./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/singleton.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx --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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:11:49,993 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:11:50,090 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:11:50,096 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:11:50,097 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:11:50,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:11:50,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:11:50,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:11:50,122 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:11:50,122 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:11:50,123 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:11:50,124 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:11:50,125 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:11:50,125 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:11:50,126 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:11:50,127 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:11:50,130 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:11:50,131 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:11:50,132 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:11:50,132 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:11:50,136 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:11:50,137 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:11:50,138 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:11:50,138 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:11:50,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:11:50,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:11:50,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:11:50,140 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:11:50,140 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:11:50,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:11:50,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:50,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:11:50,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:11:50,143 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:11:50,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:11:50,145 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:11:50,145 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:11:50,145 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:11:50,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:11:50,146 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_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2023-11-21 22:11:50,459 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:11:50,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:11:50,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:11:50,500 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:11:50,500 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:11:50,502 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/singleton.i [2023-11-21 22:11:53,588 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:11:53,961 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:11:53,962 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/sv-benchmarks/c/pthread/singleton.i [2023-11-21 22:11:53,989 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data/bb67689f3/a756425faadb4b7193c3eb1a7c65cd6f/FLAG0f8f76dfd [2023-11-21 22:11:54,009 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data/bb67689f3/a756425faadb4b7193c3eb1a7c65cd6f [2023-11-21 22:11:54,011 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:11:54,013 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:11:54,014 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:54,014 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:11:54,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:11:54,023 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:54" (1/1) ... [2023-11-21 22:11:54,024 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@472939cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:54, skipping insertion in model container [2023-11-21 22:11:54,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:11:54" (1/1) ... [2023-11-21 22:11:54,081 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:11:54,392 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:11:54,829 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:11:54,842 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:11:54,861 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-21 22:11:54,900 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:11:54,992 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:11:54,992 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:11:54,992 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:11:55,001 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:11:55,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55 WrapperNode [2023-11-21 22:11:55,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:11:55,003 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:11:55,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:11:55,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:11:55,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,037 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,064 INFO L138 Inliner]: procedures = 325, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 37 [2023-11-21 22:11:55,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:11:55,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:11:55,066 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:11:55,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:11:55,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,082 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,087 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,087 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,104 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,107 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,109 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,115 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:11:55,116 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:11:55,116 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:11:55,117 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:11:55,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (1/1) ... [2023-11-21 22:11:55,123 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:11:55,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:11:55,158 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:11:55,195 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:11:55,208 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:11:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:11:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:11:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:11:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:11:55,209 INFO L130 BoogieDeclarations]: Found specification of procedure thread0 [2023-11-21 22:11:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread0 [2023-11-21 22:11:55,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-21 22:11:55,210 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-21 22:11:55,210 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-21 22:11:55,212 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-21 22:11:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-21 22:11:55,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-21 22:11:55,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:11:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:11:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:11:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:11:55,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:11:55,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:11:55,217 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:11:55,414 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:11:55,417 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:11:55,808 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:11:56,006 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:11:56,007 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:11:56,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:11:56 BoogieIcfgContainer [2023-11-21 22:11:56,009 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:11:56,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:11:56,013 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:11:56,015 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:11:56,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:11:54" (1/3) ... [2023-11-21 22:11:56,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:11:56, skipping insertion in model container [2023-11-21 22:11:56,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:11:55" (2/3) ... [2023-11-21 22:11:56,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@174f99b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:11:56, skipping insertion in model container [2023-11-21 22:11:56,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:11:56" (3/3) ... [2023-11-21 22:11:56,019 INFO L112 eAbstractionObserver]: Analyzing ICFG singleton.i [2023-11-21 22:11:56,037 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:11:56,037 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-21 22:11:56,037 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:11:56,279 INFO L144 ThreadInstanceAdder]: Constructed 21 joinOtherThreadTransitions. [2023-11-21 22:11:56,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 156 transitions, 409 flow [2023-11-21 22:11:56,375 INFO L124 PetriNetUnfolderBase]: 7/101 cut-off events. [2023-11-21 22:11:56,376 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-21 22:11:56,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 101 events. 7/101 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 101. Up to 3 conditions per place. [2023-11-21 22:11:56,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 156 transitions, 409 flow [2023-11-21 22:11:56,391 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 100 transitions, 251 flow [2023-11-21 22:11:56,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:11:56,423 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;@34b3a72b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:11:56,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 71 error locations. [2023-11-21 22:11:56,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:11:56,428 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:11:56,428 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:11:56,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:11:56,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:11:56,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:11:56,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:11:56,437 INFO L85 PathProgramCache]: Analyzing trace with hash 9778, now seen corresponding path program 1 times [2023-11-21 22:11:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:11:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289049343] [2023-11-21 22:11:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:11:56,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:11:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:11:56,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:11:56,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:11:56,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289049343] [2023-11-21 22:11:56,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289049343] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:11:56,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:11:56,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:11:56,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636397240] [2023-11-21 22:11:56,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:11:56,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:11:56,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:11:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:11:56,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:11:56,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2023-11-21 22:11:56,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 100 transitions, 251 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:11:56,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:11:56,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2023-11-21 22:11:56,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:01,232 INFO L124 PetriNetUnfolderBase]: 17146/29858 cut-off events. [2023-11-21 22:12:01,232 INFO L125 PetriNetUnfolderBase]: For 1889/1892 co-relation queries the response was YES. [2023-11-21 22:12:01,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54086 conditions, 29858 events. 17146/29858 cut-off events. For 1889/1892 co-relation queries the response was YES. Maximal size of possible extension queue 2317. Compared 271165 event pairs, 16673 based on Foata normal form. 4/17157 useless extension candidates. Maximal degree in co-relation 54038. Up to 22322 conditions per place. [2023-11-21 22:12:01,611 INFO L140 encePairwiseOnDemand]: 150/158 looper letters, 52 selfloop transitions, 4 changer transitions 0/102 dead transitions. [2023-11-21 22:12:01,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 102 transitions, 370 flow [2023-11-21 22:12:01,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:01,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:01,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 311 transitions. [2023-11-21 22:12:01,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6561181434599156 [2023-11-21 22:12:01,633 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 311 transitions. [2023-11-21 22:12:01,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 311 transitions. [2023-11-21 22:12:01,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:01,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 311 transitions. [2023-11-21 22:12:01,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:01,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:01,651 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:01,653 INFO L175 Difference]: Start difference. First operand has 112 places, 100 transitions, 251 flow. Second operand 3 states and 311 transitions. [2023-11-21 22:12:01,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 102 transitions, 370 flow [2023-11-21 22:12:01,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 102 transitions, 334 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-11-21 22:12:01,911 INFO L231 Difference]: Finished difference. Result has 102 places, 98 transitions, 235 flow [2023-11-21 22:12:01,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=235, PETRI_PLACES=102, PETRI_TRANSITIONS=98} [2023-11-21 22:12:01,919 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -10 predicate places. [2023-11-21 22:12:01,920 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 98 transitions, 235 flow [2023-11-21 22:12:01,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:01,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:01,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:12:01,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:12:01,922 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:01,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:01,923 INFO L85 PathProgramCache]: Analyzing trace with hash 9779, now seen corresponding path program 1 times [2023-11-21 22:12:01,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:01,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027503455] [2023-11-21 22:12:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:01,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:02,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:02,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:02,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027503455] [2023-11-21 22:12:02,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027503455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:02,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:02,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:12:02,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912226219] [2023-11-21 22:12:02,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:02,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:02,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:02,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:02,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:02,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2023-11-21 22:12:02,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 98 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:02,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:02,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2023-11-21 22:12:02,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:05,235 INFO L124 PetriNetUnfolderBase]: 17142/29838 cut-off events. [2023-11-21 22:12:05,235 INFO L125 PetriNetUnfolderBase]: For 480/485 co-relation queries the response was YES. [2023-11-21 22:12:05,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52654 conditions, 29838 events. 17142/29838 cut-off events. For 480/485 co-relation queries the response was YES. Maximal size of possible extension queue 2415. Compared 271691 event pairs, 14946 based on Foata normal form. 7/17148 useless extension candidates. Maximal degree in co-relation 52589. Up to 22311 conditions per place. [2023-11-21 22:12:05,629 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/99 dead transitions. [2023-11-21 22:12:05,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 339 flow [2023-11-21 22:12:05,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:05,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:05,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-21 22:12:05,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476793248945147 [2023-11-21 22:12:05,634 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-21 22:12:05,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-21 22:12:05,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:05,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-21 22:12:05,636 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,641 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,641 INFO L175 Difference]: Start difference. First operand has 102 places, 98 transitions, 235 flow. Second operand 3 states and 307 transitions. [2023-11-21 22:12:05,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 339 flow [2023-11-21 22:12:05,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 99 transitions, 331 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:05,651 INFO L231 Difference]: Finished difference. Result has 102 places, 97 transitions, 233 flow [2023-11-21 22:12:05,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=102, PETRI_TRANSITIONS=97} [2023-11-21 22:12:05,653 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -10 predicate places. [2023-11-21 22:12:05,653 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 97 transitions, 233 flow [2023-11-21 22:12:05,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:05,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:05,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:12:05,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:12:05,657 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:05,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:05,665 INFO L85 PathProgramCache]: Analyzing trace with hash 291672140, now seen corresponding path program 1 times [2023-11-21 22:12:05,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:05,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373567375] [2023-11-21 22:12:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:05,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:06,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:06,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:06,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373567375] [2023-11-21 22:12:06,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373567375] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:06,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:06,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:06,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179274404] [2023-11-21 22:12:06,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:06,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:06,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:06,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:06,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2023-11-21 22:12:06,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 233 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:06,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:06,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2023-11-21 22:12:06,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:07,862 INFO L124 PetriNetUnfolderBase]: 10862/19344 cut-off events. [2023-11-21 22:12:07,862 INFO L125 PetriNetUnfolderBase]: For 319/321 co-relation queries the response was YES. [2023-11-21 22:12:07,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34015 conditions, 19344 events. 10862/19344 cut-off events. For 319/321 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 171090 event pairs, 8821 based on Foata normal form. 0/10882 useless extension candidates. Maximal degree in co-relation 33956. Up to 14312 conditions per place. [2023-11-21 22:12:08,052 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-21 22:12:08,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 96 transitions, 333 flow [2023-11-21 22:12:08,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:08,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:08,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-21 22:12:08,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350210970464135 [2023-11-21 22:12:08,055 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-21 22:12:08,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-21 22:12:08,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:08,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-21 22:12:08,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 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) [2023-11-21 22:12:08,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:08,059 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:08,060 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 233 flow. Second operand 3 states and 301 transitions. [2023-11-21 22:12:08,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 96 transitions, 333 flow [2023-11-21 22:12:08,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 96 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:08,065 INFO L231 Difference]: Finished difference. Result has 100 places, 95 transitions, 229 flow [2023-11-21 22:12:08,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=229, PETRI_PLACES=100, PETRI_TRANSITIONS=95} [2023-11-21 22:12:08,067 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -12 predicate places. [2023-11-21 22:12:08,067 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 95 transitions, 229 flow [2023-11-21 22:12:08,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:08,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:08,068 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:12:08,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:12:08,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:08,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:08,071 INFO L85 PathProgramCache]: Analyzing trace with hash 291672141, now seen corresponding path program 1 times [2023-11-21 22:12:08,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:08,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446656435] [2023-11-21 22:12:08,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:08,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:08,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:08,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:08,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:08,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446656435] [2023-11-21 22:12:08,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446656435] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:08,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:08,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:08,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626524804] [2023-11-21 22:12:08,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:08,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:08,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:08,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:08,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:08,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2023-11-21 22:12:08,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 95 transitions, 229 flow. Second operand has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:08,450 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:08,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2023-11-21 22:12:08,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:10,265 INFO L124 PetriNetUnfolderBase]: 10858/19336 cut-off events. [2023-11-21 22:12:10,265 INFO L125 PetriNetUnfolderBase]: For 321/324 co-relation queries the response was YES. [2023-11-21 22:12:10,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33997 conditions, 19336 events. 10858/19336 cut-off events. For 321/324 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 171128 event pairs, 10538 based on Foata normal form. 5/10879 useless extension candidates. Maximal degree in co-relation 33934. Up to 14311 conditions per place. [2023-11-21 22:12:10,463 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-11-21 22:12:10,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 96 transitions, 333 flow [2023-11-21 22:12:10,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:10,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:10,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 307 transitions. [2023-11-21 22:12:10,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6476793248945147 [2023-11-21 22:12:10,466 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 307 transitions. [2023-11-21 22:12:10,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 307 transitions. [2023-11-21 22:12:10,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:10,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 307 transitions. [2023-11-21 22:12:10,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:10,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:10,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:10,472 INFO L175 Difference]: Start difference. First operand has 100 places, 95 transitions, 229 flow. Second operand 3 states and 307 transitions. [2023-11-21 22:12:10,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 96 transitions, 333 flow [2023-11-21 22:12:10,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 96 transitions, 329 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:10,478 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 231 flow [2023-11-21 22:12:10,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=231, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-11-21 22:12:10,481 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -12 predicate places. [2023-11-21 22:12:10,481 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 231 flow [2023-11-21 22:12:10,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:10,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:10,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:10,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:12:10,482 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:10,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:10,483 INFO L85 PathProgramCache]: Analyzing trace with hash -2105682265, now seen corresponding path program 1 times [2023-11-21 22:12:10,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046016585] [2023-11-21 22:12:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:11,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046016585] [2023-11-21 22:12:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046016585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:11,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:11,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:11,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831333402] [2023-11-21 22:12:11,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:11,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:12:11,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:11,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:12:11,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:12:11,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 158 [2023-11-21 22:12:11,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 231 flow. Second operand has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:11,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:11,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 158 [2023-11-21 22:12:11,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:13,781 INFO L124 PetriNetUnfolderBase]: 17146/29842 cut-off events. [2023-11-21 22:12:13,781 INFO L125 PetriNetUnfolderBase]: For 3925/3931 co-relation queries the response was YES. [2023-11-21 22:12:13,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54408 conditions, 29842 events. 17146/29842 cut-off events. For 3925/3931 co-relation queries the response was YES. Maximal size of possible extension queue 2415. Compared 271525 event pairs, 13227 based on Foata normal form. 1721/18873 useless extension candidates. Maximal degree in co-relation 33937. Up to 22313 conditions per place. [2023-11-21 22:12:13,978 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 52 selfloop transitions, 6 changer transitions 0/99 dead transitions. [2023-11-21 22:12:13,978 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 99 transitions, 358 flow [2023-11-21 22:12:13,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:12:13,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:12:13,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 455 transitions. [2023-11-21 22:12:13,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759493670886076 [2023-11-21 22:12:13,981 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 455 transitions. [2023-11-21 22:12:13,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 455 transitions. [2023-11-21 22:12:13,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:13,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 455 transitions. [2023-11-21 22:12:13,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.0) internal successors, (455), 5 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) [2023-11-21 22:12:13,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,987 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 231 flow. Second operand 5 states and 455 transitions. [2023-11-21 22:12:13,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 99 transitions, 358 flow [2023-11-21 22:12:13,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 99 transitions, 352 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:12:13,991 INFO L231 Difference]: Finished difference. Result has 100 places, 93 transitions, 233 flow [2023-11-21 22:12:13,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=233, PETRI_PLACES=100, PETRI_TRANSITIONS=93} [2023-11-21 22:12:13,992 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -12 predicate places. [2023-11-21 22:12:13,992 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 93 transitions, 233 flow [2023-11-21 22:12:13,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 80.5) internal successors, (483), 6 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:13,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:13,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:13,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:12:13,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:13,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:13,994 INFO L85 PathProgramCache]: Analyzing trace with hash -2105724464, now seen corresponding path program 1 times [2023-11-21 22:12:13,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:13,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398560008] [2023-11-21 22:12:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:13,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:14,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:14,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:14,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398560008] [2023-11-21 22:12:14,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398560008] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:14,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:14,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:12:14,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932030437] [2023-11-21 22:12:14,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:14,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:12:14,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:14,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:12:14,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:12:14,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 158 [2023-11-21 22:12:14,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 93 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:14,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:14,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 158 [2023-11-21 22:12:14,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:16,276 INFO L124 PetriNetUnfolderBase]: 10862/19336 cut-off events. [2023-11-21 22:12:16,277 INFO L125 PetriNetUnfolderBase]: For 327/329 co-relation queries the response was YES. [2023-11-21 22:12:16,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34007 conditions, 19336 events. 10862/19336 cut-off events. For 327/329 co-relation queries the response was YES. Maximal size of possible extension queue 1739. Compared 171182 event pairs, 8821 based on Foata normal form. 2/10877 useless extension candidates. Maximal degree in co-relation 33944. Up to 14312 conditions per place. [2023-11-21 22:12:16,397 INFO L140 encePairwiseOnDemand]: 155/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/93 dead transitions. [2023-11-21 22:12:16,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 93 transitions, 333 flow [2023-11-21 22:12:16,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:16,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:16,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 294 transitions. [2023-11-21 22:12:16,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.620253164556962 [2023-11-21 22:12:16,399 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 294 transitions. [2023-11-21 22:12:16,399 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 294 transitions. [2023-11-21 22:12:16,400 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:16,400 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 294 transitions. [2023-11-21 22:12:16,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.0) internal successors, (294), 3 states have internal predecessors, (294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,403 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,404 INFO L175 Difference]: Start difference. First operand has 100 places, 93 transitions, 233 flow. Second operand 3 states and 294 transitions. [2023-11-21 22:12:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 93 transitions, 333 flow [2023-11-21 22:12:16,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 93 transitions, 326 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-21 22:12:16,407 INFO L231 Difference]: Finished difference. Result has 98 places, 92 transitions, 226 flow [2023-11-21 22:12:16,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=98, PETRI_TRANSITIONS=92} [2023-11-21 22:12:16,409 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -14 predicate places. [2023-11-21 22:12:16,409 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 92 transitions, 226 flow [2023-11-21 22:12:16,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 82.6) internal successors, (413), 5 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:16,410 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:12:16,410 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:16,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:16,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1929646668, now seen corresponding path program 1 times [2023-11-21 22:12:16,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:16,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261805303] [2023-11-21 22:12:16,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:16,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:16,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:16,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:16,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261805303] [2023-11-21 22:12:16,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261805303] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:16,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:16,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:16,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376393004] [2023-11-21 22:12:16,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:16,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:16,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:16,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2023-11-21 22:12:16,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 92 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:16,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:16,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2023-11-21 22:12:16,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:18,673 INFO L124 PetriNetUnfolderBase]: 10857/18329 cut-off events. [2023-11-21 22:12:18,673 INFO L125 PetriNetUnfolderBase]: For 328/330 co-relation queries the response was YES. [2023-11-21 22:12:18,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32983 conditions, 18329 events. 10857/18329 cut-off events. For 328/330 co-relation queries the response was YES. Maximal size of possible extension queue 1492. Compared 149980 event pairs, 8819 based on Foata normal form. 1252/12122 useless extension candidates. Maximal degree in co-relation 32920. Up to 14301 conditions per place. [2023-11-21 22:12:18,771 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 47 selfloop transitions, 2 changer transitions 0/91 dead transitions. [2023-11-21 22:12:18,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 91 transitions, 322 flow [2023-11-21 22:12:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:18,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:18,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-21 22:12:18,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434599156118144 [2023-11-21 22:12:18,774 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-21 22:12:18,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-21 22:12:18,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:18,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-21 22:12:18,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:18,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:18,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:18,779 INFO L175 Difference]: Start difference. First operand has 98 places, 92 transitions, 226 flow. Second operand 3 states and 305 transitions. [2023-11-21 22:12:18,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 91 transitions, 322 flow [2023-11-21 22:12:18,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:18,783 INFO L231 Difference]: Finished difference. Result has 96 places, 90 transitions, 222 flow [2023-11-21 22:12:18,784 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=222, PETRI_PLACES=96, PETRI_TRANSITIONS=90} [2023-11-21 22:12:18,784 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -16 predicate places. [2023-11-21 22:12:18,785 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 90 transitions, 222 flow [2023-11-21 22:12:18,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.25) internal successors, (349), 4 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:18,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:18,785 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:12:18,786 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:18,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1929646667, now seen corresponding path program 1 times [2023-11-21 22:12:18,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:18,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028824134] [2023-11-21 22:12:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:18,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:18,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:18,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028824134] [2023-11-21 22:12:18,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028824134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:18,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:18,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:18,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195529071] [2023-11-21 22:12:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:18,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:18,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:18,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:19,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2023-11-21 22:12:19,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 90 transitions, 222 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:19,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:19,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2023-11-21 22:12:19,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:21,043 INFO L124 PetriNetUnfolderBase]: 15483/22451 cut-off events. [2023-11-21 22:12:21,044 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2023-11-21 22:12:21,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42983 conditions, 22451 events. 15483/22451 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 1456. Compared 149049 event pairs, 12819 based on Foata normal form. 0/13882 useless extension candidates. Maximal degree in co-relation 42920. Up to 20179 conditions per place. [2023-11-21 22:12:21,154 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/89 dead transitions. [2023-11-21 22:12:21,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 89 transitions, 322 flow [2023-11-21 22:12:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-21 22:12:21,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350210970464135 [2023-11-21 22:12:21,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-21 22:12:21,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-21 22:12:21,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:21,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-21 22:12:21,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 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) [2023-11-21 22:12:21,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:21,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:21,161 INFO L175 Difference]: Start difference. First operand has 96 places, 90 transitions, 222 flow. Second operand 3 states and 301 transitions. [2023-11-21 22:12:21,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 89 transitions, 322 flow [2023-11-21 22:12:21,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 89 transitions, 318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:21,164 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 218 flow [2023-11-21 22:12:21,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-11-21 22:12:21,167 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -18 predicate places. [2023-11-21 22:12:21,167 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 218 flow [2023-11-21 22:12:21,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:21,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:21,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:21,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:12:21,168 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:21,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:21,169 INFO L85 PathProgramCache]: Analyzing trace with hash -2033018375, now seen corresponding path program 1 times [2023-11-21 22:12:21,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:21,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567608850] [2023-11-21 22:12:21,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:21,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:21,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:21,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567608850] [2023-11-21 22:12:21,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567608850] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:21,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:21,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:21,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570121336] [2023-11-21 22:12:21,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:21,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:21,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:21,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:21,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2023-11-21 22:12:21,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:21,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:21,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2023-11-21 22:12:21,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:23,104 INFO L124 PetriNetUnfolderBase]: 11595/17957 cut-off events. [2023-11-21 22:12:23,104 INFO L125 PetriNetUnfolderBase]: For 289/289 co-relation queries the response was YES. [2023-11-21 22:12:23,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33609 conditions, 17957 events. 11595/17957 cut-off events. For 289/289 co-relation queries the response was YES. Maximal size of possible extension queue 1250. Compared 129084 event pairs, 9427 based on Foata normal form. 0/11550 useless extension candidates. Maximal degree in co-relation 33546. Up to 15299 conditions per place. [2023-11-21 22:12:23,202 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 49 selfloop transitions, 2 changer transitions 0/87 dead transitions. [2023-11-21 22:12:23,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 87 transitions, 318 flow [2023-11-21 22:12:23,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2023-11-21 22:12:23,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350210970464135 [2023-11-21 22:12:23,205 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2023-11-21 22:12:23,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2023-11-21 22:12:23,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:23,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2023-11-21 22:12:23,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 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) [2023-11-21 22:12:23,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:23,210 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:23,210 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 218 flow. Second operand 3 states and 301 transitions. [2023-11-21 22:12:23,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 87 transitions, 318 flow [2023-11-21 22:12:23,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 87 transitions, 314 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:23,214 INFO L231 Difference]: Finished difference. Result has 92 places, 86 transitions, 214 flow [2023-11-21 22:12:23,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=92, PETRI_TRANSITIONS=86} [2023-11-21 22:12:23,215 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -20 predicate places. [2023-11-21 22:12:23,215 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 86 transitions, 214 flow [2023-11-21 22:12:23,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.66666666666667) internal successors, (260), 3 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:23,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:23,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:23,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:12:23,216 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:23,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:23,217 INFO L85 PathProgramCache]: Analyzing trace with hash -2033018374, now seen corresponding path program 1 times [2023-11-21 22:12:23,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:23,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768272992] [2023-11-21 22:12:23,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:23,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:23,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768272992] [2023-11-21 22:12:23,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768272992] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:23,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:23,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:23,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920697205] [2023-11-21 22:12:23,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:23,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2023-11-21 22:12:23,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 86 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:23,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:23,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2023-11-21 22:12:23,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:25,231 INFO L124 PetriNetUnfolderBase]: 10857/16911 cut-off events. [2023-11-21 22:12:25,231 INFO L125 PetriNetUnfolderBase]: For 329/331 co-relation queries the response was YES. [2023-11-21 22:12:25,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31565 conditions, 16911 events. 10857/16911 cut-off events. For 329/331 co-relation queries the response was YES. Maximal size of possible extension queue 1241. Compared 122446 event pairs, 8819 based on Foata normal form. 210/11080 useless extension candidates. Maximal degree in co-relation 31502. Up to 14301 conditions per place. [2023-11-21 22:12:25,311 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 47 selfloop transitions, 2 changer transitions 0/85 dead transitions. [2023-11-21 22:12:25,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 85 transitions, 310 flow [2023-11-21 22:12:25,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:25,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:25,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 305 transitions. [2023-11-21 22:12:25,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6434599156118144 [2023-11-21 22:12:25,314 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 305 transitions. [2023-11-21 22:12:25,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 305 transitions. [2023-11-21 22:12:25,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:25,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 305 transitions. [2023-11-21 22:12:25,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.66666666666667) internal successors, (305), 3 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:25,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:25,321 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:25,321 INFO L175 Difference]: Start difference. First operand has 92 places, 86 transitions, 214 flow. Second operand 3 states and 305 transitions. [2023-11-21 22:12:25,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 85 transitions, 310 flow [2023-11-21 22:12:25,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 85 transitions, 306 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:25,325 INFO L231 Difference]: Finished difference. Result has 90 places, 84 transitions, 210 flow [2023-11-21 22:12:25,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=90, PETRI_TRANSITIONS=84} [2023-11-21 22:12:25,329 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -22 predicate places. [2023-11-21 22:12:25,329 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 84 transitions, 210 flow [2023-11-21 22:12:25,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 87.75) internal successors, (351), 4 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:25,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:25,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:25,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:12:25,330 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:25,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:25,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2033017032, now seen corresponding path program 1 times [2023-11-21 22:12:25,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:25,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447488620] [2023-11-21 22:12:25,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:25,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:25,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:25,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:25,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447488620] [2023-11-21 22:12:25,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447488620] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:25,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285602895] [2023-11-21 22:12:25,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:25,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:25,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:25,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:25,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:25,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 158 [2023-11-21 22:12:25,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 84 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:25,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:25,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 158 [2023-11-21 22:12:25,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:26,250 INFO L124 PetriNetUnfolderBase]: 4536/7307 cut-off events. [2023-11-21 22:12:26,250 INFO L125 PetriNetUnfolderBase]: For 186/190 co-relation queries the response was YES. [2023-11-21 22:12:26,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13600 conditions, 7307 events. 4536/7307 cut-off events. For 186/190 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 47553 event pairs, 3592 based on Foata normal form. 2/5389 useless extension candidates. Maximal degree in co-relation 13531. Up to 6073 conditions per place. [2023-11-21 22:12:26,288 INFO L140 encePairwiseOnDemand]: 150/158 looper letters, 42 selfloop transitions, 5 changer transitions 0/82 dead transitions. [2023-11-21 22:12:26,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 82 transitions, 300 flow [2023-11-21 22:12:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:26,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:26,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 308 transitions. [2023-11-21 22:12:26,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6497890295358649 [2023-11-21 22:12:26,291 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 308 transitions. [2023-11-21 22:12:26,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 308 transitions. [2023-11-21 22:12:26,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:26,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 308 transitions. [2023-11-21 22:12:26,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,294 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,294 INFO L175 Difference]: Start difference. First operand has 90 places, 84 transitions, 210 flow. Second operand 3 states and 308 transitions. [2023-11-21 22:12:26,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 82 transitions, 300 flow [2023-11-21 22:12:26,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 82 transitions, 296 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:26,298 INFO L231 Difference]: Finished difference. Result has 86 places, 80 transitions, 208 flow [2023-11-21 22:12:26,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=208, PETRI_PLACES=86, PETRI_TRANSITIONS=80} [2023-11-21 22:12:26,299 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -26 predicate places. [2023-11-21 22:12:26,299 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 80 transitions, 208 flow [2023-11-21 22:12:26,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:26,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:26,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:12:26,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:26,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:26,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1929593571, now seen corresponding path program 1 times [2023-11-21 22:12:26,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:26,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944162809] [2023-11-21 22:12:26,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:26,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:26,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:26,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:26,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944162809] [2023-11-21 22:12:26,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944162809] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:26,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:26,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:26,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679152517] [2023-11-21 22:12:26,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:26,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:26,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:26,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:26,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:26,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 158 [2023-11-21 22:12:26,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 80 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:26,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 158 [2023-11-21 22:12:26,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:26,832 INFO L124 PetriNetUnfolderBase]: 1485/2540 cut-off events. [2023-11-21 22:12:26,832 INFO L125 PetriNetUnfolderBase]: For 104/108 co-relation queries the response was YES. [2023-11-21 22:12:26,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 2540 events. 1485/2540 cut-off events. For 104/108 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13688 event pairs, 1115 based on Foata normal form. 4/2284 useless extension candidates. Maximal degree in co-relation 4657. Up to 2060 conditions per place. [2023-11-21 22:12:26,844 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 41 selfloop transitions, 1 changer transitions 0/77 dead transitions. [2023-11-21 22:12:26,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 286 flow [2023-11-21 22:12:26,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:26,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:26,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-21 22:12:26,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6413502109704642 [2023-11-21 22:12:26,847 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-21 22:12:26,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-21 22:12:26,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:26,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-21 22:12:26,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,851 INFO L175 Difference]: Start difference. First operand has 86 places, 80 transitions, 208 flow. Second operand 3 states and 304 transitions. [2023-11-21 22:12:26,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 286 flow [2023-11-21 22:12:26,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 276 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:26,853 INFO L231 Difference]: Finished difference. Result has 81 places, 75 transitions, 190 flow [2023-11-21 22:12:26,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=81, PETRI_TRANSITIONS=75} [2023-11-21 22:12:26,856 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -31 predicate places. [2023-11-21 22:12:26,856 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 75 transitions, 190 flow [2023-11-21 22:12:26,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.33333333333333) internal successors, (268), 3 states have internal predecessors, (268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:26,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:26,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:12:26,857 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:26,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1714179633, now seen corresponding path program 1 times [2023-11-21 22:12:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734300585] [2023-11-21 22:12:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:26,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:27,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:27,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734300585] [2023-11-21 22:12:27,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734300585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:27,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:27,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:12:27,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331892818] [2023-11-21 22:12:27,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:27,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:12:27,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:27,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:12:27,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:12:27,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 158 [2023-11-21 22:12:27,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 75 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:27,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 158 [2023-11-21 22:12:27,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:27,326 INFO L124 PetriNetUnfolderBase]: 1551/2609 cut-off events. [2023-11-21 22:12:27,326 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-21 22:12:27,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4888 conditions, 2609 events. 1551/2609 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13846 event pairs, 1163 based on Foata normal form. 0/2390 useless extension candidates. Maximal degree in co-relation 4830. Up to 2159 conditions per place. [2023-11-21 22:12:27,334 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 41 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-21 22:12:27,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 74 transitions, 274 flow [2023-11-21 22:12:27,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:27,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:27,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 293 transitions. [2023-11-21 22:12:27,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6181434599156118 [2023-11-21 22:12:27,336 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 293 transitions. [2023-11-21 22:12:27,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 293 transitions. [2023-11-21 22:12:27,337 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:27,337 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 293 transitions. [2023-11-21 22:12:27,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,339 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,339 INFO L175 Difference]: Start difference. First operand has 81 places, 75 transitions, 190 flow. Second operand 3 states and 293 transitions. [2023-11-21 22:12:27,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 74 transitions, 274 flow [2023-11-21 22:12:27,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 74 transitions, 273 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:12:27,341 INFO L231 Difference]: Finished difference. Result has 80 places, 73 transitions, 189 flow [2023-11-21 22:12:27,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=189, PETRI_PLACES=80, PETRI_TRANSITIONS=73} [2023-11-21 22:12:27,342 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -32 predicate places. [2023-11-21 22:12:27,342 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 73 transitions, 189 flow [2023-11-21 22:12:27,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:27,342 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:27,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:12:27,343 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:27,343 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:27,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1978782638, now seen corresponding path program 1 times [2023-11-21 22:12:27,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:27,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675015604] [2023-11-21 22:12:27,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:27,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:27,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:27,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:27,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675015604] [2023-11-21 22:12:27,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675015604] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:27,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:27,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:27,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636486477] [2023-11-21 22:12:27,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:27,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:27,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:27,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:27,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:27,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 158 [2023-11-21 22:12:27,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 73 transitions, 189 flow. Second operand has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:27,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:27,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 158 [2023-11-21 22:12:27,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:28,135 INFO L124 PetriNetUnfolderBase]: 1485/2493 cut-off events. [2023-11-21 22:12:28,136 INFO L125 PetriNetUnfolderBase]: For 97/99 co-relation queries the response was YES. [2023-11-21 22:12:28,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4675 conditions, 2493 events. 1485/2493 cut-off events. For 97/99 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 13205 event pairs, 1115 based on Foata normal form. 30/2312 useless extension candidates. Maximal degree in co-relation 4614. Up to 2057 conditions per place. [2023-11-21 22:12:28,152 INFO L140 encePairwiseOnDemand]: 154/158 looper letters, 39 selfloop transitions, 2 changer transitions 0/72 dead transitions. [2023-11-21 22:12:28,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 72 transitions, 269 flow [2023-11-21 22:12:28,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:28,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-11-21 22:12:28,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6265822784810127 [2023-11-21 22:12:28,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-11-21 22:12:28,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-11-21 22:12:28,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:28,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-11-21 22:12:28,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,160 INFO L175 Difference]: Start difference. First operand has 80 places, 73 transitions, 189 flow. Second operand 3 states and 297 transitions. [2023-11-21 22:12:28,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 72 transitions, 269 flow [2023-11-21 22:12:28,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 72 transitions, 265 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:28,163 INFO L231 Difference]: Finished difference. Result has 78 places, 71 transitions, 185 flow [2023-11-21 22:12:28,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=185, PETRI_PLACES=78, PETRI_TRANSITIONS=71} [2023-11-21 22:12:28,164 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -34 predicate places. [2023-11-21 22:12:28,164 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 71 transitions, 185 flow [2023-11-21 22:12:28,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:28,165 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] [2023-11-21 22:12:28,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:12:28,166 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:28,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1487787420, now seen corresponding path program 1 times [2023-11-21 22:12:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:28,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351960365] [2023-11-21 22:12:28,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:28,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:28,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:28,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:28,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351960365] [2023-11-21 22:12:28,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351960365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:28,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:28,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:12:28,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128688523] [2023-11-21 22:12:28,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:28,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:12:28,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:28,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:12:28,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:12:28,556 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 158 [2023-11-21 22:12:28,557 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 71 transitions, 185 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,557 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:28,557 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 158 [2023-11-21 22:12:28,557 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:28,892 INFO L124 PetriNetUnfolderBase]: 1627/2575 cut-off events. [2023-11-21 22:12:28,892 INFO L125 PetriNetUnfolderBase]: For 95/95 co-relation queries the response was YES. [2023-11-21 22:12:28,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4959 conditions, 2575 events. 1627/2575 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 12783 event pairs, 1227 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 4898. Up to 2259 conditions per place. [2023-11-21 22:12:28,908 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 41 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-11-21 22:12:28,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 265 flow [2023-11-21 22:12:28,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:12:28,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:12:28,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 289 transitions. [2023-11-21 22:12:28,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.609704641350211 [2023-11-21 22:12:28,911 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 289 transitions. [2023-11-21 22:12:28,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 289 transitions. [2023-11-21 22:12:28,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:28,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 289 transitions. [2023-11-21 22:12:28,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,915 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,915 INFO L175 Difference]: Start difference. First operand has 78 places, 71 transitions, 185 flow. Second operand 3 states and 289 transitions. [2023-11-21 22:12:28,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 265 flow [2023-11-21 22:12:28,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:12:28,918 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 177 flow [2023-11-21 22:12:28,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=177, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2023-11-21 22:12:28,919 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -38 predicate places. [2023-11-21 22:12:28,919 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 177 flow [2023-11-21 22:12:28,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:28,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:28,920 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:28,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:12:28,920 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:28,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:28,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1298073199, now seen corresponding path program 1 times [2023-11-21 22:12:28,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:28,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987610498] [2023-11-21 22:12:28,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:28,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:28,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:29,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:29,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:29,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987610498] [2023-11-21 22:12:29,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987610498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:29,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:29,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:12:29,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965539067] [2023-11-21 22:12:29,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:12:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:12:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:12:30,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 158 [2023-11-21 22:12:30,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:30,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:30,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 158 [2023-11-21 22:12:30,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:30,657 INFO L124 PetriNetUnfolderBase]: 2370/3744 cut-off events. [2023-11-21 22:12:30,657 INFO L125 PetriNetUnfolderBase]: For 427/433 co-relation queries the response was YES. [2023-11-21 22:12:30,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7433 conditions, 3744 events. 2370/3744 cut-off events. For 427/433 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 20013 event pairs, 1669 based on Foata normal form. 4/3551 useless extension candidates. Maximal degree in co-relation 4533. Up to 3214 conditions per place. [2023-11-21 22:12:30,673 INFO L140 encePairwiseOnDemand]: 152/158 looper letters, 43 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2023-11-21 22:12:30,673 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 285 flow [2023-11-21 22:12:30,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:12:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:12:30,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 458 transitions. [2023-11-21 22:12:30,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579746835443038 [2023-11-21 22:12:30,676 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 458 transitions. [2023-11-21 22:12:30,676 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 458 transitions. [2023-11-21 22:12:30,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:30,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 458 transitions. [2023-11-21 22:12:30,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 91.6) internal successors, (458), 5 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:30,681 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:30,682 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:30,682 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 177 flow. Second operand 5 states and 458 transitions. [2023-11-21 22:12:30,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 285 flow [2023-11-21 22:12:30,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 275 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-21 22:12:30,686 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 175 flow [2023-11-21 22:12:30,686 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2023-11-21 22:12:30,687 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -38 predicate places. [2023-11-21 22:12:30,687 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 175 flow [2023-11-21 22:12:30,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 86.57142857142857) internal successors, (606), 7 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:30,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:30,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:30,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:12:30,689 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:30,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:30,690 INFO L85 PathProgramCache]: Analyzing trace with hash 2089693579, now seen corresponding path program 1 times [2023-11-21 22:12:30,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:30,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808015475] [2023-11-21 22:12:30,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:30,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:30,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:12:31,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:12:31,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:12:31,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808015475] [2023-11-21 22:12:31,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808015475] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:12:31,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:12:31,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:12:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253468815] [2023-11-21 22:12:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:12:31,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:12:31,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:12:31,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:12:31,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:12:31,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 158 [2023-11-21 22:12:31,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 175 flow. Second operand has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:31,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:12:31,942 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 158 [2023-11-21 22:12:31,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:12:32,333 INFO L124 PetriNetUnfolderBase]: 1485/2408 cut-off events. [2023-11-21 22:12:32,334 INFO L125 PetriNetUnfolderBase]: For 101/105 co-relation queries the response was YES. [2023-11-21 22:12:32,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4590 conditions, 2408 events. 1485/2408 cut-off events. For 101/105 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 12177 event pairs, 1112 based on Foata normal form. 2/2279 useless extension candidates. Maximal degree in co-relation 4536. Up to 2048 conditions per place. [2023-11-21 22:12:32,349 INFO L140 encePairwiseOnDemand]: 153/158 looper letters, 39 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2023-11-21 22:12:32,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 69 transitions, 269 flow [2023-11-21 22:12:32,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:12:32,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:12:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 474 transitions. [2023-11-21 22:12:32,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:12:32,353 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 474 transitions. [2023-11-21 22:12:32,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 474 transitions. [2023-11-21 22:12:32,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:12:32,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 474 transitions. [2023-11-21 22:12:32,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 94.8) internal successors, (474), 5 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:32,358 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:32,359 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 158.0) internal successors, (948), 6 states have internal predecessors, (948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:32,359 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 175 flow. Second operand 5 states and 474 transitions. [2023-11-21 22:12:32,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 69 transitions, 269 flow [2023-11-21 22:12:32,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 69 transitions, 257 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:12:32,362 INFO L231 Difference]: Finished difference. Result has 73 places, 65 transitions, 171 flow [2023-11-21 22:12:32,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=158, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=73, PETRI_TRANSITIONS=65} [2023-11-21 22:12:32,363 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -39 predicate places. [2023-11-21 22:12:32,363 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 65 transitions, 171 flow [2023-11-21 22:12:32,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 91.33333333333333) internal successors, (548), 6 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:12:32,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:12:32,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:32,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:12:32,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK === [thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 68 more)] === [2023-11-21 22:12:32,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:12:32,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1544509728, now seen corresponding path program 1 times [2023-11-21 22:12:32,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:12:32,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984349599] [2023-11-21 22:12:32,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:12:32,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:12:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:12:32,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:12:32,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:12:32,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:12:32,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:12:32,617 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK (70 of 71 remaining) [2023-11-21 22:12:32,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (69 of 71 remaining) [2023-11-21 22:12:32,620 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (68 of 71 remaining) [2023-11-21 22:12:32,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (67 of 71 remaining) [2023-11-21 22:12:32,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (66 of 71 remaining) [2023-11-21 22:12:32,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (65 of 71 remaining) [2023-11-21 22:12:32,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (64 of 71 remaining) [2023-11-21 22:12:32,621 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (63 of 71 remaining) [2023-11-21 22:12:32,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (62 of 71 remaining) [2023-11-21 22:12:32,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (61 of 71 remaining) [2023-11-21 22:12:32,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (60 of 71 remaining) [2023-11-21 22:12:32,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 71 remaining) [2023-11-21 22:12:32,622 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 71 remaining) [2023-11-21 22:12:32,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 71 remaining) [2023-11-21 22:12:32,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 71 remaining) [2023-11-21 22:12:32,623 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 71 remaining) [2023-11-21 22:12:32,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 71 remaining) [2023-11-21 22:12:32,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 71 remaining) [2023-11-21 22:12:32,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 71 remaining) [2023-11-21 22:12:32,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 71 remaining) [2023-11-21 22:12:32,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 71 remaining) [2023-11-21 22:12:32,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (49 of 71 remaining) [2023-11-21 22:12:32,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (48 of 71 remaining) [2023-11-21 22:12:32,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (47 of 71 remaining) [2023-11-21 22:12:32,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (46 of 71 remaining) [2023-11-21 22:12:32,625 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 71 remaining) [2023-11-21 22:12:32,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 71 remaining) [2023-11-21 22:12:32,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 71 remaining) [2023-11-21 22:12:32,626 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 71 remaining) [2023-11-21 22:12:32,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 71 remaining) [2023-11-21 22:12:32,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 71 remaining) [2023-11-21 22:12:32,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 71 remaining) [2023-11-21 22:12:32,627 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 71 remaining) [2023-11-21 22:12:32,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 71 remaining) [2023-11-21 22:12:32,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 71 remaining) [2023-11-21 22:12:32,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 71 remaining) [2023-11-21 22:12:32,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (34 of 71 remaining) [2023-11-21 22:12:32,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (33 of 71 remaining) [2023-11-21 22:12:32,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 71 remaining) [2023-11-21 22:12:32,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 71 remaining) [2023-11-21 22:12:32,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 71 remaining) [2023-11-21 22:12:32,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 71 remaining) [2023-11-21 22:12:32,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 71 remaining) [2023-11-21 22:12:32,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 71 remaining) [2023-11-21 22:12:32,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 71 remaining) [2023-11-21 22:12:32,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 71 remaining) [2023-11-21 22:12:32,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 71 remaining) [2023-11-21 22:12:32,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 71 remaining) [2023-11-21 22:12:32,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 71 remaining) [2023-11-21 22:12:32,631 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 71 remaining) [2023-11-21 22:12:32,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 71 remaining) [2023-11-21 22:12:32,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 71 remaining) [2023-11-21 22:12:32,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 71 remaining) [2023-11-21 22:12:32,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 71 remaining) [2023-11-21 22:12:32,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 71 remaining) [2023-11-21 22:12:32,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 71 remaining) [2023-11-21 22:12:32,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 71 remaining) [2023-11-21 22:12:32,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Err19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 71 remaining) [2023-11-21 22:12:32,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 71 remaining) [2023-11-21 22:12:32,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 71 remaining) [2023-11-21 22:12:32,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err6INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 71 remaining) [2023-11-21 22:12:32,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err8INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 71 remaining) [2023-11-21 22:12:32,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread0Thread1of1ForFork4Err9INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 71 remaining) [2023-11-21 22:12:32,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 71 remaining) [2023-11-21 22:12:32,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 71 remaining) [2023-11-21 22:12:32,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 71 remaining) [2023-11-21 22:12:32,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 71 remaining) [2023-11-21 22:12:32,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 71 remaining) [2023-11-21 22:12:32,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread2Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 71 remaining) [2023-11-21 22:12:32,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 71 remaining) [2023-11-21 22:12:32,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thread3Err1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (0 of 71 remaining) [2023-11-21 22:12:32,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:12:32,636 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:12:32,648 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:12:32,648 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:12:32,763 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated [2023-11-21 22:12:32,768 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-21 22:12:32,768 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-21 22:12:32,769 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-21 22:12:32,770 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated [2023-11-21 22:12:32,772 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 22:12:32,773 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated [2023-11-21 22:12:32,780 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 22:12:32,781 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated [2023-11-21 22:12:32,783 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-21 22:12:32,784 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated [2023-11-21 22:12:32,788 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 22:12:32,792 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated [2023-11-21 22:12:32,792 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-21 22:12:32,797 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated [2023-11-21 22:12:32,798 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-21 22:12:32,799 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated [2023-11-21 22:12:32,800 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-21 22:12:32,803 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated [2023-11-21 22:12:32,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-21 22:12:32,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated [2023-11-21 22:12:32,804 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated [2023-11-21 22:12:32,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:12:32 BasicIcfg [2023-11-21 22:12:32,824 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:12:32,824 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:12:32,825 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:12:32,825 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:12:32,825 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:11:56" (3/4) ... [2023-11-21 22:12:32,827 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:12:32,829 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:12:32,830 INFO L158 Benchmark]: Toolchain (without parser) took 38816.98ms. Allocated memory was 169.9MB in the beginning and 10.2GB in the end (delta: 10.0GB). Free memory was 136.5MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 1.5GB. Max. memory is 16.1GB. [2023-11-21 22:12:32,830 INFO L158 Benchmark]: CDTParser took 0.50ms. Allocated memory is still 121.6MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:12:32,831 INFO L158 Benchmark]: CACSL2BoogieTranslator took 988.29ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 114.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 22:12:32,831 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.53ms. Allocated memory is still 169.9MB. Free memory was 114.2MB in the beginning and 112.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:12:32,832 INFO L158 Benchmark]: Boogie Preprocessor took 50.02ms. Allocated memory is still 169.9MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:12:32,832 INFO L158 Benchmark]: RCFGBuilder took 894.22ms. Allocated memory is still 169.9MB. Free memory was 110.0MB in the beginning and 76.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2023-11-21 22:12:32,833 INFO L158 Benchmark]: TraceAbstraction took 36811.25ms. Allocated memory was 169.9MB in the beginning and 10.2GB in the end (delta: 10.0GB). Free memory was 76.0MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-21 22:12:32,833 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 10.2GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:12:32,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50ms. Allocated memory is still 121.6MB. Free memory is still 91.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 988.29ms. Allocated memory is still 169.9MB. Free memory was 136.5MB in the beginning and 114.2MB in the end (delta: 22.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 61.53ms. Allocated memory is still 169.9MB. Free memory was 114.2MB in the beginning and 112.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.02ms. Allocated memory is still 169.9MB. Free memory was 112.1MB in the beginning and 110.9MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 894.22ms. Allocated memory is still 169.9MB. Free memory was 110.0MB in the beginning and 76.5MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 36811.25ms. Allocated memory was 169.9MB in the beginning and 10.2GB in the end (delta: 10.0GB). Free memory was 76.0MB in the beginning and 8.7GB in the end (delta: -8.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 10.2GB. Free memory was 8.7GB in the beginning and 8.7GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre20 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem7 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre8 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre10 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre12 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre14 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem16 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem17 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem18 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem19 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~mem22 could not be translated - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1159]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1159. Possible FailurePath: [L1124] 0 char *v; [L1161] 0 pthread_t t; [L1162] FCALL, FORK 0 pthread_create(&t, 0, thread0, 0) VAL [arg={0:0}, t={6:0}, v={0:0}] [L1163] 0 \read(t) VAL [arg={0:0}, t={6:0}, v={0:0}] [L1146] 1 pthread_t t1, t2, t3, t4, t5; [L1147] FCALL, FORK 1 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={0:0}] [L1127] 2 v = malloc(sizeof(char)) [L1128] 2 return 0; [L1148] 1 \read(t1) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1148] FCALL, JOIN 2 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1149] FCALL, FORK 1 pthread_create(&t2, 0, thread2, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 3 v[0] = 'X' VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1150] FCALL, FORK 1 pthread_create(&t3, 0, thread3, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1140] 4 v[0] = 'Y' VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 3 return 0; [L1151] FCALL, FORK 1 pthread_create(&t4, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 5 v[0] = 'X' VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1142] 4 return 0; [L1152] FCALL, FORK 1 pthread_create(&t5, 0, thread2, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1133] 6 v[0] = 'X' VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 5 return 0; [L1153] 1 \read(t2) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1153] FCALL, JOIN 3 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1154] 1 \read(t3) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1154] FCALL, JOIN 4 pthread_join(t3, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] 1 \read(t4) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1155] FCALL, JOIN 5 pthread_join(t4, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1135] 6 return 0; [L1156] 1 \read(t5) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1156] FCALL, JOIN 6 pthread_join(t5, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t1={8:0}, t2={5:0}, t3={7:0}, t4={9:0}, t5={10:0}, v={3:0}] [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1157] 1 return 0; [L1163] FCALL, JOIN 1 pthread_join(t, 0) VAL [\result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, t={6:0}, v={3:0}] [L1164] EXPR 0 v[0] [L1164] CALL 0 __VERIFIER_assert(v[0] == 'X') [L1123] COND FALSE 0 !(!expression) VAL [\old(expression)=1, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=1, v={3:0}] [L1164] RET 0 __VERIFIER_assert(v[0] == 'X') [L1165] 0 return 0; [L1165] 0 return 0; VAL [\result=0, \result={0:0}, \result={0:0}, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, v={3:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 1162]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1151]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1152]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1149]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1150]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - UnprovableResult [Line: 1147]: Unable to prove that petrification did provide enough thread instances (tool internal message) Unable to prove that petrification did provide enough thread instances (tool internal message) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 11 procedures, 178 locations, 71 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 36.3s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 30.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3811 SdHoareTripleChecker+Valid, 4.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2276 mSDsluCounter, 265 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 225 mSDsCounter, 67 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3996 IncrementalHoareTripleChecker+Invalid, 4063 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 67 mSolverCounterUnsat, 40 mSDtfsCounter, 3996 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=251occurred in iteration=0, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 329 NumberOfCodeBlocks, 329 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 257 ConstructedInterpolants, 0 QuantifiedInterpolants, 3403 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-21 22:12:32,908 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/singleton.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx --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 ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:12:35,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:12:36,017 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:12:36,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:12:36,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:12:36,052 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:12:36,053 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:12:36,054 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:12:36,055 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:12:36,055 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:12:36,057 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:12:36,057 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:12:36,058 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:12:36,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:12:36,059 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:12:36,060 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:12:36,060 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:12:36,061 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:12:36,061 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:12:36,062 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:12:36,063 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:12:36,063 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:12:36,064 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:12:36,064 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:12:36,065 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:12:36,065 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:12:36,066 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:12:36,066 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:12:36,067 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:12:36,067 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:12:36,068 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:12:36,068 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:12:36,069 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:12:36,069 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:12:36,069 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:12:36,070 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:12:36,070 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:12:36,070 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:12:36,071 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:12:36,071 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:12:36,071 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:12:36,072 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:12:36,072 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_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ea0ecaab9c4a4889914d1343f60808acf6ec66df89812b70cea6837a39471f7f [2023-11-21 22:12:36,425 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:12:36,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:12:36,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:12:36,450 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:12:36,451 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:12:36,452 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4802d4e-431d-46da-8c0f-f2414c21c7c7/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/singleton.i