./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c --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_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/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_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/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_897ea232-4647-4557-b8ac-29c4a3178a3a/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 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:36:40,327 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:36:40,419 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-06 22:36:40,425 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:36:40,426 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:36:40,462 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:36:40,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:36:40,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:36:40,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:36:40,470 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:36:40,471 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:36:40,473 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:36:40,473 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:36:40,476 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:36:40,477 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:36:40,478 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:36:40,479 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:36:40,486 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:36:40,486 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-06 22:36:40,487 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-06 22:36:40,487 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-06 22:36:40,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:36:40,489 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-06 22:36:40,489 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:36:40,490 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:36:40,490 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:36:40,491 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:36:40,492 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:36:40,492 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:36:40,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:40,494 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:36:40,495 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:36:40,496 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:36:40,496 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:36:40,496 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:36:40,496 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:36:40,497 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:36:40,497 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:36:40,497 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_897ea232-4647-4557-b8ac-29c4a3178a3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ed4cbcf73a390a7811d007883e420d1e9d8d4b9f5e59201847b4262dc4b0025 [2023-11-06 22:36:40,812 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:36:40,836 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:36:40,843 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:36:40,846 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:36:40,847 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:36:40,848 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2023-11-06 22:36:44,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:36:44,377 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:36:44,379 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/sv-benchmarks/c/weaver/parallel-misc-4.wvr.c [2023-11-06 22:36:44,389 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/data/e369d40c8/314f290556ad45908ac42c1f2b2913fb/FLAG4e470acf1 [2023-11-06 22:36:44,405 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/data/e369d40c8/314f290556ad45908ac42c1f2b2913fb [2023-11-06 22:36:44,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:36:44,410 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:36:44,417 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:44,418 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:36:44,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:36:44,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,429 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e721c30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44, skipping insertion in model container [2023-11-06 22:36:44,429 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,467 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:36:44,657 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:44,669 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:36:44,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:36:44,707 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:36:44,707 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 22:36:44,716 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:36:44,716 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44 WrapperNode [2023-11-06 22:36:44,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:36:44,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:44,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:36:44,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:36:44,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,733 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,757 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 76 [2023-11-06 22:36:44,762 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:36:44,763 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:36:44,763 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:36:44,763 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:36:44,772 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,772 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,777 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,777 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,785 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,789 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,791 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,793 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,796 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:36:44,797 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:36:44,797 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:36:44,797 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:36:44,798 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (1/1) ... [2023-11-06 22:36:44,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:36:44,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:44,847 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:36:44,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:36:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:36:44,901 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-06 22:36:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-06 22:36:44,902 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-06 22:36:44,902 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-06 22:36:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-06 22:36:44,903 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-06 22:36:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:36:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:36:44,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:36:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-06 22:36:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-06 22:36:44,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:36:44,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:36:44,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:36:44,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:36:44,909 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 22:36:45,078 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:36:45,083 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:36:45,448 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:36:45,477 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:36:45,478 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:36:45,481 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:45 BoogieIcfgContainer [2023-11-06 22:36:45,481 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:36:45,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:36:45,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:36:45,489 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:36:45,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:44" (1/3) ... [2023-11-06 22:36:45,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9c097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:45, skipping insertion in model container [2023-11-06 22:36:45,490 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:44" (2/3) ... [2023-11-06 22:36:45,490 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ca9c097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:45, skipping insertion in model container [2023-11-06 22:36:45,491 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:45" (3/3) ... [2023-11-06 22:36:45,492 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2023-11-06 22:36:45,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:36:45,517 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-11-06 22:36:45,517 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:36:45,654 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:36:45,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 124 transitions, 269 flow [2023-11-06 22:36:45,782 INFO L124 PetriNetUnfolderBase]: 7/121 cut-off events. [2023-11-06 22:36:45,782 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:45,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 7/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 112 event pairs, 0 based on Foata normal form. 0/100 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-06 22:36:45,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 124 transitions, 269 flow [2023-11-06 22:36:45,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 116 transitions, 250 flow [2023-11-06 22:36:45,802 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:36:45,815 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 116 transitions, 250 flow [2023-11-06 22:36:45,817 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 116 transitions, 250 flow [2023-11-06 22:36:45,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 250 flow [2023-11-06 22:36:45,864 INFO L124 PetriNetUnfolderBase]: 7/116 cut-off events. [2023-11-06 22:36:45,865 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:45,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 7/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/96 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2023-11-06 22:36:45,869 INFO L119 LiptonReduction]: Number of co-enabled transitions 1458 [2023-11-06 22:36:50,759 INFO L134 LiptonReduction]: Checked pairs total: 2085 [2023-11-06 22:36:50,760 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-06 22:36:50,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:36:50,807 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;@1c2419dc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:36:50,807 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:36:50,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:36:50,812 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-06 22:36:50,812 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:50,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:50,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-06 22:36:50,814 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:50,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:50,823 INFO L85 PathProgramCache]: Analyzing trace with hash 457, now seen corresponding path program 1 times [2023-11-06 22:36:50,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:50,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725221838] [2023-11-06 22:36:50,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:50,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:50,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:50,961 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 22:36:50,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:50,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725221838] [2023-11-06 22:36:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725221838] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:50,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:50,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-06 22:36:50,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438690864] [2023-11-06 22:36:50,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:50,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:36:50,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:51,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:36:51,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:36:51,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 232 [2023-11-06 22:36:51,026 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 35 transitions, 88 flow. Second operand has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:36:51,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:51,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 232 [2023-11-06 22:36:51,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:51,260 INFO L124 PetriNetUnfolderBase]: 352/550 cut-off events. [2023-11-06 22:36:51,260 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-06 22:36:51,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 550 events. 352/550 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2404 event pairs, 270 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 989. Up to 544 conditions per place. [2023-11-06 22:36:51,271 INFO L140 encePairwiseOnDemand]: 229/232 looper letters, 29 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2023-11-06 22:36:51,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 32 transitions, 140 flow [2023-11-06 22:36:51,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:36:51,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-06 22:36:51,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 256 transitions. [2023-11-06 22:36:51,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517241379310345 [2023-11-06 22:36:51,290 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 256 transitions. [2023-11-06 22:36:51,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 256 transitions. [2023-11-06 22:36:51,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:51,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 256 transitions. [2023-11-06 22:36:51,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 128.0) internal successors, (256), 2 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 22:36:51,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 22:36:51,307 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 232.0) internal successors, (696), 3 states have internal predecessors, (696), 0 states have call successors, (0), 0 states 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 22:36:51,310 INFO L175 Difference]: Start difference. First operand has 43 places, 35 transitions, 88 flow. Second operand 2 states and 256 transitions. [2023-11-06 22:36:51,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 32 transitions, 140 flow [2023-11-06 22:36:51,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 128 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-06 22:36:51,319 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 70 flow [2023-11-06 22:36:51,321 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=34, 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=70, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-11-06 22:36:51,326 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-11-06 22:36:51,327 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 70 flow [2023-11-06 22:36:51,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 112.5) internal successors, (225), 2 states have internal predecessors, (225), 0 states have call successors, (0), 0 states 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 22:36:51,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:51,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:36:51,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:36:51,328 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:51,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:51,329 INFO L85 PathProgramCache]: Analyzing trace with hash 447368, now seen corresponding path program 1 times [2023-11-06 22:36:51,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:51,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575671014] [2023-11-06 22:36:51,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:51,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:51,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:51,629 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 22:36:51,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:51,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575671014] [2023-11-06 22:36:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575671014] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:51,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:51,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:36:51,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082617248] [2023-11-06 22:36:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:51,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:51,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:51,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:51,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:51,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2023-11-06 22:36:51,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 22:36:51,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:51,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2023-11-06 22:36:51,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:51,841 INFO L124 PetriNetUnfolderBase]: 341/529 cut-off events. [2023-11-06 22:36:51,841 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:51,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 529 events. 341/529 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2266 event pairs, 261 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 1068. Up to 522 conditions per place. [2023-11-06 22:36:51,849 INFO L140 encePairwiseOnDemand]: 229/232 looper letters, 26 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-11-06 22:36:51,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 30 transitions, 120 flow [2023-11-06 22:36:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:51,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:51,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2023-11-06 22:36:51,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47701149425287354 [2023-11-06 22:36:51,858 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2023-11-06 22:36:51,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2023-11-06 22:36:51,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:51,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2023-11-06 22:36:51,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states 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 22:36:51,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:51,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:51,866 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 70 flow. Second operand 3 states and 332 transitions. [2023-11-06 22:36:51,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 30 transitions, 120 flow [2023-11-06 22:36:51,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:36:51,868 INFO L231 Difference]: Finished difference. Result has 35 places, 30 transitions, 68 flow [2023-11-06 22:36:51,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=35, PETRI_TRANSITIONS=30} [2023-11-06 22:36:51,870 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-11-06 22:36:51,870 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 30 transitions, 68 flow [2023-11-06 22:36:51,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states 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 22:36:51,871 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:51,871 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-06 22:36:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:36:51,872 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:51,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash 447369, now seen corresponding path program 1 times [2023-11-06 22:36:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:51,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990668926] [2023-11-06 22:36:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:51,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:52,109 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 22:36:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990668926] [2023-11-06 22:36:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990668926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:52,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:52,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:36:52,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070828933] [2023-11-06 22:36:52,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:52,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:52,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:52,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:52,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:52,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:52,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 68 flow. Second operand has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 22:36:52,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:52,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:52,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:52,287 INFO L124 PetriNetUnfolderBase]: 330/508 cut-off events. [2023-11-06 22:36:52,287 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:52,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1031 conditions, 508 events. 330/508 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2167 event pairs, 252 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 1027. Up to 501 conditions per place. [2023-11-06 22:36:52,293 INFO L140 encePairwiseOnDemand]: 229/232 looper letters, 24 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-11-06 22:36:52,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 28 transitions, 114 flow [2023-11-06 22:36:52,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:52,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:52,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-11-06 22:36:52,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4956896551724138 [2023-11-06 22:36:52,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-11-06 22:36:52,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-11-06 22:36:52,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:52,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-11-06 22:36:52,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 22:36:52,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,302 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,303 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 68 flow. Second operand 3 states and 345 transitions. [2023-11-06 22:36:52,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 28 transitions, 114 flow [2023-11-06 22:36:52,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 113 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:52,305 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 65 flow [2023-11-06 22:36:52,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-06 22:36:52,306 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -9 predicate places. [2023-11-06 22:36:52,306 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 65 flow [2023-11-06 22:36:52,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states 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 22:36:52,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:52,307 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:36:52,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:36:52,308 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:52,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:52,309 INFO L85 PathProgramCache]: Analyzing trace with hash 429932620, now seen corresponding path program 1 times [2023-11-06 22:36:52,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:52,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791249638] [2023-11-06 22:36:52,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:52,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:52,399 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 22:36:52,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:52,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791249638] [2023-11-06 22:36:52,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791249638] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:52,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:52,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:36:52,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930739990] [2023-11-06 22:36:52,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:52,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:52,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:52,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:52,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:52,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:52,458 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 22:36:52,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:52,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:52,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:52,573 INFO L124 PetriNetUnfolderBase]: 306/470 cut-off events. [2023-11-06 22:36:52,574 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:52,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 470 events. 306/470 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1964 event pairs, 234 based on Foata normal form. 0/290 useless extension candidates. Maximal degree in co-relation 952. Up to 463 conditions per place. [2023-11-06 22:36:52,579 INFO L140 encePairwiseOnDemand]: 229/232 looper letters, 22 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-11-06 22:36:52,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 26 transitions, 107 flow [2023-11-06 22:36:52,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 343 transitions. [2023-11-06 22:36:52,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.492816091954023 [2023-11-06 22:36:52,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 343 transitions. [2023-11-06 22:36:52,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 343 transitions. [2023-11-06 22:36:52,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:52,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 343 transitions. [2023-11-06 22:36:52,586 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states 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 22:36:52,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,590 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,590 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 343 transitions. [2023-11-06 22:36:52,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 26 transitions, 107 flow [2023-11-06 22:36:52,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:52,592 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 62 flow [2023-11-06 22:36:52,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-11-06 22:36:52,594 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -10 predicate places. [2023-11-06 22:36:52,594 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 62 flow [2023-11-06 22:36:52,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states 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 22:36:52,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:52,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:36:52,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:36:52,596 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:52,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:52,597 INFO L85 PathProgramCache]: Analyzing trace with hash 429932619, now seen corresponding path program 1 times [2023-11-06 22:36:52,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:52,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968615699] [2023-11-06 22:36:52,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:52,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:52,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:52,651 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 22:36:52,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:52,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968615699] [2023-11-06 22:36:52,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968615699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:52,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:52,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:36:52,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246380461] [2023-11-06 22:36:52,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:52,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:52,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:52,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:52,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:52,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 232 [2023-11-06 22:36:52,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:36:52,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:52,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 232 [2023-11-06 22:36:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:52,824 INFO L124 PetriNetUnfolderBase]: 282/432 cut-off events. [2023-11-06 22:36:52,825 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:52,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 432 events. 282/432 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 1758 event pairs, 216 based on Foata normal form. 0/276 useless extension candidates. Maximal degree in co-relation 877. Up to 425 conditions per place. [2023-11-06 22:36:52,829 INFO L140 encePairwiseOnDemand]: 229/232 looper letters, 20 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-06 22:36:52,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 100 flow [2023-11-06 22:36:52,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 326 transitions. [2023-11-06 22:36:52,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46839080459770116 [2023-11-06 22:36:52,832 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 326 transitions. [2023-11-06 22:36:52,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 326 transitions. [2023-11-06 22:36:52,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:52,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 326 transitions. [2023-11-06 22:36:52,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 108.66666666666667) internal successors, (326), 3 states have internal predecessors, (326), 0 states have call successors, (0), 0 states 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 22:36:52,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:52,838 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 62 flow. Second operand 3 states and 326 transitions. [2023-11-06 22:36:52,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 100 flow [2023-11-06 22:36:52,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:52,839 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 59 flow [2023-11-06 22:36:52,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-06 22:36:52,840 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-11-06 22:36:52,841 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 59 flow [2023-11-06 22:36:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states 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 22:36:52,841 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:52,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:52,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:36:52,842 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:52,842 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash 848395642, now seen corresponding path program 1 times [2023-11-06 22:36:52,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:52,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757680056] [2023-11-06 22:36:52,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:52,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:53,023 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 22:36:53,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:53,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757680056] [2023-11-06 22:36:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757680056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:53,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:53,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:36:53,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805161150] [2023-11-06 22:36:53,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:53,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:36:53,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:53,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:36:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:36:53,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:53,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:36:53,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:53,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:53,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:53,176 INFO L124 PetriNetUnfolderBase]: 224/350 cut-off events. [2023-11-06 22:36:53,176 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:53,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 350 events. 224/350 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1355 event pairs, 170 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 714. Up to 343 conditions per place. [2023-11-06 22:36:53,180 INFO L140 encePairwiseOnDemand]: 230/232 looper letters, 19 selfloop transitions, 1 changer transitions 0/23 dead transitions. [2023-11-06 22:36:53,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 23 transitions, 97 flow [2023-11-06 22:36:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:53,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:53,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-11-06 22:36:53,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4870689655172414 [2023-11-06 22:36:53,183 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-11-06 22:36:53,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-11-06 22:36:53,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:53,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-11-06 22:36:53,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 22:36:53,188 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:53,189 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:53,189 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 59 flow. Second operand 3 states and 339 transitions. [2023-11-06 22:36:53,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 23 transitions, 97 flow [2023-11-06 22:36:53,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 23 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:53,192 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 58 flow [2023-11-06 22:36:53,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-11-06 22:36:53,195 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-11-06 22:36:53,199 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 58 flow [2023-11-06 22:36:53,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.33333333333333) internal successors, (325), 3 states have internal predecessors, (325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:36:53,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:53,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:53,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:36:53,201 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:53,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:53,201 INFO L85 PathProgramCache]: Analyzing trace with hash 848395641, now seen corresponding path program 1 times [2023-11-06 22:36:53,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:53,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582819447] [2023-11-06 22:36:53,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:53,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:53,353 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 22:36:53,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:53,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582819447] [2023-11-06 22:36:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582819447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:36:53,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702150180] [2023-11-06 22:36:53,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:53,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:53,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:53,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:53,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:53,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 232 [2023-11-06 22:36:53,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 22:36:53,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:53,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 232 [2023-11-06 22:36:53,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:53,585 INFO L124 PetriNetUnfolderBase]: 166/268 cut-off events. [2023-11-06 22:36:53,585 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-06 22:36:53,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 555 conditions, 268 events. 166/268 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 982 event pairs, 124 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 551. Up to 261 conditions per place. [2023-11-06 22:36:53,588 INFO L140 encePairwiseOnDemand]: 230/232 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-11-06 22:36:53,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 22 transitions, 94 flow [2023-11-06 22:36:53,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:36:53,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:36:53,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 299 transitions. [2023-11-06 22:36:53,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295977011494253 [2023-11-06 22:36:53,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 299 transitions. [2023-11-06 22:36:53,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 299 transitions. [2023-11-06 22:36:53,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:53,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 299 transitions. [2023-11-06 22:36:53,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 22:36:53,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:53,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 232.0) internal successors, (928), 4 states have internal predecessors, (928), 0 states have call successors, (0), 0 states 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 22:36:53,596 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 58 flow. Second operand 3 states and 299 transitions. [2023-11-06 22:36:53,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 22 transitions, 94 flow [2023-11-06 22:36:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 22 transitions, 93 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:53,598 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 57 flow [2023-11-06 22:36:53,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-11-06 22:36:53,599 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -11 predicate places. [2023-11-06 22:36:53,599 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 57 flow [2023-11-06 22:36:53,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.4) internal successors, (472), 5 states have internal predecessors, (472), 0 states have call successors, (0), 0 states 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 22:36:53,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:53,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:53,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:36:53,601 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:53,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash 769752007, now seen corresponding path program 1 times [2023-11-06 22:36:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580509059] [2023-11-06 22:36:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:53,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:53,810 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 22:36:53,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:53,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580509059] [2023-11-06 22:36:53,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580509059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:53,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:36:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857125806] [2023-11-06 22:36:53,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:53,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:36:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:53,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:36:53,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:36:53,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:53,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 22 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:36:53,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:53,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:53,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:53,966 INFO L124 PetriNetUnfolderBase]: 109/187 cut-off events. [2023-11-06 22:36:53,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:36:53,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395 conditions, 187 events. 109/187 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 705 event pairs, 6 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 391. Up to 85 conditions per place. [2023-11-06 22:36:53,969 INFO L140 encePairwiseOnDemand]: 228/232 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-11-06 22:36:53,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-11-06 22:36:53,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:36:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:36:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 459 transitions. [2023-11-06 22:36:53,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49461206896551724 [2023-11-06 22:36:53,972 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 459 transitions. [2023-11-06 22:36:53,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 459 transitions. [2023-11-06 22:36:53,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:53,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 459 transitions. [2023-11-06 22:36:53,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.75) internal successors, (459), 4 states have internal predecessors, (459), 0 states have call successors, (0), 0 states 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 22:36:53,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 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 22:36:53,978 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 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 22:36:53,978 INFO L175 Difference]: Start difference. First operand has 32 places, 22 transitions, 57 flow. Second operand 4 states and 459 transitions. [2023-11-06 22:36:53,979 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-11-06 22:36:53,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:36:53,981 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 74 flow [2023-11-06 22:36:53,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-06 22:36:53,982 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -8 predicate places. [2023-11-06 22:36:53,982 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 74 flow [2023-11-06 22:36:53,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:36:53,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:53,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:53,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:36:53,983 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:53,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash 945534267, now seen corresponding path program 2 times [2023-11-06 22:36:53,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:53,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413687416] [2023-11-06 22:36:53,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:53,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:54,119 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 22:36:54,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:54,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413687416] [2023-11-06 22:36:54,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413687416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:54,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:54,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:36:54,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207825014] [2023-11-06 22:36:54,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:54,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:36:54,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:54,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:36:54,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:36:54,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:54,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:36:54,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:54,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:54,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:54,270 INFO L124 PetriNetUnfolderBase]: 147/234 cut-off events. [2023-11-06 22:36:54,270 INFO L125 PetriNetUnfolderBase]: For 24/37 co-relation queries the response was YES. [2023-11-06 22:36:54,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 234 events. 147/234 cut-off events. For 24/37 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 658 event pairs, 13 based on Foata normal form. 13/237 useless extension candidates. Maximal degree in co-relation 521. Up to 117 conditions per place. [2023-11-06 22:36:54,273 INFO L140 encePairwiseOnDemand]: 228/232 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2023-11-06 22:36:54,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 37 transitions, 175 flow [2023-11-06 22:36:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:36:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-06 22:36:54,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-11-06 22:36:54,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49353448275862066 [2023-11-06 22:36:54,276 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-11-06 22:36:54,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-11-06 22:36:54,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:54,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-11-06 22:36:54,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 0 states 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 22:36:54,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 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 22:36:54,281 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 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 22:36:54,281 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 74 flow. Second operand 4 states and 458 transitions. [2023-11-06 22:36:54,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 37 transitions, 175 flow [2023-11-06 22:36:54,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:54,284 INFO L231 Difference]: Finished difference. Result has 39 places, 27 transitions, 102 flow [2023-11-06 22:36:54,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=71, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=102, PETRI_PLACES=39, PETRI_TRANSITIONS=27} [2023-11-06 22:36:54,285 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -4 predicate places. [2023-11-06 22:36:54,285 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 27 transitions, 102 flow [2023-11-06 22:36:54,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 22:36:54,285 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:54,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:54,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:36:54,286 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:54,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 831490401, now seen corresponding path program 3 times [2023-11-06 22:36:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:54,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165489898] [2023-11-06 22:36:54,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:54,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:54,476 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 22:36:54,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:54,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165489898] [2023-11-06 22:36:54,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165489898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:54,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:54,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:36:54,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288826282] [2023-11-06 22:36:54,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:54,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:54,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:54,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:54,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:54,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 232 [2023-11-06 22:36:54,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 27 transitions, 102 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 22:36:54,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:54,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 232 [2023-11-06 22:36:54,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:54,672 INFO L124 PetriNetUnfolderBase]: 122/214 cut-off events. [2023-11-06 22:36:54,672 INFO L125 PetriNetUnfolderBase]: For 81/90 co-relation queries the response was YES. [2023-11-06 22:36:54,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534 conditions, 214 events. 122/214 cut-off events. For 81/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 652 event pairs, 13 based on Foata normal form. 17/230 useless extension candidates. Maximal degree in co-relation 526. Up to 71 conditions per place. [2023-11-06 22:36:54,674 INFO L140 encePairwiseOnDemand]: 226/232 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-11-06 22:36:54,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 210 flow [2023-11-06 22:36:54,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:36:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:36:54,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-06 22:36:54,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4844827586206897 [2023-11-06 22:36:54,679 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-06 22:36:54,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-06 22:36:54,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:54,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-06 22:36:54,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states 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 22:36:54,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 22:36:54,686 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 22:36:54,686 INFO L175 Difference]: Start difference. First operand has 39 places, 27 transitions, 102 flow. Second operand 5 states and 562 transitions. [2023-11-06 22:36:54,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 210 flow [2023-11-06 22:36:54,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 205 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:36:54,690 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 132 flow [2023-11-06 22:36:54,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-11-06 22:36:54,692 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 1 predicate places. [2023-11-06 22:36:54,692 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 132 flow [2023-11-06 22:36:54,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states 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 22:36:54,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:54,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:54,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:36:54,694 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:54,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:54,694 INFO L85 PathProgramCache]: Analyzing trace with hash -432707059, now seen corresponding path program 4 times [2023-11-06 22:36:54,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:54,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209099611] [2023-11-06 22:36:54,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:54,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:55,009 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 22:36:55,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:55,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209099611] [2023-11-06 22:36:55,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209099611] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:55,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:36:55,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:36:55,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527851557] [2023-11-06 22:36:55,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:55,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:36:55,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:55,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:36:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:36:55,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 232 [2023-11-06 22:36:55,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 29 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 22:36:55,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:55,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 232 [2023-11-06 22:36:55,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:55,246 INFO L124 PetriNetUnfolderBase]: 213/366 cut-off events. [2023-11-06 22:36:55,246 INFO L125 PetriNetUnfolderBase]: For 374/385 co-relation queries the response was YES. [2023-11-06 22:36:55,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 366 events. 213/366 cut-off events. For 374/385 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1335 event pairs, 13 based on Foata normal form. 25/389 useless extension candidates. Maximal degree in co-relation 1012. Up to 202 conditions per place. [2023-11-06 22:36:55,250 INFO L140 encePairwiseOnDemand]: 225/232 looper letters, 30 selfloop transitions, 3 changer transitions 24/60 dead transitions. [2023-11-06 22:36:55,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 368 flow [2023-11-06 22:36:55,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:36:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-06 22:36:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 765 transitions. [2023-11-06 22:36:55,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4710591133004926 [2023-11-06 22:36:55,254 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 765 transitions. [2023-11-06 22:36:55,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 765 transitions. [2023-11-06 22:36:55,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:55,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 765 transitions. [2023-11-06 22:36:55,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.28571428571429) internal successors, (765), 7 states have internal predecessors, (765), 0 states have call successors, (0), 0 states 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 22:36:55,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states 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 22:36:55,266 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 232.0) internal successors, (1856), 8 states have internal predecessors, (1856), 0 states have call successors, (0), 0 states 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 22:36:55,266 INFO L175 Difference]: Start difference. First operand has 44 places, 29 transitions, 132 flow. Second operand 7 states and 765 transitions. [2023-11-06 22:36:55,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 368 flow [2023-11-06 22:36:55,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:36:55,274 INFO L231 Difference]: Finished difference. Result has 53 places, 30 transitions, 161 flow [2023-11-06 22:36:55,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=161, PETRI_PLACES=53, PETRI_TRANSITIONS=30} [2023-11-06 22:36:55,274 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 10 predicate places. [2023-11-06 22:36:55,275 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 30 transitions, 161 flow [2023-11-06 22:36:55,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 105.4) internal successors, (527), 5 states have internal predecessors, (527), 0 states have call successors, (0), 0 states 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 22:36:55,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:55,275 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 22:36:55,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:36:55,276 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:55,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:55,276 INFO L85 PathProgramCache]: Analyzing trace with hash -99425899, now seen corresponding path program 1 times [2023-11-06 22:36:55,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:55,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239804252] [2023-11-06 22:36:55,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:55,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:55,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239804252] [2023-11-06 22:36:55,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239804252] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:55,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803887267] [2023-11-06 22:36:55,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:55,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:55,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:55,597 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:55,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:36:55,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:55,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:36:55,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:55,843 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:36:55,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803887267] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:36:55,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:36:55,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-06 22:36:55,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330390864] [2023-11-06 22:36:55,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:36:55,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:36:55,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:55,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:36:55,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:36:55,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 232 [2023-11-06 22:36:55,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 30 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 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 22:36:55,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:55,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 232 [2023-11-06 22:36:55,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:56,045 INFO L124 PetriNetUnfolderBase]: 199/321 cut-off events. [2023-11-06 22:36:56,045 INFO L125 PetriNetUnfolderBase]: For 926/945 co-relation queries the response was YES. [2023-11-06 22:36:56,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1216 conditions, 321 events. 199/321 cut-off events. For 926/945 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 977 event pairs, 28 based on Foata normal form. 31/352 useless extension candidates. Maximal degree in co-relation 1201. Up to 134 conditions per place. [2023-11-06 22:36:56,049 INFO L140 encePairwiseOnDemand]: 227/232 looper letters, 41 selfloop transitions, 6 changer transitions 0/49 dead transitions. [2023-11-06 22:36:56,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 352 flow [2023-11-06 22:36:56,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:36:56,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-06 22:36:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 572 transitions. [2023-11-06 22:36:56,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49310344827586206 [2023-11-06 22:36:56,053 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 572 transitions. [2023-11-06 22:36:56,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 572 transitions. [2023-11-06 22:36:56,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:56,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 572 transitions. [2023-11-06 22:36:56,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.4) internal successors, (572), 5 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:36:56,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 22:36:56,059 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 232.0) internal successors, (1392), 6 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states 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 22:36:56,059 INFO L175 Difference]: Start difference. First operand has 53 places, 30 transitions, 161 flow. Second operand 5 states and 572 transitions. [2023-11-06 22:36:56,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 352 flow [2023-11-06 22:36:56,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 49 transitions, 334 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-06 22:36:56,064 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 171 flow [2023-11-06 22:36:56,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2023-11-06 22:36:56,065 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 8 predicate places. [2023-11-06 22:36:56,066 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 171 flow [2023-11-06 22:36:56,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 110.75) internal successors, (443), 4 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 22:36:56,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:56,067 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 22:36:56,079 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-06 22:36:56,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 22:36:56,273 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:56,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:56,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1975231799, now seen corresponding path program 2 times [2023-11-06 22:36:56,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:56,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384679571] [2023-11-06 22:36:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:56,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:56,495 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:56,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384679571] [2023-11-06 22:36:56,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [384679571] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:56,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118958742] [2023-11-06 22:36:56,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:36:56,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:56,497 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:56,498 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:56,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:36:56,615 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:36:56,615 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:36:56,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:36:56,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:56,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:56,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:56,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:56,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118958742] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:56,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:56,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-06 22:36:56,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837085555] [2023-11-06 22:36:56,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:56,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 22:36:56,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:56,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 22:36:56,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-06 22:36:57,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-11-06 22:36:57,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 171 flow. Second operand has 13 states, 13 states have (on average 99.3076923076923) internal successors, (1291), 13 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 22:36:57,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:57,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-11-06 22:36:57,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:57,657 INFO L124 PetriNetUnfolderBase]: 323/559 cut-off events. [2023-11-06 22:36:57,657 INFO L125 PetriNetUnfolderBase]: For 1546/1579 co-relation queries the response was YES. [2023-11-06 22:36:57,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 559 events. 323/559 cut-off events. For 1546/1579 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2337 event pairs, 12 based on Foata normal form. 51/605 useless extension candidates. Maximal degree in co-relation 2157. Up to 209 conditions per place. [2023-11-06 22:36:57,663 INFO L140 encePairwiseOnDemand]: 225/232 looper letters, 50 selfloop transitions, 15 changer transitions 33/102 dead transitions. [2023-11-06 22:36:57,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 102 transitions, 734 flow [2023-11-06 22:36:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:36:57,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-06 22:36:57,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1538 transitions. [2023-11-06 22:36:57,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419540229885057 [2023-11-06 22:36:57,671 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1538 transitions. [2023-11-06 22:36:57,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1538 transitions. [2023-11-06 22:36:57,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:57,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1538 transitions. [2023-11-06 22:36:57,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 102.53333333333333) internal successors, (1538), 15 states have internal predecessors, (1538), 0 states have call successors, (0), 0 states 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 22:36:57,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 232.0) internal successors, (3712), 16 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states 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 22:36:57,687 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 232.0) internal successors, (3712), 16 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states 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 22:36:57,687 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 171 flow. Second operand 15 states and 1538 transitions. [2023-11-06 22:36:57,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 102 transitions, 734 flow [2023-11-06 22:36:57,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 102 transitions, 719 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-06 22:36:57,696 INFO L231 Difference]: Finished difference. Result has 69 places, 37 transitions, 266 flow [2023-11-06 22:36:57,697 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=266, PETRI_PLACES=69, PETRI_TRANSITIONS=37} [2023-11-06 22:36:57,698 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 26 predicate places. [2023-11-06 22:36:57,699 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 37 transitions, 266 flow [2023-11-06 22:36:57,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 99.3076923076923) internal successors, (1291), 13 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states 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 22:36:57,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:57,700 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 22:36:57,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:57,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:36:57,907 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:57,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1481219663, now seen corresponding path program 1 times [2023-11-06 22:36:57,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:57,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324265103] [2023-11-06 22:36:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:57,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:36:57,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:58,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:58,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:36:58,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324265103] [2023-11-06 22:36:58,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324265103] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:36:58,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [845719277] [2023-11-06 22:36:58,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:58,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:36:58,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:36:58,131 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:36:58,160 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:36:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:36:58,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 22:36:58,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:36:58,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:58,335 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:36:58,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:36:58,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [845719277] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:36:58,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:36:58,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-06 22:36:58,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341714476] [2023-11-06 22:36:58,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:36:58,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-06 22:36:58,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:36:58,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-06 22:36:58,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-06 22:36:58,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 232 [2023-11-06 22:36:58,670 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 37 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 99.58333333333333) internal successors, (1195), 12 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 22:36:58,670 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:36:58,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 232 [2023-11-06 22:36:58,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:36:59,673 INFO L124 PetriNetUnfolderBase]: 712/1186 cut-off events. [2023-11-06 22:36:59,674 INFO L125 PetriNetUnfolderBase]: For 10939/10948 co-relation queries the response was YES. [2023-11-06 22:36:59,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6380 conditions, 1186 events. 712/1186 cut-off events. For 10939/10948 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5154 event pairs, 20 based on Foata normal form. 53/1235 useless extension candidates. Maximal degree in co-relation 6359. Up to 379 conditions per place. [2023-11-06 22:36:59,689 INFO L140 encePairwiseOnDemand]: 225/232 looper letters, 102 selfloop transitions, 39 changer transitions 88/231 dead transitions. [2023-11-06 22:36:59,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 231 transitions, 2232 flow [2023-11-06 22:36:59,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:36:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-06 22:36:59,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2704 transitions. [2023-11-06 22:36:59,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482758620689655 [2023-11-06 22:36:59,703 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2704 transitions. [2023-11-06 22:36:59,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2704 transitions. [2023-11-06 22:36:59,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:36:59,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2704 transitions. [2023-11-06 22:36:59,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 104.0) internal successors, (2704), 26 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states 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 22:36:59,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 232.0) internal successors, (6264), 27 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 22:36:59,731 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 232.0) internal successors, (6264), 27 states have internal predecessors, (6264), 0 states have call successors, (0), 0 states 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 22:36:59,731 INFO L175 Difference]: Start difference. First operand has 69 places, 37 transitions, 266 flow. Second operand 26 states and 2704 transitions. [2023-11-06 22:36:59,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 231 transitions, 2232 flow [2023-11-06 22:36:59,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 231 transitions, 1785 flow, removed 182 selfloop flow, removed 10 redundant places. [2023-11-06 22:36:59,762 INFO L231 Difference]: Finished difference. Result has 86 places, 70 transitions, 655 flow [2023-11-06 22:36:59,762 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=655, PETRI_PLACES=86, PETRI_TRANSITIONS=70} [2023-11-06 22:36:59,763 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 43 predicate places. [2023-11-06 22:36:59,763 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 70 transitions, 655 flow [2023-11-06 22:36:59,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 99.58333333333333) internal successors, (1195), 12 states have internal predecessors, (1195), 0 states have call successors, (0), 0 states 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 22:36:59,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:36:59,764 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:36:59,776 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:36:59,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 22:36:59,971 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:36:59,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:36:59,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1910705903, now seen corresponding path program 3 times [2023-11-06 22:36:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:36:59,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822277716] [2023-11-06 22:36:59,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:36:59,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:00,588 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:00,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822277716] [2023-11-06 22:37:00,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822277716] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:00,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910322955] [2023-11-06 22:37:00,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:37:00,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:00,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:00,591 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:00,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:37:00,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-06 22:37:00,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:00,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:37:00,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:00,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:00,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:01,351 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:37:01,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910322955] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:01,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:01,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 22 [2023-11-06 22:37:01,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290111409] [2023-11-06 22:37:01,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:01,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-06 22:37:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:01,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-06 22:37:01,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:37:01,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 232 [2023-11-06 22:37:01,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 655 flow. Second operand has 23 states, 23 states have (on average 94.52173913043478) internal successors, (2174), 23 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states 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 22:37:01,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:01,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 232 [2023-11-06 22:37:01,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:03,565 INFO L124 PetriNetUnfolderBase]: 807/1322 cut-off events. [2023-11-06 22:37:03,565 INFO L125 PetriNetUnfolderBase]: For 8840/8840 co-relation queries the response was YES. [2023-11-06 22:37:03,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6757 conditions, 1322 events. 807/1322 cut-off events. For 8840/8840 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5590 event pairs, 8 based on Foata normal form. 76/1398 useless extension candidates. Maximal degree in co-relation 6733. Up to 391 conditions per place. [2023-11-06 22:37:03,583 INFO L140 encePairwiseOnDemand]: 222/232 looper letters, 119 selfloop transitions, 79 changer transitions 102/300 dead transitions. [2023-11-06 22:37:03,583 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 300 transitions, 3060 flow [2023-11-06 22:37:03,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 22:37:03,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-06 22:37:03,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4018 transitions. [2023-11-06 22:37:03,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4224137931034483 [2023-11-06 22:37:03,598 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4018 transitions. [2023-11-06 22:37:03,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4018 transitions. [2023-11-06 22:37:03,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:03,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4018 transitions. [2023-11-06 22:37:03,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 98.0) internal successors, (4018), 41 states have internal predecessors, (4018), 0 states have call successors, (0), 0 states 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 22:37:03,634 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 232.0) internal successors, (9744), 42 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states 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 22:37:03,639 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 232.0) internal successors, (9744), 42 states have internal predecessors, (9744), 0 states have call successors, (0), 0 states 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 22:37:03,639 INFO L175 Difference]: Start difference. First operand has 86 places, 70 transitions, 655 flow. Second operand 41 states and 4018 transitions. [2023-11-06 22:37:03,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 300 transitions, 3060 flow [2023-11-06 22:37:03,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 300 transitions, 2270 flow, removed 376 selfloop flow, removed 10 redundant places. [2023-11-06 22:37:03,672 INFO L231 Difference]: Finished difference. Result has 130 places, 116 transitions, 1040 flow [2023-11-06 22:37:03,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=1040, PETRI_PLACES=130, PETRI_TRANSITIONS=116} [2023-11-06 22:37:03,673 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 87 predicate places. [2023-11-06 22:37:03,673 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 116 transitions, 1040 flow [2023-11-06 22:37:03,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 94.52173913043478) internal successors, (2174), 23 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states 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 22:37:03,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:03,675 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:03,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:03,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-06 22:37:03,882 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:37:03,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:03,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1871980321, now seen corresponding path program 1 times [2023-11-06 22:37:03,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:03,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133989963] [2023-11-06 22:37:03,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:03,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:03,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:04,243 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:04,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133989963] [2023-11-06 22:37:04,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133989963] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:04,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743867215] [2023-11-06 22:37:04,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:04,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:04,245 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:04,246 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:04,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:37:04,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:04,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:37:04,355 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:04,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:05,110 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:05,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743867215] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:05,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:05,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-11-06 22:37:05,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700365551] [2023-11-06 22:37:05,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:05,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:37:05,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:05,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:37:05,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:37:05,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2023-11-06 22:37:05,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 116 transitions, 1040 flow. Second operand has 21 states, 21 states have (on average 89.76190476190476) internal successors, (1885), 21 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 22:37:05,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:05,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2023-11-06 22:37:05,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:09,541 INFO L124 PetriNetUnfolderBase]: 1621/2610 cut-off events. [2023-11-06 22:37:09,541 INFO L125 PetriNetUnfolderBase]: For 39355/39355 co-relation queries the response was YES. [2023-11-06 22:37:09,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14156 conditions, 2610 events. 1621/2610 cut-off events. For 39355/39355 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 12754 event pairs, 7 based on Foata normal form. 192/2802 useless extension candidates. Maximal degree in co-relation 14115. Up to 498 conditions per place. [2023-11-06 22:37:09,582 INFO L140 encePairwiseOnDemand]: 223/232 looper letters, 228 selfloop transitions, 147 changer transitions 258/633 dead transitions. [2023-11-06 22:37:09,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 633 transitions, 6901 flow [2023-11-06 22:37:09,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2023-11-06 22:37:09,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2023-11-06 22:37:09,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 6919 transitions. [2023-11-06 22:37:09,602 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40301724137931033 [2023-11-06 22:37:09,603 INFO L72 ComplementDD]: Start complementDD. Operand 74 states and 6919 transitions. [2023-11-06 22:37:09,603 INFO L73 IsDeterministic]: Start isDeterministic. Operand 74 states and 6919 transitions. [2023-11-06 22:37:09,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:09,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 74 states and 6919 transitions. [2023-11-06 22:37:09,626 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 75 states, 74 states have (on average 93.5) internal successors, (6919), 74 states have internal predecessors, (6919), 0 states have call successors, (0), 0 states 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 22:37:09,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 75 states, 75 states have (on average 232.0) internal successors, (17400), 75 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states 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 22:37:09,662 INFO L81 ComplementDD]: Finished complementDD. Result has 75 states, 75 states have (on average 232.0) internal successors, (17400), 75 states have internal predecessors, (17400), 0 states have call successors, (0), 0 states 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 22:37:09,663 INFO L175 Difference]: Start difference. First operand has 130 places, 116 transitions, 1040 flow. Second operand 74 states and 6919 transitions. [2023-11-06 22:37:09,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 633 transitions, 6901 flow [2023-11-06 22:37:09,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 633 transitions, 5639 flow, removed 495 selfloop flow, removed 24 redundant places. [2023-11-06 22:37:09,948 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 1787 flow [2023-11-06 22:37:09,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=74, PETRI_FLOW=1787, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2023-11-06 22:37:09,949 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 149 predicate places. [2023-11-06 22:37:09,949 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 1787 flow [2023-11-06 22:37:09,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 89.76190476190476) internal successors, (1885), 21 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 22:37:09,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:09,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:09,968 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:37:10,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:37:10,157 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:37:10,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:10,158 INFO L85 PathProgramCache]: Analyzing trace with hash -1788851955, now seen corresponding path program 2 times [2023-11-06 22:37:10,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284952995] [2023-11-06 22:37:10,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:10,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:10,550 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:10,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284952995] [2023-11-06 22:37:10,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284952995] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:10,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427032987] [2023-11-06 22:37:10,551 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:37:10,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:10,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:10,553 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:10,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:37:10,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:37:10,667 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:10,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:37:10,671 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:10,866 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:10,866 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:11,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:11,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427032987] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:11,257 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:11,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 20 [2023-11-06 22:37:11,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688381210] [2023-11-06 22:37:11,258 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:11,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:37:11,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:11,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:37:11,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=327, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:37:11,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2023-11-06 22:37:11,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 180 transitions, 1787 flow. Second operand has 21 states, 21 states have (on average 89.76190476190476) internal successors, (1885), 21 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 22:37:11,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:11,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2023-11-06 22:37:11,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:14,885 INFO L124 PetriNetUnfolderBase]: 2598/4229 cut-off events. [2023-11-06 22:37:14,885 INFO L125 PetriNetUnfolderBase]: For 129062/129062 co-relation queries the response was YES. [2023-11-06 22:37:14,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27954 conditions, 4229 events. 2598/4229 cut-off events. For 129062/129062 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 22744 event pairs, 43 based on Foata normal form. 224/4453 useless extension candidates. Maximal degree in co-relation 27897. Up to 801 conditions per place. [2023-11-06 22:37:14,967 INFO L140 encePairwiseOnDemand]: 223/232 looper letters, 215 selfloop transitions, 268 changer transitions 285/768 dead transitions. [2023-11-06 22:37:14,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 768 transitions, 9587 flow [2023-11-06 22:37:14,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-06 22:37:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-06 22:37:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 5425 transitions. [2023-11-06 22:37:14,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40316587395957193 [2023-11-06 22:37:14,981 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 5425 transitions. [2023-11-06 22:37:14,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 5425 transitions. [2023-11-06 22:37:14,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:14,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 5425 transitions. [2023-11-06 22:37:14,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 93.53448275862068) internal successors, (5425), 58 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states 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 22:37:15,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 232.0) internal successors, (13688), 59 states have internal predecessors, (13688), 0 states have call successors, (0), 0 states 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 22:37:15,025 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 232.0) internal successors, (13688), 59 states have internal predecessors, (13688), 0 states have call successors, (0), 0 states 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 22:37:15,026 INFO L175 Difference]: Start difference. First operand has 192 places, 180 transitions, 1787 flow. Second operand 58 states and 5425 transitions. [2023-11-06 22:37:15,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 768 transitions, 9587 flow [2023-11-06 22:37:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 768 transitions, 6994 flow, removed 832 selfloop flow, removed 45 redundant places. [2023-11-06 22:37:15,427 INFO L231 Difference]: Finished difference. Result has 195 places, 325 transitions, 3305 flow [2023-11-06 22:37:15,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=3305, PETRI_PLACES=195, PETRI_TRANSITIONS=325} [2023-11-06 22:37:15,429 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 152 predicate places. [2023-11-06 22:37:15,429 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 325 transitions, 3305 flow [2023-11-06 22:37:15,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 89.76190476190476) internal successors, (1885), 21 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states 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 22:37:15,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:15,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:15,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:15,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 22:37:15,637 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:37:15,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:15,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1036728599, now seen corresponding path program 3 times [2023-11-06 22:37:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562366695] [2023-11-06 22:37:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:16,072 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:16,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:16,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562366695] [2023-11-06 22:37:16,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562366695] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:16,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288558098] [2023-11-06 22:37:16,073 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 22:37:16,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:16,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:16,077 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:16,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:37:16,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 22:37:16,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:16,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:37:16,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:16,559 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:16,559 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:16,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288558098] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:16,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:16,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 20 [2023-11-06 22:37:16,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760766968] [2023-11-06 22:37:16,976 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:16,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 22:37:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 22:37:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-06 22:37:17,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 232 [2023-11-06 22:37:17,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 325 transitions, 3305 flow. Second operand has 21 states, 21 states have (on average 91.14285714285714) internal successors, (1914), 21 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:37:17,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:17,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 232 [2023-11-06 22:37:17,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:23,810 INFO L124 PetriNetUnfolderBase]: 5692/9233 cut-off events. [2023-11-06 22:37:23,811 INFO L125 PetriNetUnfolderBase]: For 182144/182144 co-relation queries the response was YES. [2023-11-06 22:37:23,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54483 conditions, 9233 events. 5692/9233 cut-off events. For 182144/182144 co-relation queries the response was YES. Maximal size of possible extension queue 363. Compared 56521 event pairs, 187 based on Foata normal form. 578/9811 useless extension candidates. Maximal degree in co-relation 54433. Up to 1732 conditions per place. [2023-11-06 22:37:23,974 INFO L140 encePairwiseOnDemand]: 223/232 looper letters, 419 selfloop transitions, 407 changer transitions 806/1632 dead transitions. [2023-11-06 22:37:23,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 1632 transitions, 19238 flow [2023-11-06 22:37:23,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2023-11-06 22:37:23,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2023-11-06 22:37:23,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 8576 transitions. [2023-11-06 22:37:24,000 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40621447517999243 [2023-11-06 22:37:24,000 INFO L72 ComplementDD]: Start complementDD. Operand 91 states and 8576 transitions. [2023-11-06 22:37:24,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 91 states and 8576 transitions. [2023-11-06 22:37:24,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:24,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 91 states and 8576 transitions. [2023-11-06 22:37:24,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 92 states, 91 states have (on average 94.24175824175825) internal successors, (8576), 91 states have internal predecessors, (8576), 0 states have call successors, (0), 0 states 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 22:37:24,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 92 states, 92 states have (on average 232.0) internal successors, (21344), 92 states have internal predecessors, (21344), 0 states have call successors, (0), 0 states 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 22:37:24,062 INFO L81 ComplementDD]: Finished complementDD. Result has 92 states, 92 states have (on average 232.0) internal successors, (21344), 92 states have internal predecessors, (21344), 0 states have call successors, (0), 0 states 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 22:37:24,062 INFO L175 Difference]: Start difference. First operand has 195 places, 325 transitions, 3305 flow. Second operand 91 states and 8576 transitions. [2023-11-06 22:37:24,062 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 1632 transitions, 19238 flow [2023-11-06 22:37:24,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 1632 transitions, 18089 flow, removed 564 selfloop flow, removed 24 redundant places. [2023-11-06 22:37:24,869 INFO L231 Difference]: Finished difference. Result has 310 places, 618 transitions, 7757 flow [2023-11-06 22:37:24,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=3118, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=181, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=91, PETRI_FLOW=7757, PETRI_PLACES=310, PETRI_TRANSITIONS=618} [2023-11-06 22:37:24,871 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 267 predicate places. [2023-11-06 22:37:24,871 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 618 transitions, 7757 flow [2023-11-06 22:37:24,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 91.14285714285714) internal successors, (1914), 21 states have internal predecessors, (1914), 0 states have call successors, (0), 0 states 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 22:37:24,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:24,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:24,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-06 22:37:25,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:37:25,079 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:37:25,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:25,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1225963959, now seen corresponding path program 4 times [2023-11-06 22:37:25,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:25,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196263885] [2023-11-06 22:37:25,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:25,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:25,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196263885] [2023-11-06 22:37:25,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196263885] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:25,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1324496254] [2023-11-06 22:37:25,768 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 22:37:25,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:25,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:25,773 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:25,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:37:25,898 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 22:37:25,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:25,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:37:25,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:26,244 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:26,245 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:26,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1324496254] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:26,947 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:26,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 8] total 26 [2023-11-06 22:37:26,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103297758] [2023-11-06 22:37:26,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:26,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:37:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:26,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:37:26,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=562, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:37:27,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 232 [2023-11-06 22:37:27,317 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 618 transitions, 7757 flow. Second operand has 27 states, 27 states have (on average 93.4074074074074) internal successors, (2522), 27 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states 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 22:37:27,317 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:27,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 232 [2023-11-06 22:37:27,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:37:41,965 INFO L124 PetriNetUnfolderBase]: 13471/22021 cut-off events. [2023-11-06 22:37:41,965 INFO L125 PetriNetUnfolderBase]: For 1333330/1333335 co-relation queries the response was YES. [2023-11-06 22:37:42,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181923 conditions, 22021 events. 13471/22021 cut-off events. For 1333330/1333335 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 157064 event pairs, 214 based on Foata normal form. 891/22912 useless extension candidates. Maximal degree in co-relation 181821. Up to 4232 conditions per place. [2023-11-06 22:37:42,403 INFO L140 encePairwiseOnDemand]: 224/232 looper letters, 483 selfloop transitions, 1158 changer transitions 1625/3271 dead transitions. [2023-11-06 22:37:42,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 3271 transitions, 49922 flow [2023-11-06 22:37:42,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2023-11-06 22:37:42,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2023-11-06 22:37:42,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 12281 transitions. [2023-11-06 22:37:42,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234827586206897 [2023-11-06 22:37:42,428 INFO L72 ComplementDD]: Start complementDD. Operand 125 states and 12281 transitions. [2023-11-06 22:37:42,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 125 states and 12281 transitions. [2023-11-06 22:37:42,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:37:42,433 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 125 states and 12281 transitions. [2023-11-06 22:37:42,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 126 states, 125 states have (on average 98.248) internal successors, (12281), 125 states have internal predecessors, (12281), 0 states have call successors, (0), 0 states 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 22:37:42,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 126 states, 126 states have (on average 232.0) internal successors, (29232), 126 states have internal predecessors, (29232), 0 states have call successors, (0), 0 states 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 22:37:42,496 INFO L81 ComplementDD]: Finished complementDD. Result has 126 states, 126 states have (on average 232.0) internal successors, (29232), 126 states have internal predecessors, (29232), 0 states have call successors, (0), 0 states 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 22:37:42,496 INFO L175 Difference]: Start difference. First operand has 310 places, 618 transitions, 7757 flow. Second operand 125 states and 12281 transitions. [2023-11-06 22:37:42,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 3271 transitions, 49922 flow [2023-11-06 22:37:52,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 3271 transitions, 43988 flow, removed 2957 selfloop flow, removed 48 redundant places. [2023-11-06 22:37:52,296 INFO L231 Difference]: Finished difference. Result has 396 places, 1322 transitions, 18906 flow [2023-11-06 22:37:52,297 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=7094, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=459, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=125, PETRI_FLOW=18906, PETRI_PLACES=396, PETRI_TRANSITIONS=1322} [2023-11-06 22:37:52,297 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 353 predicate places. [2023-11-06 22:37:52,297 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 1322 transitions, 18906 flow [2023-11-06 22:37:52,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.4074074074074) internal successors, (2522), 27 states have internal predecessors, (2522), 0 states have call successors, (0), 0 states 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 22:37:52,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:37:52,298 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:37:52,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:37:52,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:52,499 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2023-11-06 22:37:52,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:37:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -203986133, now seen corresponding path program 5 times [2023-11-06 22:37:52,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:37:52,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514597415] [2023-11-06 22:37:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:37:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:37:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:37:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:37:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514597415] [2023-11-06 22:37:53,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514597415] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:37:53,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672596416] [2023-11-06 22:37:53,241 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 22:37:53,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:37:53,241 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:37:53,245 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:37:53,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:37:53,375 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-06 22:37:53,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:37:53,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:37:53,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:37:53,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:53,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:37:54,472 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:37:54,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672596416] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:37:54,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:37:54,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 30 [2023-11-06 22:37:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655118200] [2023-11-06 22:37:54,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:37:54,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:37:54,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:37:54,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:37:54,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=730, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:37:54,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 232 [2023-11-06 22:37:54,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 1322 transitions, 18906 flow. Second operand has 31 states, 31 states have (on average 89.19354838709677) internal successors, (2765), 31 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states 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 22:37:54,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:37:54,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 232 [2023-11-06 22:37:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:38:08,892 INFO L124 PetriNetUnfolderBase]: 13299/21140 cut-off events. [2023-11-06 22:38:08,893 INFO L125 PetriNetUnfolderBase]: For 847994/847994 co-relation queries the response was YES. [2023-11-06 22:38:09,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 164037 conditions, 21140 events. 13299/21140 cut-off events. For 847994/847994 co-relation queries the response was YES. Maximal size of possible extension queue 889. Compared 146497 event pairs, 187 based on Foata normal form. 878/22018 useless extension candidates. Maximal degree in co-relation 163910. Up to 4638 conditions per place. [2023-11-06 22:38:09,276 INFO L140 encePairwiseOnDemand]: 223/232 looper letters, 0 selfloop transitions, 0 changer transitions 2972/2972 dead transitions. [2023-11-06 22:38:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 2972 transitions, 52172 flow [2023-11-06 22:38:09,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2023-11-06 22:38:09,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2023-11-06 22:38:09,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 5661 transitions. [2023-11-06 22:38:09,288 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4000141322781232 [2023-11-06 22:38:09,288 INFO L72 ComplementDD]: Start complementDD. Operand 61 states and 5661 transitions. [2023-11-06 22:38:09,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 61 states and 5661 transitions. [2023-11-06 22:38:09,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:38:09,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 61 states and 5661 transitions. [2023-11-06 22:38:09,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 62 states, 61 states have (on average 92.80327868852459) internal successors, (5661), 61 states have internal predecessors, (5661), 0 states have call successors, (0), 0 states 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 22:38:09,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 62 states, 62 states have (on average 232.0) internal successors, (14384), 62 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 22:38:09,319 INFO L81 ComplementDD]: Finished complementDD. Result has 62 states, 62 states have (on average 232.0) internal successors, (14384), 62 states have internal predecessors, (14384), 0 states have call successors, (0), 0 states 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 22:38:09,319 INFO L175 Difference]: Start difference. First operand has 396 places, 1322 transitions, 18906 flow. Second operand 61 states and 5661 transitions. [2023-11-06 22:38:09,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 2972 transitions, 52172 flow [2023-11-06 22:38:23,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 2972 transitions, 42381 flow, removed 4527 selfloop flow, removed 67 redundant places. [2023-11-06 22:38:23,069 INFO L231 Difference]: Finished difference. Result has 322 places, 0 transitions, 0 flow [2023-11-06 22:38:23,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=232, PETRI_DIFFERENCE_MINUEND_FLOW=16255, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=61, PETRI_FLOW=0, PETRI_PLACES=322, PETRI_TRANSITIONS=0} [2023-11-06 22:38:23,070 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 279 predicate places. [2023-11-06 22:38:23,070 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 0 transitions, 0 flow [2023-11-06 22:38:23,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 89.19354838709677) internal successors, (2765), 31 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states 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 22:38:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 17 remaining) [2023-11-06 22:38:23,074 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 17 remaining) [2023-11-06 22:38:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 17 remaining) [2023-11-06 22:38:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 17 remaining) [2023-11-06 22:38:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 17 remaining) [2023-11-06 22:38:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 17 remaining) [2023-11-06 22:38:23,075 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 17 remaining) [2023-11-06 22:38:23,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 17 remaining) [2023-11-06 22:38:23,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 17 remaining) [2023-11-06 22:38:23,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 17 remaining) [2023-11-06 22:38:23,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 17 remaining) [2023-11-06 22:38:23,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 17 remaining) [2023-11-06 22:38:23,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK (4 of 17 remaining) [2023-11-06 22:38:23,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK (3 of 17 remaining) [2023-11-06 22:38:23,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 17 remaining) [2023-11-06 22:38:23,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 17 remaining) [2023-11-06 22:38:23,078 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 17 remaining) [2023-11-06 22:38:23,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:38:23,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:38:23,285 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:38:23,289 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-06 22:38:23,289 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:38:23,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:38:23 BasicIcfg [2023-11-06 22:38:23,295 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:38:23,295 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:38:23,296 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:38:23,296 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:38:23,297 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:45" (3/4) ... [2023-11-06 22:38:23,299 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:38:23,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-06 22:38:23,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-06 22:38:23,305 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-06 22:38:23,315 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2023-11-06 22:38:23,315 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-06 22:38:23,315 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:38:23,316 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:38:23,375 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:38:23,376 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:38:23,376 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:38:23,377 INFO L158 Benchmark]: Toolchain (without parser) took 98967.36ms. Allocated memory was 140.5MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 107.3MB in the beginning and 6.7GB in the end (delta: -6.6GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-11-06 22:38:23,378 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:38:23,378 INFO L158 Benchmark]: CACSL2BoogieTranslator took 299.20ms. Allocated memory is still 140.5MB. Free memory was 107.3MB in the beginning and 95.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:38:23,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.29ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 94.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:38:23,379 INFO L158 Benchmark]: Boogie Preprocessor took 33.15ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:38:23,380 INFO L158 Benchmark]: RCFGBuilder took 684.49ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 76.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-06 22:38:23,380 INFO L158 Benchmark]: TraceAbstraction took 97810.31ms. Allocated memory was 140.5MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 75.6MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. [2023-11-06 22:38:23,381 INFO L158 Benchmark]: Witness Printer took 80.90ms. Allocated memory is still 8.1GB. Free memory was 6.8GB in the beginning and 6.7GB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:38:23,383 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 140.5MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 299.20ms. Allocated memory is still 140.5MB. Free memory was 107.3MB in the beginning and 95.9MB in the end (delta: 11.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.29ms. Allocated memory is still 140.5MB. Free memory was 95.9MB in the beginning and 94.1MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 33.15ms. Allocated memory is still 140.5MB. Free memory was 94.1MB in the beginning and 92.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 684.49ms. Allocated memory is still 140.5MB. Free memory was 92.7MB in the beginning and 76.3MB in the end (delta: 16.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 97810.31ms. Allocated memory was 140.5MB in the beginning and 8.1GB in the end (delta: 8.0GB). Free memory was 75.6MB in the beginning and 6.8GB in the end (delta: -6.7GB). Peak memory consumption was 1.6GB. Max. memory is 16.1GB. * Witness Printer took 80.90ms. Allocated memory is still 8.1GB. Free memory was 6.8GB in the beginning and 6.7GB in the end (delta: 3.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 119 PlacesBefore, 43 PlacesAfterwards, 116 TransitionsBefore, 35 TransitionsAfterwards, 1458 CoEnabledTransitionPairs, 6 FixpointIterations, 59 TrivialSequentialCompositions, 36 ConcurrentSequentialCompositions, 2 TrivialYvCompositions, 6 ConcurrentYvCompositions, 5 ChoiceCompositions, 108 TotalNumberOfCompositions, 2085 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1541, independent: 1508, independent conditional: 0, independent unconditional: 1508, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 717, independent: 706, independent conditional: 0, independent unconditional: 706, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1541, independent: 802, independent conditional: 0, independent unconditional: 802, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 717, unknown conditional: 0, unknown unconditional: 717] , Statistics on independence cache: Total cache size (in pairs): 58, Positive cache size: 54, Positive conditional cache size: 0, Positive unconditional cache size: 54, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 21]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 97]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 145 locations, 17 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 97.6s, OverallIterations: 20, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 77.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4779 SdHoareTripleChecker+Valid, 12.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4412 mSDsluCounter, 2292 SdHoareTripleChecker+Invalid, 10.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2277 mSDsCounter, 426 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13497 IncrementalHoareTripleChecker+Invalid, 13923 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 426 mSolverCounterUnsat, 15 mSDtfsCounter, 13497 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 933 GetRequests, 297 SyntacticMatches, 7 SemanticMatches, 629 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20812 ImplicationChecksByTransitivity, 15.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18906occurred in iteration=19, InterpolantAutomatonStates: 536, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 10.8s InterpolantComputationTime, 531 NumberOfCodeBlocks, 531 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 688 ConstructedInterpolants, 0 QuantifiedInterpolants, 5676 SizeOfPredicates, 73 NumberOfNonLiveVariables, 1542 ConjunctsInSsa, 106 ConjunctsInUnsatCore, 37 InterpolantComputations, 12 PerfectInterpolantSequences, 48/167 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 14 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-06 22:38:23,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_897ea232-4647-4557-b8ac-29c4a3178a3a/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE