} [2023-11-06 22:04:20,304 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 35 predicate places. [2023-11-06 22:04:20,304 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 110 transitions, 787 flow [2023-11-06 22:04:20,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 133.14285714285714) internal successors, (932), 7 states have internal predecessors, (932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:20,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:04:20,306 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:04:20,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:20,306 INFO L85 PathProgramCache]: Analyzing trace with hash 157619319, now seen corresponding path program 3 times [2023-11-06 22:04:20,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:20,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267688319] [2023-11-06 22:04:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:20,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:20,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:20,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267688319] [2023-11-06 22:04:20,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267688319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:20,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:20,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:04:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377383132] [2023-11-06 22:04:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:20,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:04:20,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:04:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:04:20,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 292 [2023-11-06 22:04:20,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 110 transitions, 787 flow. Second operand has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:20,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:20,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 292 [2023-11-06 22:04:20,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:04:25,257 INFO L124 PetriNetUnfolderBase]: 17591/27519 cut-off events. [2023-11-06 22:04:25,258 INFO L125 PetriNetUnfolderBase]: For 73826/74404 co-relation queries the response was YES. [2023-11-06 22:04:25,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112995 conditions, 27519 events. 17591/27519 cut-off events. For 73826/74404 co-relation queries the response was YES. Maximal size of possible extension queue 1373. Compared 211896 event pairs, 904 based on Foata normal form. 427/27600 useless extension candidates. Maximal degree in co-relation 112969. Up to 7145 conditions per place. [2023-11-06 22:04:25,501 INFO L140 encePairwiseOnDemand]: 285/292 looper letters, 286 selfloop transitions, 30 changer transitions 48/373 dead transitions. [2023-11-06 22:04:25,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 373 transitions, 3285 flow [2023-11-06 22:04:25,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:04:25,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-06 22:04:25,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1526 transitions. [2023-11-06 22:04:25,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.475093399750934 [2023-11-06 22:04:25,509 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1526 transitions. [2023-11-06 22:04:25,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1526 transitions. [2023-11-06 22:04:25,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:04:25,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1526 transitions. [2023-11-06 22:04:25,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 138.72727272727272) internal successors, (1526), 11 states have internal predecessors, (1526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:25,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:25,525 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 292.0) internal successors, (3504), 12 states have internal predecessors, (3504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:25,525 INFO L175 Difference]: Start difference. First operand has 88 places, 110 transitions, 787 flow. Second operand 11 states and 1526 transitions. [2023-11-06 22:04:25,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 373 transitions, 3285 flow [2023-11-06 22:04:30,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 373 transitions, 3205 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-06 22:04:30,302 INFO L231 Difference]: Finished difference. Result has 98 places, 108 transitions, 838 flow [2023-11-06 22:04:30,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=292, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=838, PETRI_PLACES=98, PETRI_TRANSITIONS=108} [2023-11-06 22:04:30,304 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, 45 predicate places. [2023-11-06 22:04:30,304 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 108 transitions, 838 flow [2023-11-06 22:04:30,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.14285714285714) internal successors, (904), 7 states have internal predecessors, (904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:30,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:04:30,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:04:30,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:04:30,305 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [P0Err0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2023-11-06 22:04:30,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:04:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 968209589, now seen corresponding path program 1 times [2023-11-06 22:04:30,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:04:30,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625129196] [2023-11-06 22:04:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:04:30,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:04:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:04:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:04:31,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:04:31,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625129196] [2023-11-06 22:04:31,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625129196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:04:31,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:04:31,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:04:31,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958042573] [2023-11-06 22:04:31,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:04:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:04:31,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:04:31,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:04:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:04:31,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 292 [2023-11-06 22:04:31,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 108 transitions, 838 flow. Second operand has 8 states, 8 states have (on average 123.5) internal successors, (988), 8 states have internal predecessors, (988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:04:31,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:04:31,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 292 [2023-11-06 22:04:31,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand