./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:49,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:49,685 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-12 02:16:49,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:49,696 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:49,742 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:49,742 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:49,743 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:49,744 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:49,752 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:49,753 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:49,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:49,754 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:49,756 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:49,756 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:49,757 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:49,757 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:49,758 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:49,758 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-12 02:16:49,758 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-12 02:16:49,759 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-12 02:16:49,759 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:49,760 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-12 02:16:49,760 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:16:49,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:49,761 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:49,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:49,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:49,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:49,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:49,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:49,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:49,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:49,766 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:49,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:49,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:49,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:49,767 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:49,767 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_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d87195cdf1d0fd4bcadf67f37be6f46388ea22a2ec77b383d012327e126a2173 [2023-11-12 02:16:50,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:50,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:50,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:50,118 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:50,119 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:50,120 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-12 02:16:53,380 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:53,587 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:53,587 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2023-11-12 02:16:53,596 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/data/52c929811/70f535ad712946e0b21cff22a09e45fd/FLAG5fb95df56 [2023-11-12 02:16:53,612 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/data/52c929811/70f535ad712946e0b21cff22a09e45fd [2023-11-12 02:16:53,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:53,617 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:53,619 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:53,619 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:53,625 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:53,626 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ca3f4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53, skipping insertion in model container [2023-11-12 02:16:53,627 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,656 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:53,858 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:53,870 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:53,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:53,909 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:16:53,910 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:16:53,918 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:53,918 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53 WrapperNode [2023-11-12 02:16:53,918 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:53,920 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:53,920 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:53,920 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:53,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,973 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 211 [2023-11-12 02:16:53,974 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:53,974 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:53,975 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:53,975 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:53,984 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,984 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,988 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:53,997 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:54,000 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:54,002 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:54,004 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:54,008 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:54,009 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:54,009 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:54,009 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:54,010 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (1/1) ... [2023-11-12 02:16:54,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:54,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:54,043 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:54,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f08c8331-6043-483e-a271-faccdb0fb1b8/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:54,093 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:54,094 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:16:54,094 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:16:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:16:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:16:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:16:54,095 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:16:54,095 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-12 02:16:54,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-12 02:16:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:16:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:16:54,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:16:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:16:54,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:16:54,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:54,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:16:54,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:16:54,103 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:16:54,306 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:54,309 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:54,737 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:54,919 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:54,920 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:16:54,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:54 BoogieIcfgContainer [2023-11-12 02:16:54,923 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:54,926 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:54,926 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:54,929 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:54,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:53" (1/3) ... [2023-11-12 02:16:54,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:54, skipping insertion in model container [2023-11-12 02:16:54,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:53" (2/3) ... [2023-11-12 02:16:54,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b5f239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:54, skipping insertion in model container [2023-11-12 02:16:54,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:54" (3/3) ... [2023-11-12 02:16:54,933 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-11-12 02:16:54,954 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:54,954 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 02:16:54,954 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:16:55,036 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-12 02:16:55,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 173 transitions, 374 flow [2023-11-12 02:16:55,161 INFO L124 PetriNetUnfolderBase]: 2/169 cut-off events. [2023-11-12 02:16:55,161 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:16:55,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 169 events. 2/169 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 124 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-12 02:16:55,167 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 173 transitions, 374 flow [2023-11-12 02:16:55,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 164 transitions, 352 flow [2023-11-12 02:16:55,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:16:55,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 164 transitions, 352 flow [2023-11-12 02:16:55,200 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 164 transitions, 352 flow [2023-11-12 02:16:55,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 164 transitions, 352 flow [2023-11-12 02:16:55,285 INFO L124 PetriNetUnfolderBase]: 2/164 cut-off events. [2023-11-12 02:16:55,285 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-12 02:16:55,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 164 events. 2/164 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 123 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2023-11-12 02:16:55,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 2060 [2023-11-12 02:17:02,767 INFO L134 LiptonReduction]: Checked pairs total: 10193 [2023-11-12 02:17:02,768 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-12 02:17:02,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:17:02,793 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;@16108b9f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:17:02,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-12 02:17:02,795 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:17:02,795 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-11-12 02:17:02,796 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:02,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:02,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-11-12 02:17:02,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:02,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:02,803 INFO L85 PathProgramCache]: Analyzing trace with hash 680, now seen corresponding path program 1 times [2023-11-12 02:17:02,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:02,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985278100] [2023-11-12 02:17:02,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:02,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:02,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985278100] [2023-11-12 02:17:02,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985278100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:02,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:02,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-11-12 02:17:02,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400626509] [2023-11-12 02:17:02,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:02,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:17:02,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:02,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:17:02,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:17:02,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 323 [2023-11-12 02:17:02,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 126 flow. Second operand has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:02,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:02,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 323 [2023-11-12 02:17:02,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:03,858 INFO L124 PetriNetUnfolderBase]: 4185/6246 cut-off events. [2023-11-12 02:17:03,858 INFO L125 PetriNetUnfolderBase]: For 208/208 co-relation queries the response was YES. [2023-11-12 02:17:03,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12391 conditions, 6246 events. 4185/6246 cut-off events. For 208/208 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 35746 event pairs, 4185 based on Foata normal form. 0/5321 useless extension candidates. Maximal degree in co-relation 10250. Up to 5885 conditions per place. [2023-11-12 02:17:03,927 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 43 selfloop transitions, 0 changer transitions 0/48 dead transitions. [2023-11-12 02:17:03,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 48 transitions, 206 flow [2023-11-12 02:17:03,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:17:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-12 02:17:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 346 transitions. [2023-11-12 02:17:03,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5356037151702786 [2023-11-12 02:17:03,950 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 346 transitions. [2023-11-12 02:17:03,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 346 transitions. [2023-11-12 02:17:03,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:03,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 346 transitions. [2023-11-12 02:17:03,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 173.0) internal successors, (346), 2 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:03,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:03,974 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 323.0) internal successors, (969), 3 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:03,980 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 126 flow. Second operand 2 states and 346 transitions. [2023-11-12 02:17:03,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 48 transitions, 206 flow [2023-11-12 02:17:04,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 48 transitions, 190 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-12 02:17:04,008 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 104 flow [2023-11-12 02:17:04,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=104, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-11-12 02:17:04,016 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-12 02:17:04,017 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 104 flow [2023-11-12 02:17:04,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 150.5) internal successors, (301), 2 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:04,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:04,018 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:17:04,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:04,018 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:04,020 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:04,020 INFO L85 PathProgramCache]: Analyzing trace with hash 670289, now seen corresponding path program 1 times [2023-11-12 02:17:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:04,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57588375] [2023-11-12 02:17:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:04,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57588375] [2023-11-12 02:17:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57588375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:04,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:04,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426827573] [2023-11-12 02:17:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:04,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:04,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:04,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:04,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:04,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:04,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:04,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:04,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:04,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:05,369 INFO L124 PetriNetUnfolderBase]: 4038/6029 cut-off events. [2023-11-12 02:17:05,370 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:05,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11786 conditions, 6029 events. 4038/6029 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 34402 event pairs, 4038 based on Foata normal form. 0/5172 useless extension candidates. Maximal degree in co-relation 11783. Up to 5669 conditions per place. [2023-11-12 02:17:05,417 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-11-12 02:17:05,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 182 flow [2023-11-12 02:17:05,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:05,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:05,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 475 transitions. [2023-11-12 02:17:05,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-11-12 02:17:05,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 475 transitions. [2023-11-12 02:17:05,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 475 transitions. [2023-11-12 02:17:05,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:05,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 475 transitions. [2023-11-12 02:17:05,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:05,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:05,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:05,438 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 104 flow. Second operand 3 states and 475 transitions. [2023-11-12 02:17:05,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 182 flow [2023-11-12 02:17:05,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:05,441 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 102 flow [2023-11-12 02:17:05,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-11-12 02:17:05,443 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -10 predicate places. [2023-11-12 02:17:05,444 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 102 flow [2023-11-12 02:17:05,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:05,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:05,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:17:05,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:05,451 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:05,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:05,454 INFO L85 PathProgramCache]: Analyzing trace with hash 670288, now seen corresponding path program 1 times [2023-11-12 02:17:05,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:05,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048361324] [2023-11-12 02:17:05,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:05,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:05,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:05,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048361324] [2023-11-12 02:17:05,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048361324] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:05,631 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:05,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:05,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139370373] [2023-11-12 02:17:05,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:05,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:05,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:05,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:05,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:05,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-12 02:17:05,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:05,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:05,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-12 02:17:05,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:06,469 INFO L124 PetriNetUnfolderBase]: 3891/5812 cut-off events. [2023-11-12 02:17:06,469 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11356 conditions, 5812 events. 3891/5812 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 33026 event pairs, 3891 based on Foata normal form. 0/5023 useless extension candidates. Maximal degree in co-relation 11352. Up to 5454 conditions per place. [2023-11-12 02:17:06,531 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 38 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-11-12 02:17:06,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 44 transitions, 176 flow [2023-11-12 02:17:06,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:06,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 455 transitions. [2023-11-12 02:17:06,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4695562435500516 [2023-11-12 02:17:06,536 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 455 transitions. [2023-11-12 02:17:06,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 455 transitions. [2023-11-12 02:17:06,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:06,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 455 transitions. [2023-11-12 02:17:06,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.66666666666666) internal successors, (455), 3 states have internal predecessors, (455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:06,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:06,546 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:06,546 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 102 flow. Second operand 3 states and 455 transitions. [2023-11-12 02:17:06,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 44 transitions, 176 flow [2023-11-12 02:17:06,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 175 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:06,551 INFO L231 Difference]: Finished difference. Result has 53 places, 44 transitions, 99 flow [2023-11-12 02:17:06,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=99, PETRI_PLACES=53, PETRI_TRANSITIONS=44} [2023-11-12 02:17:06,554 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -11 predicate places. [2023-11-12 02:17:06,554 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 44 transitions, 99 flow [2023-11-12 02:17:06,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:06,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:06,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:17:06,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:17:06,561 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:06,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash 644161763, now seen corresponding path program 1 times [2023-11-12 02:17:06,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:06,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429479342] [2023-11-12 02:17:06,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:06,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:06,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:06,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:06,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429479342] [2023-11-12 02:17:06,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429479342] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:06,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:06,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:06,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528479042] [2023-11-12 02:17:06,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:06,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:06,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:06,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:06,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:06,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-12 02:17:06,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 44 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:06,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:06,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-12 02:17:06,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:07,469 INFO L124 PetriNetUnfolderBase]: 3843/5728 cut-off events. [2023-11-12 02:17:07,470 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:07,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11193 conditions, 5728 events. 3843/5728 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32537 event pairs, 3843 based on Foata normal form. 0/4973 useless extension candidates. Maximal degree in co-relation 11189. Up to 5374 conditions per place. [2023-11-12 02:17:07,508 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 36 selfloop transitions, 1 changer transitions 0/42 dead transitions. [2023-11-12 02:17:07,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 169 flow [2023-11-12 02:17:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:07,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-11-12 02:17:07,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674922600619195 [2023-11-12 02:17:07,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-11-12 02:17:07,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-11-12 02:17:07,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:07,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-11-12 02:17:07,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:07,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:07,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:07,520 INFO L175 Difference]: Start difference. First operand has 53 places, 44 transitions, 99 flow. Second operand 3 states and 453 transitions. [2023-11-12 02:17:07,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 169 flow [2023-11-12 02:17:07,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 42 transitions, 168 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:07,522 INFO L231 Difference]: Finished difference. Result has 52 places, 42 transitions, 96 flow [2023-11-12 02:17:07,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=96, PETRI_PLACES=52, PETRI_TRANSITIONS=42} [2023-11-12 02:17:07,524 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -12 predicate places. [2023-11-12 02:17:07,524 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 42 transitions, 96 flow [2023-11-12 02:17:07,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.66666666666666) internal successors, (419), 3 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:07,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:07,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:17:07,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:17:07,525 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:07,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:07,526 INFO L85 PathProgramCache]: Analyzing trace with hash 644161762, now seen corresponding path program 1 times [2023-11-12 02:17:07,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:07,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475241494] [2023-11-12 02:17:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:07,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:07,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475241494] [2023-11-12 02:17:07,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475241494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:07,637 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:07,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:07,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867777086] [2023-11-12 02:17:07,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:07,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:07,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:07,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:07,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:07,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:07,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 42 transitions, 96 flow. Second operand has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:07,713 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:07,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:07,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:08,399 INFO L124 PetriNetUnfolderBase]: 3795/5644 cut-off events. [2023-11-12 02:17:08,399 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:08,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11030 conditions, 5644 events. 3795/5644 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 32082 event pairs, 3795 based on Foata normal form. 0/4923 useless extension candidates. Maximal degree in co-relation 11026. Up to 5294 conditions per place. [2023-11-12 02:17:08,440 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 34 selfloop transitions, 1 changer transitions 0/40 dead transitions. [2023-11-12 02:17:08,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 40 transitions, 162 flow [2023-11-12 02:17:08,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:08,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-11-12 02:17:08,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840041279669763 [2023-11-12 02:17:08,444 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-11-12 02:17:08,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-11-12 02:17:08,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:08,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-11-12 02:17:08,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:08,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:08,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:08,453 INFO L175 Difference]: Start difference. First operand has 52 places, 42 transitions, 96 flow. Second operand 3 states and 469 transitions. [2023-11-12 02:17:08,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 40 transitions, 162 flow [2023-11-12 02:17:08,454 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 161 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:08,455 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 93 flow [2023-11-12 02:17:08,456 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=93, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-11-12 02:17:08,457 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -13 predicate places. [2023-11-12 02:17:08,457 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 93 flow [2023-11-12 02:17:08,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:08,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:08,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:08,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:17:08,458 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:08,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:08,459 INFO L85 PathProgramCache]: Analyzing trace with hash 564180482, now seen corresponding path program 1 times [2023-11-12 02:17:08,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:08,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977198950] [2023-11-12 02:17:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:08,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:08,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:08,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977198950] [2023-11-12 02:17:08,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977198950] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:08,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:08,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:08,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215892564] [2023-11-12 02:17:08,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:08,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:08,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:08,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:08,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:08,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:08,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:08,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:08,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:08,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:09,289 INFO L124 PetriNetUnfolderBase]: 3648/5413 cut-off events. [2023-11-12 02:17:09,289 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:09,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10585 conditions, 5413 events. 3648/5413 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 337. Compared 30491 event pairs, 3648 based on Foata normal form. 0/4760 useless extension candidates. Maximal degree in co-relation 10581. Up to 5079 conditions per place. [2023-11-12 02:17:09,323 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 32 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-11-12 02:17:09,323 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 38 transitions, 155 flow [2023-11-12 02:17:09,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:09,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:09,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-12 02:17:09,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48194014447884415 [2023-11-12 02:17:09,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-12 02:17:09,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-12 02:17:09,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:09,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-12 02:17:09,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:09,333 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:09,334 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:09,334 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 93 flow. Second operand 3 states and 467 transitions. [2023-11-12 02:17:09,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 38 transitions, 155 flow [2023-11-12 02:17:09,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:09,337 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 90 flow [2023-11-12 02:17:09,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2023-11-12 02:17:09,338 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -14 predicate places. [2023-11-12 02:17:09,339 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 90 flow [2023-11-12 02:17:09,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:09,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:09,340 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:09,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:17:09,340 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:09,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:09,341 INFO L85 PathProgramCache]: Analyzing trace with hash 564180481, now seen corresponding path program 1 times [2023-11-12 02:17:09,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:09,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619844926] [2023-11-12 02:17:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:09,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:09,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:09,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:09,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619844926] [2023-11-12 02:17:09,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619844926] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:09,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:09,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:09,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498902850] [2023-11-12 02:17:09,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:09,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:09,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:09,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:09,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:09,506 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 323 [2023-11-12 02:17:09,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:09,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:09,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 323 [2023-11-12 02:17:09,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:10,091 INFO L124 PetriNetUnfolderBase]: 3501/5182 cut-off events. [2023-11-12 02:17:10,092 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:10,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10140 conditions, 5182 events. 3501/5182 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 325. Compared 28894 event pairs, 3501 based on Foata normal form. 0/4597 useless extension candidates. Maximal degree in co-relation 10136. Up to 4864 conditions per place. [2023-11-12 02:17:10,125 INFO L140 encePairwiseOnDemand]: 320/323 looper letters, 30 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-11-12 02:17:10,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 36 transitions, 148 flow [2023-11-12 02:17:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:10,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:10,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-12 02:17:10,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4613003095975232 [2023-11-12 02:17:10,128 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-12 02:17:10,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-12 02:17:10,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:10,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-12 02:17:10,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,133 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,134 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,134 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 90 flow. Second operand 3 states and 447 transitions. [2023-11-12 02:17:10,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 36 transitions, 148 flow [2023-11-12 02:17:10,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 36 transitions, 147 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:10,136 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 87 flow [2023-11-12 02:17:10,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2023-11-12 02:17:10,137 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-12 02:17:10,137 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 87 flow [2023-11-12 02:17:10,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:10,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:10,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:17:10,138 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:10,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:10,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1011580845, now seen corresponding path program 1 times [2023-11-12 02:17:10,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:10,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104591683] [2023-11-12 02:17:10,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:10,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:10,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:10,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104591683] [2023-11-12 02:17:10,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104591683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:10,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:10,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:10,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888353838] [2023-11-12 02:17:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:10,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:10,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:10,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:10,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:10,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 323 [2023-11-12 02:17:10,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:10,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 323 [2023-11-12 02:17:10,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:10,658 INFO L124 PetriNetUnfolderBase]: 2733/4094 cut-off events. [2023-11-12 02:17:10,659 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:10,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8029 conditions, 4094 events. 2733/4094 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 22152 event pairs, 2733 based on Foata normal form. 0/3781 useless extension candidates. Maximal degree in co-relation 8025. Up to 3840 conditions per place. [2023-11-12 02:17:10,687 INFO L140 encePairwiseOnDemand]: 321/323 looper letters, 29 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-11-12 02:17:10,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 35 transitions, 145 flow [2023-11-12 02:17:10,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:10,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:10,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 448 transitions. [2023-11-12 02:17:10,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46233230134158926 [2023-11-12 02:17:10,690 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 448 transitions. [2023-11-12 02:17:10,690 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 448 transitions. [2023-11-12 02:17:10,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:10,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 448 transitions. [2023-11-12 02:17:10,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.33333333333334) internal successors, (448), 3 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,696 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 87 flow. Second operand 3 states and 448 transitions. [2023-11-12 02:17:10,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 35 transitions, 145 flow [2023-11-12 02:17:10,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 35 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:10,700 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 86 flow [2023-11-12 02:17:10,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2023-11-12 02:17:10,704 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-12 02:17:10,704 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 86 flow [2023-11-12 02:17:10,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:10,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:10,705 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:10,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:17:10,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:10,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:10,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1011580843, now seen corresponding path program 1 times [2023-11-12 02:17:10,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:10,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781018913] [2023-11-12 02:17:10,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:10,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:10,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:10,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781018913] [2023-11-12 02:17:10,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781018913] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:10,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:10,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:10,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800566151] [2023-11-12 02:17:10,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:10,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:10,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:10,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:10,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:11,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 323 [2023-11-12 02:17:11,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 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) [2023-11-12 02:17:11,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:11,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 323 [2023-11-12 02:17:11,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:11,443 INFO L124 PetriNetUnfolderBase]: 1965/3006 cut-off events. [2023-11-12 02:17:11,444 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-11-12 02:17:11,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5918 conditions, 3006 events. 1965/3006 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 15732 event pairs, 1965 based on Foata normal form. 0/2965 useless extension candidates. Maximal degree in co-relation 5914. Up to 2816 conditions per place. [2023-11-12 02:17:11,462 INFO L140 encePairwiseOnDemand]: 321/323 looper letters, 28 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-11-12 02:17:11,462 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 142 flow [2023-11-12 02:17:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:11,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:11,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-11-12 02:17:11,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42105263157894735 [2023-11-12 02:17:11,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-11-12 02:17:11,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-11-12 02:17:11,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:11,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-11-12 02:17:11,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 323.0) internal successors, (1292), 4 states have internal predecessors, (1292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:11,474 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 86 flow. Second operand 3 states and 408 transitions. [2023-11-12 02:17:11,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 142 flow [2023-11-12 02:17:11,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 34 transitions, 141 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:11,476 INFO L231 Difference]: Finished difference. Result has 49 places, 34 transitions, 85 flow [2023-11-12 02:17:11,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=49, PETRI_TRANSITIONS=34} [2023-11-12 02:17:11,478 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -15 predicate places. [2023-11-12 02:17:11,479 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 34 transitions, 85 flow [2023-11-12 02:17:11,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 127.5) internal successors, (765), 6 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) [2023-11-12 02:17:11,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:11,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:11,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:17:11,481 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:11,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:11,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1994537594, now seen corresponding path program 1 times [2023-11-12 02:17:11,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:11,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129708278] [2023-11-12 02:17:11,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:11,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:11,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129708278] [2023-11-12 02:17:12,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129708278] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:12,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:12,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:12,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057836006] [2023-11-12 02:17:12,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:12,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:12,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:12,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:12,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:12,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 323 [2023-11-12 02:17:12,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 34 transitions, 85 flow. Second operand has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:12,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:12,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 323 [2023-11-12 02:17:12,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:13,661 INFO L124 PetriNetUnfolderBase]: 7775/10913 cut-off events. [2023-11-12 02:17:13,662 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-12 02:17:13,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22079 conditions, 10913 events. 7775/10913 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 341. Compared 53609 event pairs, 2164 based on Foata normal form. 1/10914 useless extension candidates. Maximal degree in co-relation 22075. Up to 5195 conditions per place. [2023-11-12 02:17:13,737 INFO L140 encePairwiseOnDemand]: 316/323 looper letters, 89 selfloop transitions, 12 changer transitions 13/114 dead transitions. [2023-11-12 02:17:13,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 114 transitions, 487 flow [2023-11-12 02:17:13,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:13,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:17:13,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 961 transitions. [2023-11-12 02:17:13,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49587203302373584 [2023-11-12 02:17:13,743 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 961 transitions. [2023-11-12 02:17:13,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 961 transitions. [2023-11-12 02:17:13,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:13,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 961 transitions. [2023-11-12 02:17:13,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.16666666666666) internal successors, (961), 6 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:13,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:13,755 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:13,755 INFO L175 Difference]: Start difference. First operand has 49 places, 34 transitions, 85 flow. Second operand 6 states and 961 transitions. [2023-11-12 02:17:13,755 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 114 transitions, 487 flow [2023-11-12 02:17:13,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 114 transitions, 486 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:13,762 INFO L231 Difference]: Finished difference. Result has 56 places, 47 transitions, 164 flow [2023-11-12 02:17:13,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=164, PETRI_PLACES=56, PETRI_TRANSITIONS=47} [2023-11-12 02:17:13,764 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -8 predicate places. [2023-11-12 02:17:13,764 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 47 transitions, 164 flow [2023-11-12 02:17:13,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.66666666666666) internal successors, (880), 6 states have internal predecessors, (880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:13,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:13,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:13,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:17:13,766 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:13,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:13,766 INFO L85 PathProgramCache]: Analyzing trace with hash 2027045682, now seen corresponding path program 2 times [2023-11-12 02:17:13,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718242804] [2023-11-12 02:17:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:13,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:13,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:13,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718242804] [2023-11-12 02:17:13,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718242804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:13,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:13,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:13,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476673698] [2023-11-12 02:17:13,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:14,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:14,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:14,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:14,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:14,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:14,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 47 transitions, 164 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:14,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:14,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:14,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:15,025 INFO L124 PetriNetUnfolderBase]: 4089/6875 cut-off events. [2023-11-12 02:17:15,025 INFO L125 PetriNetUnfolderBase]: For 500/516 co-relation queries the response was YES. [2023-11-12 02:17:15,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14332 conditions, 6875 events. 4089/6875 cut-off events. For 500/516 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 46965 event pairs, 677 based on Foata normal form. 16/6697 useless extension candidates. Maximal degree in co-relation 14325. Up to 1759 conditions per place. [2023-11-12 02:17:15,076 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 79 selfloop transitions, 29 changer transitions 0/126 dead transitions. [2023-11-12 02:17:15,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 126 transitions, 552 flow [2023-11-12 02:17:15,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:15,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1117 transitions. [2023-11-12 02:17:15,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940291906236179 [2023-11-12 02:17:15,082 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1117 transitions. [2023-11-12 02:17:15,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1117 transitions. [2023-11-12 02:17:15,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:15,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1117 transitions. [2023-11-12 02:17:15,087 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.57142857142858) internal successors, (1117), 7 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,091 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,092 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,093 INFO L175 Difference]: Start difference. First operand has 56 places, 47 transitions, 164 flow. Second operand 7 states and 1117 transitions. [2023-11-12 02:17:15,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 126 transitions, 552 flow [2023-11-12 02:17:15,120 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 126 transitions, 546 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:15,122 INFO L231 Difference]: Finished difference. Result has 62 places, 78 transitions, 306 flow [2023-11-12 02:17:15,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=306, PETRI_PLACES=62, PETRI_TRANSITIONS=78} [2023-11-12 02:17:15,123 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, -2 predicate places. [2023-11-12 02:17:15,123 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 78 transitions, 306 flow [2023-11-12 02:17:15,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:15,124 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:15,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:17:15,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:15,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1046960268, now seen corresponding path program 3 times [2023-11-12 02:17:15,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:15,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608935668] [2023-11-12 02:17:15,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:15,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:15,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:15,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:15,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608935668] [2023-11-12 02:17:15,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608935668] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:15,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:15,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:15,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688985878] [2023-11-12 02:17:15,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:15,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:15,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:15,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:15,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:15,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:15,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 78 transitions, 306 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:15,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:15,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:15,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:16,069 INFO L124 PetriNetUnfolderBase]: 4140/6935 cut-off events. [2023-11-12 02:17:16,070 INFO L125 PetriNetUnfolderBase]: For 2417/2677 co-relation queries the response was YES. [2023-11-12 02:17:16,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17703 conditions, 6935 events. 4140/6935 cut-off events. For 2417/2677 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 46437 event pairs, 820 based on Foata normal form. 166/6937 useless extension candidates. Maximal degree in co-relation 17695. Up to 4869 conditions per place. [2023-11-12 02:17:16,131 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 83 selfloop transitions, 27 changer transitions 0/128 dead transitions. [2023-11-12 02:17:16,131 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 128 transitions, 693 flow [2023-11-12 02:17:16,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:16,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:17:16,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 788 transitions. [2023-11-12 02:17:16,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48792569659442725 [2023-11-12 02:17:16,135 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 788 transitions. [2023-11-12 02:17:16,135 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 788 transitions. [2023-11-12 02:17:16,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:16,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 788 transitions. [2023-11-12 02:17:16,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.6) internal successors, (788), 5 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,143 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,143 INFO L175 Difference]: Start difference. First operand has 62 places, 78 transitions, 306 flow. Second operand 5 states and 788 transitions. [2023-11-12 02:17:16,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 128 transitions, 693 flow [2023-11-12 02:17:16,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 128 transitions, 693 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:16,177 INFO L231 Difference]: Finished difference. Result has 68 places, 96 transitions, 489 flow [2023-11-12 02:17:16,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=489, PETRI_PLACES=68, PETRI_TRANSITIONS=96} [2023-11-12 02:17:16,178 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 4 predicate places. [2023-11-12 02:17:16,178 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 96 transitions, 489 flow [2023-11-12 02:17:16,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:16,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:16,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:17:16,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:16,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1330019752, now seen corresponding path program 4 times [2023-11-12 02:17:16,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:16,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232373973] [2023-11-12 02:17:16,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:16,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:16,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:16,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:16,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232373973] [2023-11-12 02:17:16,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232373973] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:16,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:16,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:16,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502128446] [2023-11-12 02:17:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:16,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:16,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:16,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:16,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:16,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:16,340 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 96 transitions, 489 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:16,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:16,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:16,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:17,562 INFO L124 PetriNetUnfolderBase]: 5459/9274 cut-off events. [2023-11-12 02:17:17,562 INFO L125 PetriNetUnfolderBase]: For 8166/8806 co-relation queries the response was YES. [2023-11-12 02:17:17,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27065 conditions, 9274 events. 5459/9274 cut-off events. For 8166/8806 co-relation queries the response was YES. Maximal size of possible extension queue 534. Compared 66956 event pairs, 933 based on Foata normal form. 312/9346 useless extension candidates. Maximal degree in co-relation 27054. Up to 3172 conditions per place. [2023-11-12 02:17:17,636 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 93 selfloop transitions, 61 changer transitions 0/172 dead transitions. [2023-11-12 02:17:17,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 172 transitions, 1101 flow [2023-11-12 02:17:17,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:17,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:17:17,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 963 transitions. [2023-11-12 02:17:17,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4969040247678019 [2023-11-12 02:17:17,641 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 963 transitions. [2023-11-12 02:17:17,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 963 transitions. [2023-11-12 02:17:17,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:17,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 963 transitions. [2023-11-12 02:17:17,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.5) internal successors, (963), 6 states have internal predecessors, (963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,650 INFO L175 Difference]: Start difference. First operand has 68 places, 96 transitions, 489 flow. Second operand 6 states and 963 transitions. [2023-11-12 02:17:17,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 172 transitions, 1101 flow [2023-11-12 02:17:17,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 172 transitions, 1081 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:17,704 INFO L231 Difference]: Finished difference. Result has 73 places, 126 transitions, 875 flow [2023-11-12 02:17:17,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=875, PETRI_PLACES=73, PETRI_TRANSITIONS=126} [2023-11-12 02:17:17,705 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 9 predicate places. [2023-11-12 02:17:17,705 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 126 transitions, 875 flow [2023-11-12 02:17:17,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:17,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:17,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:17:17,707 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:17,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1399453510, now seen corresponding path program 5 times [2023-11-12 02:17:17,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:17,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959783851] [2023-11-12 02:17:17,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:17,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:17,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:17,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:17,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959783851] [2023-11-12 02:17:17,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959783851] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:17,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:17,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:17,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650730114] [2023-11-12 02:17:17,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:17,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:17,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:17,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:17,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 126 transitions, 875 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:17,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:17,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:17,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:18,977 INFO L124 PetriNetUnfolderBase]: 5136/8788 cut-off events. [2023-11-12 02:17:18,978 INFO L125 PetriNetUnfolderBase]: For 16038/16946 co-relation queries the response was YES. [2023-11-12 02:17:19,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29639 conditions, 8788 events. 5136/8788 cut-off events. For 16038/16946 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 62272 event pairs, 1245 based on Foata normal form. 388/9026 useless extension candidates. Maximal degree in co-relation 29626. Up to 6414 conditions per place. [2023-11-12 02:17:19,072 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 108 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2023-11-12 02:17:19,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 169 transitions, 1399 flow [2023-11-12 02:17:19,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:19,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:17:19,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-11-12 02:17:19,076 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4891640866873065 [2023-11-12 02:17:19,076 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-11-12 02:17:19,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-11-12 02:17:19,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:19,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-11-12 02:17:19,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:19,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:19,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:19,087 INFO L175 Difference]: Start difference. First operand has 73 places, 126 transitions, 875 flow. Second operand 5 states and 790 transitions. [2023-11-12 02:17:19,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 169 transitions, 1399 flow [2023-11-12 02:17:19,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 169 transitions, 1390 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:19,136 INFO L231 Difference]: Finished difference. Result has 78 places, 137 transitions, 1107 flow [2023-11-12 02:17:19,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=866, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1107, PETRI_PLACES=78, PETRI_TRANSITIONS=137} [2023-11-12 02:17:19,138 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 14 predicate places. [2023-11-12 02:17:19,138 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 137 transitions, 1107 flow [2023-11-12 02:17:19,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:19,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:19,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:19,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:17:19,140 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:19,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:19,140 INFO L85 PathProgramCache]: Analyzing trace with hash 509966426, now seen corresponding path program 6 times [2023-11-12 02:17:19,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:19,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613601249] [2023-11-12 02:17:19,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:19,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:19,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:19,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:19,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613601249] [2023-11-12 02:17:19,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613601249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:19,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:19,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:19,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048933037] [2023-11-12 02:17:19,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:19,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:19,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:19,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:19,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:19,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:19,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 137 transitions, 1107 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:19,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:19,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:19,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:20,253 INFO L124 PetriNetUnfolderBase]: 4753/8139 cut-off events. [2023-11-12 02:17:20,253 INFO L125 PetriNetUnfolderBase]: For 16726/17798 co-relation queries the response was YES. [2023-11-12 02:17:20,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28330 conditions, 8139 events. 4753/8139 cut-off events. For 16726/17798 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 56948 event pairs, 1453 based on Foata normal form. 358/8319 useless extension candidates. Maximal degree in co-relation 28314. Up to 6085 conditions per place. [2023-11-12 02:17:20,319 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 106 selfloop transitions, 48 changer transitions 5/177 dead transitions. [2023-11-12 02:17:20,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 177 transitions, 1646 flow [2023-11-12 02:17:20,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:17:20,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 792 transitions. [2023-11-12 02:17:20,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4904024767801858 [2023-11-12 02:17:20,323 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 792 transitions. [2023-11-12 02:17:20,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 792 transitions. [2023-11-12 02:17:20,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:20,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 792 transitions. [2023-11-12 02:17:20,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.4) internal successors, (792), 5 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,331 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,331 INFO L175 Difference]: Start difference. First operand has 78 places, 137 transitions, 1107 flow. Second operand 5 states and 792 transitions. [2023-11-12 02:17:20,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 177 transitions, 1646 flow [2023-11-12 02:17:20,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 177 transitions, 1599 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:20,369 INFO L231 Difference]: Finished difference. Result has 82 places, 144 transitions, 1295 flow [2023-11-12 02:17:20,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1295, PETRI_PLACES=82, PETRI_TRANSITIONS=144} [2023-11-12 02:17:20,370 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 18 predicate places. [2023-11-12 02:17:20,370 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 144 transitions, 1295 flow [2023-11-12 02:17:20,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:20,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:20,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:17:20,371 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:20,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:20,372 INFO L85 PathProgramCache]: Analyzing trace with hash -148006768, now seen corresponding path program 7 times [2023-11-12 02:17:20,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:20,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465807919] [2023-11-12 02:17:20,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:20,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:20,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:20,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:20,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465807919] [2023-11-12 02:17:20,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465807919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:20,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:20,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:17:20,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954310254] [2023-11-12 02:17:20,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:20,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:20,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:20,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:20,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:20,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:20,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 144 transitions, 1295 flow. Second operand has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:20,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:20,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:20,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:21,347 INFO L124 PetriNetUnfolderBase]: 3039/5546 cut-off events. [2023-11-12 02:17:21,347 INFO L125 PetriNetUnfolderBase]: For 11268/11986 co-relation queries the response was YES. [2023-11-12 02:17:21,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19175 conditions, 5546 events. 3039/5546 cut-off events. For 11268/11986 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 38263 event pairs, 928 based on Foata normal form. 234/5642 useless extension candidates. Maximal degree in co-relation 19157. Up to 4154 conditions per place. [2023-11-12 02:17:21,399 INFO L140 encePairwiseOnDemand]: 314/323 looper letters, 104 selfloop transitions, 40 changer transitions 0/158 dead transitions. [2023-11-12 02:17:21,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 158 transitions, 1547 flow [2023-11-12 02:17:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:17:21,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:17:21,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 787 transitions. [2023-11-12 02:17:21,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4873065015479876 [2023-11-12 02:17:21,403 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 787 transitions. [2023-11-12 02:17:21,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 787 transitions. [2023-11-12 02:17:21,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:21,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 787 transitions. [2023-11-12 02:17:21,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 157.4) internal successors, (787), 5 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:21,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:21,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 323.0) internal successors, (1938), 6 states have internal predecessors, (1938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:21,411 INFO L175 Difference]: Start difference. First operand has 82 places, 144 transitions, 1295 flow. Second operand 5 states and 787 transitions. [2023-11-12 02:17:21,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 158 transitions, 1547 flow [2023-11-12 02:17:21,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 158 transitions, 1507 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-12 02:17:21,451 INFO L231 Difference]: Finished difference. Result has 84 places, 134 transitions, 1254 flow [2023-11-12 02:17:21,451 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1254, PETRI_PLACES=84, PETRI_TRANSITIONS=134} [2023-11-12 02:17:21,452 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 20 predicate places. [2023-11-12 02:17:21,452 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 134 transitions, 1254 flow [2023-11-12 02:17:21,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 149.8) internal successors, (749), 5 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:21,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:21,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:21,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:17:21,454 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:21,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:21,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1196523852, now seen corresponding path program 8 times [2023-11-12 02:17:21,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981027521] [2023-11-12 02:17:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:21,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:21,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:21,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:21,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:21,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981027521] [2023-11-12 02:17:21,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981027521] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:21,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:21,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:21,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729085739] [2023-11-12 02:17:21,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:21,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:21,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:21,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:21,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:21,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:21,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 134 transitions, 1254 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:21,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:21,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:21,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:22,457 INFO L124 PetriNetUnfolderBase]: 3035/5560 cut-off events. [2023-11-12 02:17:22,457 INFO L125 PetriNetUnfolderBase]: For 12229/13283 co-relation queries the response was YES. [2023-11-12 02:17:22,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19716 conditions, 5560 events. 3035/5560 cut-off events. For 12229/13283 co-relation queries the response was YES. Maximal size of possible extension queue 315. Compared 38868 event pairs, 498 based on Foata normal form. 580/5962 useless extension candidates. Maximal degree in co-relation 19697. Up to 2476 conditions per place. [2023-11-12 02:17:22,500 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 98 selfloop transitions, 77 changer transitions 1/190 dead transitions. [2023-11-12 02:17:22,501 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 190 transitions, 1866 flow [2023-11-12 02:17:22,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:22,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:17:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 960 transitions. [2023-11-12 02:17:22,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953560371517028 [2023-11-12 02:17:22,505 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 960 transitions. [2023-11-12 02:17:22,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 960 transitions. [2023-11-12 02:17:22,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:22,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 960 transitions. [2023-11-12 02:17:22,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.0) internal successors, (960), 6 states have internal predecessors, (960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,515 INFO L175 Difference]: Start difference. First operand has 84 places, 134 transitions, 1254 flow. Second operand 6 states and 960 transitions. [2023-11-12 02:17:22,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 190 transitions, 1866 flow [2023-11-12 02:17:22,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 190 transitions, 1828 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:22,554 INFO L231 Difference]: Finished difference. Result has 88 places, 140 transitions, 1451 flow [2023-11-12 02:17:22,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1451, PETRI_PLACES=88, PETRI_TRANSITIONS=140} [2023-11-12 02:17:22,555 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 24 predicate places. [2023-11-12 02:17:22,555 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 140 transitions, 1451 flow [2023-11-12 02:17:22,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,557 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:22,557 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:22,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-12 02:17:22,557 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:22,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:22,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1524647142, now seen corresponding path program 9 times [2023-11-12 02:17:22,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:22,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474783880] [2023-11-12 02:17:22,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:22,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:22,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:22,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474783880] [2023-11-12 02:17:22,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474783880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970038160] [2023-11-12 02:17:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:22,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:17:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:22,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:17:22,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:17:22,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:22,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 140 transitions, 1451 flow. Second operand has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:22,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:22,731 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:22,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:23,645 INFO L124 PetriNetUnfolderBase]: 3007/5598 cut-off events. [2023-11-12 02:17:23,645 INFO L125 PetriNetUnfolderBase]: For 16754/17870 co-relation queries the response was YES. [2023-11-12 02:17:23,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21133 conditions, 5598 events. 3007/5598 cut-off events. For 16754/17870 co-relation queries the response was YES. Maximal size of possible extension queue 326. Compared 39803 event pairs, 467 based on Foata normal form. 662/6062 useless extension candidates. Maximal degree in co-relation 21113. Up to 2475 conditions per place. [2023-11-12 02:17:23,690 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 100 selfloop transitions, 82 changer transitions 2/198 dead transitions. [2023-11-12 02:17:23,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 198 transitions, 2102 flow [2023-11-12 02:17:23,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:23,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:17:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 962 transitions. [2023-11-12 02:17:23,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49638802889576883 [2023-11-12 02:17:23,694 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 962 transitions. [2023-11-12 02:17:23,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 962 transitions. [2023-11-12 02:17:23,695 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:23,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 962 transitions. [2023-11-12 02:17:23,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,702 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 323.0) internal successors, (2261), 7 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,702 INFO L175 Difference]: Start difference. First operand has 88 places, 140 transitions, 1451 flow. Second operand 6 states and 962 transitions. [2023-11-12 02:17:23,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 198 transitions, 2102 flow [2023-11-12 02:17:23,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 198 transitions, 1979 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:23,745 INFO L231 Difference]: Finished difference. Result has 90 places, 145 transitions, 1582 flow [2023-11-12 02:17:23,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1342, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1582, PETRI_PLACES=90, PETRI_TRANSITIONS=145} [2023-11-12 02:17:23,746 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 26 predicate places. [2023-11-12 02:17:23,746 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 145 transitions, 1582 flow [2023-11-12 02:17:23,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 148.83333333333334) internal successors, (893), 6 states have internal predecessors, (893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:23,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:23,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-12 02:17:23,747 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:23,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 279306082, now seen corresponding path program 10 times [2023-11-12 02:17:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:23,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537405946] [2023-11-12 02:17:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:23,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:23,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:23,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:23,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537405946] [2023-11-12 02:17:23,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537405946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:23,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:23,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:23,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088694607] [2023-11-12 02:17:23,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:23,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:23,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:23,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:23,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 145 transitions, 1582 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:23,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:23,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:23,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:25,078 INFO L124 PetriNetUnfolderBase]: 3048/5751 cut-off events. [2023-11-12 02:17:25,078 INFO L125 PetriNetUnfolderBase]: For 20168/21212 co-relation queries the response was YES. [2023-11-12 02:17:25,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21963 conditions, 5751 events. 3048/5751 cut-off events. For 20168/21212 co-relation queries the response was YES. Maximal size of possible extension queue 342. Compared 42094 event pairs, 505 based on Foata normal form. 650/6213 useless extension candidates. Maximal degree in co-relation 21943. Up to 2477 conditions per place. [2023-11-12 02:17:25,120 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 117 selfloop transitions, 89 changer transitions 4/224 dead transitions. [2023-11-12 02:17:25,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 224 transitions, 2380 flow [2023-11-12 02:17:25,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:25,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1279 transitions. [2023-11-12 02:17:25,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.494969040247678 [2023-11-12 02:17:25,126 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1279 transitions. [2023-11-12 02:17:25,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1279 transitions. [2023-11-12 02:17:25,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:25,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1279 transitions. [2023-11-12 02:17:25,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.875) internal successors, (1279), 8 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,137 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,138 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,138 INFO L175 Difference]: Start difference. First operand has 90 places, 145 transitions, 1582 flow. Second operand 8 states and 1279 transitions. [2023-11-12 02:17:25,138 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 224 transitions, 2380 flow [2023-11-12 02:17:25,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 224 transitions, 2230 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:25,193 INFO L231 Difference]: Finished difference. Result has 94 places, 152 transitions, 1731 flow [2023-11-12 02:17:25,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1452, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1731, PETRI_PLACES=94, PETRI_TRANSITIONS=152} [2023-11-12 02:17:25,194 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 30 predicate places. [2023-11-12 02:17:25,194 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 152 transitions, 1731 flow [2023-11-12 02:17:25,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:25,195 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:25,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-12 02:17:25,196 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:25,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:25,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1257880424, now seen corresponding path program 11 times [2023-11-12 02:17:25,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:25,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376594219] [2023-11-12 02:17:25,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:25,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:25,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:25,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376594219] [2023-11-12 02:17:25,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376594219] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:25,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:25,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:25,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915023684] [2023-11-12 02:17:25,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:25,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:25,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:25,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:25,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:25,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:25,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 152 transitions, 1731 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:25,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:25,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:25,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:26,645 INFO L124 PetriNetUnfolderBase]: 3016/5725 cut-off events. [2023-11-12 02:17:26,645 INFO L125 PetriNetUnfolderBase]: For 22116/23236 co-relation queries the response was YES. [2023-11-12 02:17:26,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22293 conditions, 5725 events. 3016/5725 cut-off events. For 22116/23236 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 42022 event pairs, 546 based on Foata normal form. 614/6155 useless extension candidates. Maximal degree in co-relation 22273. Up to 2455 conditions per place. [2023-11-12 02:17:26,702 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 110 selfloop transitions, 102 changer transitions 7/233 dead transitions. [2023-11-12 02:17:26,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 233 transitions, 2704 flow [2023-11-12 02:17:26,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:26,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:26,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1273 transitions. [2023-11-12 02:17:26,708 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2023-11-12 02:17:26,708 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1273 transitions. [2023-11-12 02:17:26,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1273 transitions. [2023-11-12 02:17:26,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:26,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1273 transitions. [2023-11-12 02:17:26,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.125) internal successors, (1273), 8 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,720 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,720 INFO L175 Difference]: Start difference. First operand has 94 places, 152 transitions, 1731 flow. Second operand 8 states and 1273 transitions. [2023-11-12 02:17:26,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 233 transitions, 2704 flow [2023-11-12 02:17:26,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 233 transitions, 2480 flow, removed 3 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:26,786 INFO L231 Difference]: Finished difference. Result has 98 places, 165 transitions, 1941 flow [2023-11-12 02:17:26,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1941, PETRI_PLACES=98, PETRI_TRANSITIONS=165} [2023-11-12 02:17:26,787 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 34 predicate places. [2023-11-12 02:17:26,787 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 165 transitions, 1941 flow [2023-11-12 02:17:26,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:26,789 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:26,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-12 02:17:26,789 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:26,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:26,790 INFO L85 PathProgramCache]: Analyzing trace with hash -640957598, now seen corresponding path program 12 times [2023-11-12 02:17:26,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:26,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932761227] [2023-11-12 02:17:26,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:26,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:26,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:26,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:26,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932761227] [2023-11-12 02:17:26,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932761227] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:26,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:26,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:26,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975657944] [2023-11-12 02:17:26,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:26,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:26,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:26,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:26,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:26,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:26,991 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 165 transitions, 1941 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:26,991 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:26,991 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:26,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:27,992 INFO L124 PetriNetUnfolderBase]: 2983/5710 cut-off events. [2023-11-12 02:17:27,992 INFO L125 PetriNetUnfolderBase]: For 23376/24342 co-relation queries the response was YES. [2023-11-12 02:17:28,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22615 conditions, 5710 events. 2983/5710 cut-off events. For 23376/24342 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 42247 event pairs, 508 based on Foata normal form. 456/5962 useless extension candidates. Maximal degree in co-relation 22593. Up to 1577 conditions per place. [2023-11-12 02:17:28,039 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 84 selfloop transitions, 128 changer transitions 2/228 dead transitions. [2023-11-12 02:17:28,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 228 transitions, 2651 flow [2023-11-12 02:17:28,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:28,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:28,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1273 transitions. [2023-11-12 02:17:28,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49264705882352944 [2023-11-12 02:17:28,045 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1273 transitions. [2023-11-12 02:17:28,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1273 transitions. [2023-11-12 02:17:28,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:28,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1273 transitions. [2023-11-12 02:17:28,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.125) internal successors, (1273), 8 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,056 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,056 INFO L175 Difference]: Start difference. First operand has 98 places, 165 transitions, 1941 flow. Second operand 8 states and 1273 transitions. [2023-11-12 02:17:28,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 228 transitions, 2651 flow [2023-11-12 02:17:28,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 228 transitions, 2623 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:28,126 INFO L231 Difference]: Finished difference. Result has 104 places, 173 transitions, 2255 flow [2023-11-12 02:17:28,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=1913, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2255, PETRI_PLACES=104, PETRI_TRANSITIONS=173} [2023-11-12 02:17:28,127 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 40 predicate places. [2023-11-12 02:17:28,127 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 173 transitions, 2255 flow [2023-11-12 02:17:28,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:28,128 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:28,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-12 02:17:28,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:28,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:28,129 INFO L85 PathProgramCache]: Analyzing trace with hash -577422942, now seen corresponding path program 13 times [2023-11-12 02:17:28,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:28,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045620028] [2023-11-12 02:17:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:28,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:28,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:28,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:28,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:28,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045620028] [2023-11-12 02:17:28,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045620028] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:28,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:28,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:28,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980206968] [2023-11-12 02:17:28,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:28,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:28,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:28,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:28,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:28,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 173 transitions, 2255 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:28,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:28,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:28,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:29,443 INFO L124 PetriNetUnfolderBase]: 3212/6196 cut-off events. [2023-11-12 02:17:29,443 INFO L125 PetriNetUnfolderBase]: For 30119/31233 co-relation queries the response was YES. [2023-11-12 02:17:29,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25483 conditions, 6196 events. 3212/6196 cut-off events. For 30119/31233 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 47121 event pairs, 215 based on Foata normal form. 516/6522 useless extension candidates. Maximal degree in co-relation 25460. Up to 1904 conditions per place. [2023-11-12 02:17:29,489 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 103 selfloop transitions, 141 changer transitions 4/262 dead transitions. [2023-11-12 02:17:29,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 262 transitions, 3093 flow [2023-11-12 02:17:29,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:29,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:29,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1127 transitions. [2023-11-12 02:17:29,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4984520123839009 [2023-11-12 02:17:29,494 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1127 transitions. [2023-11-12 02:17:29,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1127 transitions. [2023-11-12 02:17:29,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:29,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1127 transitions. [2023-11-12 02:17:29,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 161.0) internal successors, (1127), 7 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,502 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,502 INFO L175 Difference]: Start difference. First operand has 104 places, 173 transitions, 2255 flow. Second operand 7 states and 1127 transitions. [2023-11-12 02:17:29,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 262 transitions, 3093 flow [2023-11-12 02:17:29,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 262 transitions, 2840 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:29,575 INFO L231 Difference]: Finished difference. Result has 108 places, 197 transitions, 2611 flow [2023-11-12 02:17:29,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=2002, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2611, PETRI_PLACES=108, PETRI_TRANSITIONS=197} [2023-11-12 02:17:29,577 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 44 predicate places. [2023-11-12 02:17:29,577 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 197 transitions, 2611 flow [2023-11-12 02:17:29,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:29,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:29,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-12 02:17:29,578 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:29,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -497016862, now seen corresponding path program 14 times [2023-11-12 02:17:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:29,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794528717] [2023-11-12 02:17:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:29,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:29,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:29,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:29,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794528717] [2023-11-12 02:17:29,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794528717] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:29,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:29,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:29,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320908723] [2023-11-12 02:17:29,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:29,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:29,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:29,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:29,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 197 transitions, 2611 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:29,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:29,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:29,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:30,635 INFO L124 PetriNetUnfolderBase]: 2554/5033 cut-off events. [2023-11-12 02:17:30,635 INFO L125 PetriNetUnfolderBase]: For 29776/30696 co-relation queries the response was YES. [2023-11-12 02:17:30,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22846 conditions, 5033 events. 2554/5033 cut-off events. For 29776/30696 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 37045 event pairs, 416 based on Foata normal form. 538/5487 useless extension candidates. Maximal degree in co-relation 22820. Up to 2447 conditions per place. [2023-11-12 02:17:30,686 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 132 selfloop transitions, 115 changer transitions 22/283 dead transitions. [2023-11-12 02:17:30,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 283 transitions, 3970 flow [2023-11-12 02:17:30,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:30,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:30,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1270 transitions. [2023-11-12 02:17:30,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4914860681114551 [2023-11-12 02:17:30,689 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1270 transitions. [2023-11-12 02:17:30,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1270 transitions. [2023-11-12 02:17:30,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:30,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1270 transitions. [2023-11-12 02:17:30,692 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.75) internal successors, (1270), 8 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:30,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:30,698 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 323.0) internal successors, (2907), 9 states have internal predecessors, (2907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:30,698 INFO L175 Difference]: Start difference. First operand has 108 places, 197 transitions, 2611 flow. Second operand 8 states and 1270 transitions. [2023-11-12 02:17:30,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 283 transitions, 3970 flow [2023-11-12 02:17:30,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 283 transitions, 3890 flow, removed 18 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:30,826 INFO L231 Difference]: Finished difference. Result has 116 places, 207 transitions, 3061 flow [2023-11-12 02:17:30,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=2524, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3061, PETRI_PLACES=116, PETRI_TRANSITIONS=207} [2023-11-12 02:17:30,827 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 52 predicate places. [2023-11-12 02:17:30,828 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 207 transitions, 3061 flow [2023-11-12 02:17:30,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:30,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:30,828 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:30,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-12 02:17:30,829 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:30,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:30,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1497317580, now seen corresponding path program 15 times [2023-11-12 02:17:30,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:30,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644870351] [2023-11-12 02:17:30,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:30,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:30,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:30,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:30,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:30,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644870351] [2023-11-12 02:17:30,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644870351] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:30,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:30,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:30,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078605697] [2023-11-12 02:17:30,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:30,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:30,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:30,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:31,005 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:31,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 207 transitions, 3061 flow. Second operand has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:31,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:31,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:31,924 INFO L124 PetriNetUnfolderBase]: 2323/4648 cut-off events. [2023-11-12 02:17:31,925 INFO L125 PetriNetUnfolderBase]: For 32661/33624 co-relation queries the response was YES. [2023-11-12 02:17:31,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22423 conditions, 4648 events. 2323/4648 cut-off events. For 32661/33624 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 34541 event pairs, 163 based on Foata normal form. 450/5023 useless extension candidates. Maximal degree in co-relation 22394. Up to 1378 conditions per place. [2023-11-12 02:17:31,963 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 98 selfloop transitions, 159 changer transitions 8/279 dead transitions. [2023-11-12 02:17:31,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 279 transitions, 4007 flow [2023-11-12 02:17:31,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:31,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:31,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1123 transitions. [2023-11-12 02:17:31,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4966828836797877 [2023-11-12 02:17:31,966 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1123 transitions. [2023-11-12 02:17:31,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1123 transitions. [2023-11-12 02:17:31,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:31,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1123 transitions. [2023-11-12 02:17:31,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 160.42857142857142) internal successors, (1123), 7 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,973 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 323.0) internal successors, (2584), 8 states have internal predecessors, (2584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:31,973 INFO L175 Difference]: Start difference. First operand has 116 places, 207 transitions, 3061 flow. Second operand 7 states and 1123 transitions. [2023-11-12 02:17:31,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 279 transitions, 4007 flow [2023-11-12 02:17:32,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 279 transitions, 3941 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-12 02:17:32,080 INFO L231 Difference]: Finished difference. Result has 120 places, 213 transitions, 3413 flow [2023-11-12 02:17:32,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3001, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3413, PETRI_PLACES=120, PETRI_TRANSITIONS=213} [2023-11-12 02:17:32,081 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 56 predicate places. [2023-11-12 02:17:32,081 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 213 transitions, 3413 flow [2023-11-12 02:17:32,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.14285714285714) internal successors, (1037), 7 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:32,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:32,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-12 02:17:32,082 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:32,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:32,083 INFO L85 PathProgramCache]: Analyzing trace with hash 610912884, now seen corresponding path program 16 times [2023-11-12 02:17:32,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:32,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615555374] [2023-11-12 02:17:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:32,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:32,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:32,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:32,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:32,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615555374] [2023-11-12 02:17:32,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615555374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:32,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:32,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-12 02:17:32,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334408245] [2023-11-12 02:17:32,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:32,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:32,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:32,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:32,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:32,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:32,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 213 transitions, 3413 flow. Second operand has 8 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:32,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:32,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:32,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:33,359 INFO L124 PetriNetUnfolderBase]: 2256/4559 cut-off events. [2023-11-12 02:17:33,360 INFO L125 PetriNetUnfolderBase]: For 38008/38760 co-relation queries the response was YES. [2023-11-12 02:17:33,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23257 conditions, 4559 events. 2256/4559 cut-off events. For 38008/38760 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 33789 event pairs, 364 based on Foata normal form. 200/4686 useless extension candidates. Maximal degree in co-relation 23228. Up to 1744 conditions per place. [2023-11-12 02:17:33,401 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 114 selfloop transitions, 138 changer transitions 9/275 dead transitions. [2023-11-12 02:17:33,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 275 transitions, 4317 flow [2023-11-12 02:17:33,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:17:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:17:33,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1423 transitions. [2023-11-12 02:17:33,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4895080839353285 [2023-11-12 02:17:33,404 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1423 transitions. [2023-11-12 02:17:33,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1423 transitions. [2023-11-12 02:17:33,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:33,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1423 transitions. [2023-11-12 02:17:33,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 158.11111111111111) internal successors, (1423), 9 states have internal predecessors, (1423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,412 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,413 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 323.0) internal successors, (3230), 10 states have internal predecessors, (3230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,413 INFO L175 Difference]: Start difference. First operand has 120 places, 213 transitions, 3413 flow. Second operand 9 states and 1423 transitions. [2023-11-12 02:17:33,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 275 transitions, 4317 flow [2023-11-12 02:17:33,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 275 transitions, 4059 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:33,534 INFO L231 Difference]: Finished difference. Result has 124 places, 211 transitions, 3431 flow [2023-11-12 02:17:33,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3175, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3431, PETRI_PLACES=124, PETRI_TRANSITIONS=211} [2023-11-12 02:17:33,535 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 60 predicate places. [2023-11-12 02:17:33,535 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 211 transitions, 3431 flow [2023-11-12 02:17:33,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 147.625) internal successors, (1181), 8 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:33,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:33,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-12 02:17:33,536 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:33,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:33,536 INFO L85 PathProgramCache]: Analyzing trace with hash 466414502, now seen corresponding path program 17 times [2023-11-12 02:17:33,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:33,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930947781] [2023-11-12 02:17:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:33,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:33,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:33,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:33,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930947781] [2023-11-12 02:17:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930947781] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:33,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:17:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442310496] [2023-11-12 02:17:33,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:17:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:17:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:17:33,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:33,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 211 transitions, 3431 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:33,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:33,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:33,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:35,035 INFO L124 PetriNetUnfolderBase]: 2236/4551 cut-off events. [2023-11-12 02:17:35,035 INFO L125 PetriNetUnfolderBase]: For 38273/39025 co-relation queries the response was YES. [2023-11-12 02:17:35,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22889 conditions, 4551 events. 2236/4551 cut-off events. For 38273/39025 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 34008 event pairs, 366 based on Foata normal form. 200/4678 useless extension candidates. Maximal degree in co-relation 22860. Up to 1742 conditions per place. [2023-11-12 02:17:35,091 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 122 selfloop transitions, 140 changer transitions 10/286 dead transitions. [2023-11-12 02:17:35,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 286 transitions, 4408 flow [2023-11-12 02:17:35,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:17:35,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:17:35,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1873 transitions. [2023-11-12 02:17:35,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48323013415892674 [2023-11-12 02:17:35,095 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1873 transitions. [2023-11-12 02:17:35,095 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1873 transitions. [2023-11-12 02:17:35,096 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:35,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1873 transitions. [2023-11-12 02:17:35,099 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.08333333333334) internal successors, (1873), 12 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:35,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:35,106 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:35,106 INFO L175 Difference]: Start difference. First operand has 124 places, 211 transitions, 3431 flow. Second operand 12 states and 1873 transitions. [2023-11-12 02:17:35,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 286 transitions, 4408 flow [2023-11-12 02:17:35,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 286 transitions, 4266 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:35,248 INFO L231 Difference]: Finished difference. Result has 131 places, 213 transitions, 3580 flow [2023-11-12 02:17:35,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3580, PETRI_PLACES=131, PETRI_TRANSITIONS=213} [2023-11-12 02:17:35,249 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 67 predicate places. [2023-11-12 02:17:35,249 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 213 transitions, 3580 flow [2023-11-12 02:17:35,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:35,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:35,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:35,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-12 02:17:35,250 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:35,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:35,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1642603494, now seen corresponding path program 18 times [2023-11-12 02:17:35,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:35,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756932174] [2023-11-12 02:17:35,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:35,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:35,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:35,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:35,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756932174] [2023-11-12 02:17:35,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756932174] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:35,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:35,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:17:35,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94869292] [2023-11-12 02:17:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:35,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:17:35,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:35,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:17:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:17:35,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:35,448 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 213 transitions, 3580 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:35,448 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:35,448 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:35,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:36,632 INFO L124 PetriNetUnfolderBase]: 2306/4720 cut-off events. [2023-11-12 02:17:36,632 INFO L125 PetriNetUnfolderBase]: For 44062/44836 co-relation queries the response was YES. [2023-11-12 02:17:36,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24080 conditions, 4720 events. 2306/4720 cut-off events. For 44062/44836 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 35871 event pairs, 376 based on Foata normal form. 256/4901 useless extension candidates. Maximal degree in co-relation 24052. Up to 1741 conditions per place. [2023-11-12 02:17:36,664 INFO L140 encePairwiseOnDemand]: 313/323 looper letters, 109 selfloop transitions, 117 changer transitions 67/307 dead transitions. [2023-11-12 02:17:36,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 307 transitions, 4991 flow [2023-11-12 02:17:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:17:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:17:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1876 transitions. [2023-11-12 02:17:36,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4840041279669763 [2023-11-12 02:17:36,667 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1876 transitions. [2023-11-12 02:17:36,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1876 transitions. [2023-11-12 02:17:36,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:36,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1876 transitions. [2023-11-12 02:17:36,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 156.33333333333334) internal successors, (1876), 12 states have internal predecessors, (1876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:36,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:36,675 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 323.0) internal successors, (4199), 13 states have internal predecessors, (4199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:36,675 INFO L175 Difference]: Start difference. First operand has 131 places, 213 transitions, 3580 flow. Second operand 12 states and 1876 transitions. [2023-11-12 02:17:36,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 307 transitions, 4991 flow [2023-11-12 02:17:36,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 307 transitions, 4656 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-11-12 02:17:36,791 INFO L231 Difference]: Finished difference. Result has 135 places, 190 transitions, 3044 flow [2023-11-12 02:17:36,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=323, PETRI_DIFFERENCE_MINUEND_FLOW=3298, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3044, PETRI_PLACES=135, PETRI_TRANSITIONS=190} [2023-11-12 02:17:36,792 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 71 predicate places. [2023-11-12 02:17:36,792 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 190 transitions, 3044 flow [2023-11-12 02:17:36,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:36,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:36,793 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:36,793 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-12 02:17:36,793 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 19 more)] === [2023-11-12 02:17:36,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:36,793 INFO L85 PathProgramCache]: Analyzing trace with hash -872820880, now seen corresponding path program 19 times [2023-11-12 02:17:36,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:36,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199099941] [2023-11-12 02:17:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:36,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:36,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:36,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199099941] [2023-11-12 02:17:36,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199099941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:36,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:36,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:17:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009532823] [2023-11-12 02:17:36,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:36,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:17:36,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:36,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:17:36,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:17:36,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 323 [2023-11-12 02:17:36,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 190 transitions, 3044 flow. Second operand has 9 states, 9 states have (on average 147.22222222222223) internal successors, (1325), 9 states have internal predecessors, (1325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:17:36,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:36,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 323 [2023-11-12 02:17:36,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand