./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/pthread/triangular-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:04,679 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:04,797 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:25:04,807 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:04,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:04,857 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:04,858 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:04,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:04,860 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:25:04,865 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:25:04,866 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:04,867 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:04,867 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:04,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:04,870 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:04,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:04,871 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:04,871 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:04,872 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:25:04,873 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:25:04,873 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:25:04,874 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:25:04,874 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:25:04,875 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:25:04,875 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:04,876 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:04,877 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:04,877 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:04,878 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:25:04,878 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:25:04,880 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:04,880 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:04,880 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:25:04,881 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:25:04,881 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:25:04,881 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:25:04,881 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:25:04,882 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:25:04,882 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:25:04,882 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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-21 22:25:05,213 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:05,251 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:05,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:05,256 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:05,257 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:05,259 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-21 22:25:08,534 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:08,848 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:08,849 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/sv-benchmarks/c/pthread/triangular-2.i [2023-11-21 22:25:08,865 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/ca7ed07f6/2fe88da05f8445deb67ea57bfb2dd7d7/FLAG91adf5502 [2023-11-21 22:25:08,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/ca7ed07f6/2fe88da05f8445deb67ea57bfb2dd7d7 [2023-11-21 22:25:08,882 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:08,884 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:08,885 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:08,886 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:08,891 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:08,892 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:08" (1/1) ... [2023-11-21 22:25:08,893 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e5acb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:08, skipping insertion in model container [2023-11-21 22:25:08,894 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:08" (1/1) ... [2023-11-21 22:25:08,936 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:09,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:09,392 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:09,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:09,482 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:09,482 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:09,492 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:09,493 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09 WrapperNode [2023-11-21 22:25:09,493 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:09,494 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:09,495 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:09,495 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:09,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,537 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,563 INFO L138 Inliner]: procedures = 169, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2023-11-21 22:25:09,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:09,564 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:09,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:09,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:09,574 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,575 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,584 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,584 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,613 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:09,614 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:09,615 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:09,615 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:09,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (1/1) ... [2023-11-21 22:25:09,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:09,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:09,690 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-21 22:25:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-21 22:25:09,691 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-21 22:25:09,691 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-21 22:25:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:25:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:25:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:25:09,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:25:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:25:09,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:09,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:09,695 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 22:25:09,862 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:09,867 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:10,066 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:10,203 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:10,203 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:25:10,205 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:10 BoogieIcfgContainer [2023-11-21 22:25:10,206 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:10,208 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:10,209 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:10,216 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:10,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:08" (1/3) ... [2023-11-21 22:25:10,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff4f106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:10, skipping insertion in model container [2023-11-21 22:25:10,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:09" (2/3) ... [2023-11-21 22:25:10,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff4f106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:10, skipping insertion in model container [2023-11-21 22:25:10,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:10" (3/3) ... [2023-11-21 22:25:10,236 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-21 22:25:10,253 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:10,253 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:25:10,253 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:10,349 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:25:10,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-21 22:25:10,443 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-21 22:25:10,446 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:10,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-21 22:25:10,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-21 22:25:10,460 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-21 22:25:10,474 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:10,483 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;@1c862498, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:10,483 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 22:25:10,489 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:10,489 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:25:10,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:10,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:10,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:10,491 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:10,498 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:10,499 INFO L85 PathProgramCache]: Analyzing trace with hash 6737, now seen corresponding path program 1 times [2023-11-21 22:25:10,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:10,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140901710] [2023-11-21 22:25:10,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:10,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,001 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 22:25:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:11,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140901710] [2023-11-21 22:25:11,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140901710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:11,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:11,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:11,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19617910] [2023-11-21 22:25:11,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:11,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:11,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:11,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:11,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:11,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-21 22:25:11,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 22:25:11,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:11,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-21 22:25:11,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:11,280 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-21 22:25:11,280 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:25:11,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-21 22:25:11,288 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-21 22:25:11,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-21 22:25:11,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:11,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:11,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-21 22:25:11,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-21 22:25:11,306 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-21 22:25:11,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-21 22:25:11,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:11,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-21 22:25:11,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 22:25:11,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,327 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,330 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-21 22:25:11,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-21 22:25:11,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:11,338 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-21 22:25:11,341 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-21 22:25:11,347 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-21 22:25:11,347 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-21 22:25:11,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 22:25:11,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:11,349 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:11,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:25:11,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:11,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:11,351 INFO L85 PathProgramCache]: Analyzing trace with hash 6738, now seen corresponding path program 1 times [2023-11-21 22:25:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:11,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635388762] [2023-11-21 22:25:11,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:11,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,561 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 22:25:11,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:11,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635388762] [2023-11-21 22:25:11,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635388762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:11,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:11,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:11,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859054515] [2023-11-21 22:25:11,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:11,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:11,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:11,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:11,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:11,580 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 22:25:11,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:11,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:11,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 22:25:11,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:11,663 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-21 22:25:11,663 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:11,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-21 22:25:11,666 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-21 22:25:11,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-21 22:25:11,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-21 22:25:11,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-21 22:25:11,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:11,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:25:11,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,674 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,674 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-21 22:25:11,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-21 22:25:11,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:11,677 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-21 22:25:11,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-21 22:25:11,678 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-21 22:25:11,679 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-21 22:25:11,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:11,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:11,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:25:11,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:25:11,680 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:11,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:11,681 INFO L85 PathProgramCache]: Analyzing trace with hash 200868327, now seen corresponding path program 1 times [2023-11-21 22:25:11,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:11,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585881274] [2023-11-21 22:25:11,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:11,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:11,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:11,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585881274] [2023-11-21 22:25:11,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585881274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:11,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:11,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828357664] [2023-11-21 22:25:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:11,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:11,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:11,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:11,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:11,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 22:25:11,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 22:25:11,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:11,957 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-21 22:25:11,957 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:11,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-21 22:25:11,962 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-21 22:25:11,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-21 22:25:11,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:11,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:11,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-21 22:25:11,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-21 22:25:11,966 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:11,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-21 22:25:11,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:25:11,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,970 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:11,970 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-21 22:25:11,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-21 22:25:11,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:11,973 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-21 22:25:11,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-21 22:25:11,974 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-21 22:25:11,975 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-21 22:25:11,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:11,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:11,975 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:25:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:25:11,976 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:11,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 200868326, now seen corresponding path program 1 times [2023-11-21 22:25:11,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:11,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317820504] [2023-11-21 22:25:11,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:11,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:12,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:12,116 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 22:25:12,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:12,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317820504] [2023-11-21 22:25:12,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317820504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:12,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:12,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:12,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200500541] [2023-11-21 22:25:12,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:12,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:12,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:12,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:12,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:12,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-21 22:25:12,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 22:25:12,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:12,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-21 22:25:12,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:12,211 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-21 22:25:12,211 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:12,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-21 22:25:12,214 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-21 22:25:12,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-21 22:25:12,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:12,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:12,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-21 22:25:12,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-21 22:25:12,221 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-21 22:25:12,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-21 22:25:12,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:12,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-21 22:25:12,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 22:25:12,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:12,225 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:12,225 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-21 22:25:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-21 22:25:12,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:12,227 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-21 22:25:12,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-21 22:25:12,229 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-21 22:25:12,230 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-21 22:25:12,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 22:25:12,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:12,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:12,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:25:12,231 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:12,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1605654404, now seen corresponding path program 1 times [2023-11-21 22:25:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:12,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019627249] [2023-11-21 22:25:12,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:12,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:12,484 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 22:25:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019627249] [2023-11-21 22:25:12,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019627249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:12,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:12,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692870225] [2023-11-21 22:25:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:12,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:12,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:12,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:12,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:12,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 22:25:12,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 22:25:12,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:12,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 22:25:12,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:12,589 INFO L124 PetriNetUnfolderBase]: 70/154 cut-off events. [2023-11-21 22:25:12,590 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:12,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288 conditions, 154 events. 70/154 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 550 event pairs, 32 based on Foata normal form. 9/148 useless extension candidates. Maximal degree in co-relation 277. Up to 86 conditions per place. [2023-11-21 22:25:12,592 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 11 selfloop transitions, 1 changer transitions 7/30 dead transitions. [2023-11-21 22:25:12,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 106 flow [2023-11-21 22:25:12,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:12,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:12,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2023-11-21 22:25:12,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6285714285714286 [2023-11-21 22:25:12,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 88 transitions. [2023-11-21 22:25:12,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 88 transitions. [2023-11-21 22:25:12,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:12,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 88 transitions. [2023-11-21 22:25:12,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:12,597 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:12,597 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:12,598 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 88 transitions. [2023-11-21 22:25:12,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 106 flow [2023-11-21 22:25:12,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 30 transitions, 102 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:12,600 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 52 flow [2023-11-21 22:25:12,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=52, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-11-21 22:25:12,603 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-21 22:25:12,603 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 52 flow [2023-11-21 22:25:12,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 22:25:12,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:12,604 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:25:12,604 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:12,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:12,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1605653309, now seen corresponding path program 1 times [2023-11-21 22:25:12,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:12,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418520036] [2023-11-21 22:25:12,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:12,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:12,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:12,763 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 22:25:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:12,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418520036] [2023-11-21 22:25:12,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418520036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:12,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:12,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:25:12,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536491050] [2023-11-21 22:25:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:12,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:12,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:12,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:12,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:12,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:12,961 INFO L124 PetriNetUnfolderBase]: 273/483 cut-off events. [2023-11-21 22:25:12,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:12,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 483 events. 273/483 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1906 event pairs, 45 based on Foata normal form. 0/470 useless extension candidates. Maximal degree in co-relation 917. Up to 181 conditions per place. [2023-11-21 22:25:12,964 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 25 selfloop transitions, 4 changer transitions 20/55 dead transitions. [2023-11-21 22:25:12,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 55 transitions, 214 flow [2023-11-21 22:25:12,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:12,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:25:12,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 129 transitions. [2023-11-21 22:25:12,967 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2023-11-21 22:25:12,967 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 129 transitions. [2023-11-21 22:25:12,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 129 transitions. [2023-11-21 22:25:12,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:12,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 129 transitions. [2023-11-21 22:25:12,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 21.5) internal successors, (129), 6 states have internal predecessors, (129), 0 states have call successors, (0), 0 states 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 22:25:12,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:25:12,971 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states 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 22:25:12,971 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 6 states and 129 transitions. [2023-11-21 22:25:12,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 55 transitions, 214 flow [2023-11-21 22:25:12,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 55 transitions, 213 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:12,974 INFO L231 Difference]: Finished difference. Result has 36 places, 25 transitions, 78 flow [2023-11-21 22:25:12,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=78, PETRI_PLACES=36, PETRI_TRANSITIONS=25} [2023-11-21 22:25:12,977 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 0 predicate places. [2023-11-21 22:25:12,977 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 25 transitions, 78 flow [2023-11-21 22:25:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:12,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:12,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:12,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:25:12,978 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:12,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:12,979 INFO L85 PathProgramCache]: Analyzing trace with hash -204762607, now seen corresponding path program 1 times [2023-11-21 22:25:12,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:12,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15028100] [2023-11-21 22:25:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:12,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:13,112 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 22:25:13,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:13,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15028100] [2023-11-21 22:25:13,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15028100] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:13,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:13,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:13,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776048146] [2023-11-21 22:25:13,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:13,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:13,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:13,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:13,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:13,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:13,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 25 transitions, 78 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:13,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:13,128 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:13,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:13,377 INFO L124 PetriNetUnfolderBase]: 382/711 cut-off events. [2023-11-21 22:25:13,377 INFO L125 PetriNetUnfolderBase]: For 285/291 co-relation queries the response was YES. [2023-11-21 22:25:13,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 711 events. 382/711 cut-off events. For 285/291 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3123 event pairs, 65 based on Foata normal form. 33/743 useless extension candidates. Maximal degree in co-relation 1598. Up to 246 conditions per place. [2023-11-21 22:25:13,385 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 46 selfloop transitions, 9 changer transitions 20/81 dead transitions. [2023-11-21 22:25:13,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 386 flow [2023-11-21 22:25:13,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:25:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:25:13,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 189 transitions. [2023-11-21 22:25:13,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:25:13,388 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 189 transitions. [2023-11-21 22:25:13,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 189 transitions. [2023-11-21 22:25:13,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:13,388 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 189 transitions. [2023-11-21 22:25:13,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 21.0) internal successors, (189), 9 states have internal predecessors, (189), 0 states have call successors, (0), 0 states 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 22:25:13,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 22:25:13,391 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 22:25:13,391 INFO L175 Difference]: Start difference. First operand has 36 places, 25 transitions, 78 flow. Second operand 9 states and 189 transitions. [2023-11-21 22:25:13,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 386 flow [2023-11-21 22:25:13,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 81 transitions, 370 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:13,400 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 163 flow [2023-11-21 22:25:13,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=163, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-11-21 22:25:13,401 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 10 predicate places. [2023-11-21 22:25:13,402 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 163 flow [2023-11-21 22:25:13,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:13,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:13,405 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:13,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:25:13,406 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:13,406 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:13,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1564829837, now seen corresponding path program 2 times [2023-11-21 22:25:13,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:13,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135694220] [2023-11-21 22:25:13,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:13,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:13,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:13,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:13,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135694220] [2023-11-21 22:25:13,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135694220] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:13,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:13,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:13,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205532067] [2023-11-21 22:25:13,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:13,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:13,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:13,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:13,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:13,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:13,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 163 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:13,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:13,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:13,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:13,838 INFO L124 PetriNetUnfolderBase]: 373/699 cut-off events. [2023-11-21 22:25:13,838 INFO L125 PetriNetUnfolderBase]: For 1121/1133 co-relation queries the response was YES. [2023-11-21 22:25:13,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1967 conditions, 699 events. 373/699 cut-off events. For 1121/1133 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3080 event pairs, 80 based on Foata normal form. 48/746 useless extension candidates. Maximal degree in co-relation 1949. Up to 237 conditions per place. [2023-11-21 22:25:13,845 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 42 selfloop transitions, 15 changer transitions 32/95 dead transitions. [2023-11-21 22:25:13,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 95 transitions, 585 flow [2023-11-21 22:25:13,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 206 transitions. [2023-11-21 22:25:13,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5885714285714285 [2023-11-21 22:25:13,848 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 206 transitions. [2023-11-21 22:25:13,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 206 transitions. [2023-11-21 22:25:13,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:13,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 206 transitions. [2023-11-21 22:25:13,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.6) internal successors, (206), 10 states have internal predecessors, (206), 0 states have call successors, (0), 0 states 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 22:25:13,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:13,852 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:13,852 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 163 flow. Second operand 10 states and 206 transitions. [2023-11-21 22:25:13,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 95 transitions, 585 flow [2023-11-21 22:25:13,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 95 transitions, 575 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:13,864 INFO L231 Difference]: Finished difference. Result has 57 places, 42 transitions, 277 flow [2023-11-21 22:25:13,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=157, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=277, PETRI_PLACES=57, PETRI_TRANSITIONS=42} [2023-11-21 22:25:13,868 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 21 predicate places. [2023-11-21 22:25:13,868 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 42 transitions, 277 flow [2023-11-21 22:25:13,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:13,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:13,869 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 22:25:13,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:25:13,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:13,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:13,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1757896090, now seen corresponding path program 1 times [2023-11-21 22:25:13,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:13,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224528480] [2023-11-21 22:25:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:13,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:14,022 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 22:25:14,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:14,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224528480] [2023-11-21 22:25:14,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224528480] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:14,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:14,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:14,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666882107] [2023-11-21 22:25:14,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:14,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:14,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:14,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:14,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:14,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:14,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 42 transitions, 277 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:14,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:14,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:14,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:14,395 INFO L124 PetriNetUnfolderBase]: 508/942 cut-off events. [2023-11-21 22:25:14,395 INFO L125 PetriNetUnfolderBase]: For 3595/3607 co-relation queries the response was YES. [2023-11-21 22:25:14,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145 conditions, 942 events. 508/942 cut-off events. For 3595/3607 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 4360 event pairs, 53 based on Foata normal form. 39/978 useless extension candidates. Maximal degree in co-relation 3120. Up to 238 conditions per place. [2023-11-21 22:25:14,404 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 56 selfloop transitions, 21 changer transitions 23/106 dead transitions. [2023-11-21 22:25:14,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 106 transitions, 781 flow [2023-11-21 22:25:14,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:25:14,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-21 22:25:14,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 229 transitions. [2023-11-21 22:25:14,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5948051948051948 [2023-11-21 22:25:14,407 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 229 transitions. [2023-11-21 22:25:14,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 229 transitions. [2023-11-21 22:25:14,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:14,407 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 229 transitions. [2023-11-21 22:25:14,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.818181818181817) internal successors, (229), 11 states have internal predecessors, (229), 0 states have call successors, (0), 0 states 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 22:25:14,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 22:25:14,412 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 22:25:14,412 INFO L175 Difference]: Start difference. First operand has 57 places, 42 transitions, 277 flow. Second operand 11 states and 229 transitions. [2023-11-21 22:25:14,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 106 transitions, 781 flow [2023-11-21 22:25:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 106 transitions, 716 flow, removed 29 selfloop flow, removed 4 redundant places. [2023-11-21 22:25:14,429 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 385 flow [2023-11-21 22:25:14,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=385, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-11-21 22:25:14,431 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 31 predicate places. [2023-11-21 22:25:14,431 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 385 flow [2023-11-21 22:25:14,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:14,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:14,431 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 22:25:14,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:25:14,432 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:14,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1152289066, now seen corresponding path program 2 times [2023-11-21 22:25:14,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:14,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082908388] [2023-11-21 22:25:14,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:14,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:14,579 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 22:25:14,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:14,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082908388] [2023-11-21 22:25:14,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082908388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:14,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:14,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:14,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584703116] [2023-11-21 22:25:14,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:14,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:14,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:14,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:14,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:14,607 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:14,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 385 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:14,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:14,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:14,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:14,910 INFO L124 PetriNetUnfolderBase]: 481/897 cut-off events. [2023-11-21 22:25:14,910 INFO L125 PetriNetUnfolderBase]: For 5420/5432 co-relation queries the response was YES. [2023-11-21 22:25:14,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3411 conditions, 897 events. 481/897 cut-off events. For 5420/5432 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 4094 event pairs, 59 based on Foata normal form. 57/951 useless extension candidates. Maximal degree in co-relation 3381. Up to 154 conditions per place. [2023-11-21 22:25:14,919 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 45 selfloop transitions, 25 changer transitions 33/109 dead transitions. [2023-11-21 22:25:14,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 109 transitions, 977 flow [2023-11-21 22:25:14,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:25:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-21 22:25:14,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 226 transitions. [2023-11-21 22:25:14,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.587012987012987 [2023-11-21 22:25:14,922 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 226 transitions. [2023-11-21 22:25:14,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 226 transitions. [2023-11-21 22:25:14,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:14,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 226 transitions. [2023-11-21 22:25:14,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 20.545454545454547) internal successors, (226), 11 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 22:25:14,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 22:25:14,925 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 35.0) internal successors, (420), 12 states have internal predecessors, (420), 0 states have call successors, (0), 0 states 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 22:25:14,925 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 385 flow. Second operand 11 states and 226 transitions. [2023-11-21 22:25:14,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 109 transitions, 977 flow [2023-11-21 22:25:14,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 109 transitions, 900 flow, removed 27 selfloop flow, removed 6 redundant places. [2023-11-21 22:25:14,950 INFO L231 Difference]: Finished difference. Result has 74 places, 51 transitions, 481 flow [2023-11-21 22:25:14,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=340, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=481, PETRI_PLACES=74, PETRI_TRANSITIONS=51} [2023-11-21 22:25:14,952 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 38 predicate places. [2023-11-21 22:25:14,952 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 51 transitions, 481 flow [2023-11-21 22:25:14,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:14,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:14,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:14,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:25:14,953 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:14,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:14,954 INFO L85 PathProgramCache]: Analyzing trace with hash -535422100, now seen corresponding path program 1 times [2023-11-21 22:25:14,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:14,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37227324] [2023-11-21 22:25:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:14,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:14,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:15,123 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:15,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:15,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37227324] [2023-11-21 22:25:15,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37227324] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:15,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159739561] [2023-11-21 22:25:15,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:15,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:15,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:15,131 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:15,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:25:15,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:15,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:15,229 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:15,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:15,573 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:15,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159739561] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:15,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:15,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-21 22:25:15,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669250670] [2023-11-21 22:25:15,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:15,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:25:15,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:15,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:25:15,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:25:15,589 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:15,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 51 transitions, 481 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 22:25:15,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:15,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:15,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:16,108 INFO L124 PetriNetUnfolderBase]: 589/1107 cut-off events. [2023-11-21 22:25:16,108 INFO L125 PetriNetUnfolderBase]: For 10651/10663 co-relation queries the response was YES. [2023-11-21 22:25:16,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4737 conditions, 1107 events. 589/1107 cut-off events. For 10651/10663 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 4828 event pairs, 149 based on Foata normal form. 75/1181 useless extension candidates. Maximal degree in co-relation 4704. Up to 486 conditions per place. [2023-11-21 22:25:16,119 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 65 selfloop transitions, 19 changer transitions 67/157 dead transitions. [2023-11-21 22:25:16,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 157 transitions, 1553 flow [2023-11-21 22:25:16,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-21 22:25:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-21 22:25:16,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 383 transitions. [2023-11-21 22:25:16,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5759398496240602 [2023-11-21 22:25:16,123 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 383 transitions. [2023-11-21 22:25:16,123 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 383 transitions. [2023-11-21 22:25:16,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:16,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 383 transitions. [2023-11-21 22:25:16,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 20.157894736842106) internal successors, (383), 19 states have internal predecessors, (383), 0 states have call successors, (0), 0 states 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 22:25:16,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 22:25:16,128 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states 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 22:25:16,128 INFO L175 Difference]: Start difference. First operand has 74 places, 51 transitions, 481 flow. Second operand 19 states and 383 transitions. [2023-11-21 22:25:16,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 157 transitions, 1553 flow [2023-11-21 22:25:16,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 157 transitions, 1438 flow, removed 40 selfloop flow, removed 9 redundant places. [2023-11-21 22:25:16,164 INFO L231 Difference]: Finished difference. Result has 93 places, 57 transitions, 611 flow [2023-11-21 22:25:16,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=408, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=611, PETRI_PLACES=93, PETRI_TRANSITIONS=57} [2023-11-21 22:25:16,165 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 57 predicate places. [2023-11-21 22:25:16,165 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 57 transitions, 611 flow [2023-11-21 22:25:16,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 22:25:16,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:16,166 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:16,192 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:16,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:16,383 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:16,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:16,384 INFO L85 PathProgramCache]: Analyzing trace with hash 2000756792, now seen corresponding path program 2 times [2023-11-21 22:25:16,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:16,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385385528] [2023-11-21 22:25:16,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:16,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:16,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:16,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385385528] [2023-11-21 22:25:16,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385385528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:16,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613103131] [2023-11-21 22:25:16,549 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:25:16,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:16,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:16,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:16,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 22:25:16,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:25:16,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:16,654 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:16,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:16,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613103131] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:16,839 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2023-11-21 22:25:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030916868] [2023-11-21 22:25:16,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:16,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:25:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:16,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:25:16,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:25:16,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:16,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 57 transitions, 611 flow. Second operand has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 22:25:16,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:16,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:16,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:17,729 INFO L124 PetriNetUnfolderBase]: 877/1635 cut-off events. [2023-11-21 22:25:17,729 INFO L125 PetriNetUnfolderBase]: For 35587/35599 co-relation queries the response was YES. [2023-11-21 22:25:17,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9128 conditions, 1635 events. 877/1635 cut-off events. For 35587/35599 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7996 event pairs, 68 based on Foata normal form. 84/1718 useless extension candidates. Maximal degree in co-relation 9086. Up to 309 conditions per place. [2023-11-21 22:25:17,754 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 88 selfloop transitions, 47 changer transitions 80/221 dead transitions. [2023-11-21 22:25:17,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 221 transitions, 2797 flow [2023-11-21 22:25:17,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-21 22:25:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-21 22:25:17,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 550 transitions. [2023-11-21 22:25:17,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.582010582010582 [2023-11-21 22:25:17,759 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 550 transitions. [2023-11-21 22:25:17,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 550 transitions. [2023-11-21 22:25:17,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:17,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 550 transitions. [2023-11-21 22:25:17,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 20.37037037037037) internal successors, (550), 27 states have internal predecessors, (550), 0 states have call successors, (0), 0 states 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 22:25:17,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 22:25:17,767 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 35.0) internal successors, (980), 28 states have internal predecessors, (980), 0 states have call successors, (0), 0 states 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 22:25:17,768 INFO L175 Difference]: Start difference. First operand has 93 places, 57 transitions, 611 flow. Second operand 27 states and 550 transitions. [2023-11-21 22:25:17,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 221 transitions, 2797 flow [2023-11-21 22:25:17,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 221 transitions, 2188 flow, removed 292 selfloop flow, removed 12 redundant places. [2023-11-21 22:25:17,830 INFO L231 Difference]: Finished difference. Result has 119 places, 73 transitions, 993 flow [2023-11-21 22:25:17,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=993, PETRI_PLACES=119, PETRI_TRANSITIONS=73} [2023-11-21 22:25:17,831 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 83 predicate places. [2023-11-21 22:25:17,831 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 73 transitions, 993 flow [2023-11-21 22:25:17,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states 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 22:25:17,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:17,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:17,857 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:18,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:18,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:18,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:18,046 INFO L85 PathProgramCache]: Analyzing trace with hash -753523617, now seen corresponding path program 1 times [2023-11-21 22:25:18,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:18,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970957562] [2023-11-21 22:25:18,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:18,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:18,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,201 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:18,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970957562] [2023-11-21 22:25:18,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970957562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:18,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814089343] [2023-11-21 22:25:18,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:18,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:18,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:18,203 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:18,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 22:25:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,287 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:25:18,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:18,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:18,354 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:18,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814089343] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:18,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:18,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2023-11-21 22:25:18,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749706631] [2023-11-21 22:25:18,538 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:18,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-21 22:25:18,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:18,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-21 22:25:18,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:25:18,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:18,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 73 transitions, 993 flow. Second operand has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 22:25:18,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:18,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:18,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:19,540 INFO L124 PetriNetUnfolderBase]: 1111/2104 cut-off events. [2023-11-21 22:25:19,541 INFO L125 PetriNetUnfolderBase]: For 80189/80195 co-relation queries the response was YES. [2023-11-21 22:25:19,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14194 conditions, 2104 events. 1111/2104 cut-off events. For 80189/80195 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 11058 event pairs, 153 based on Foata normal form. 69/2170 useless extension candidates. Maximal degree in co-relation 14140. Up to 490 conditions per place. [2023-11-21 22:25:19,576 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 99 selfloop transitions, 51 changer transitions 67/223 dead transitions. [2023-11-21 22:25:19,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 223 transitions, 3541 flow [2023-11-21 22:25:19,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 22:25:19,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-21 22:25:19,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 509 transitions. [2023-11-21 22:25:19,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5817142857142857 [2023-11-21 22:25:19,579 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 509 transitions. [2023-11-21 22:25:19,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 509 transitions. [2023-11-21 22:25:19,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:19,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 509 transitions. [2023-11-21 22:25:19,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 20.36) internal successors, (509), 25 states have internal predecessors, (509), 0 states have call successors, (0), 0 states 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 22:25:19,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 22:25:19,585 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 35.0) internal successors, (910), 26 states have internal predecessors, (910), 0 states have call successors, (0), 0 states 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 22:25:19,585 INFO L175 Difference]: Start difference. First operand has 119 places, 73 transitions, 993 flow. Second operand 25 states and 509 transitions. [2023-11-21 22:25:19,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 223 transitions, 3541 flow [2023-11-21 22:25:19,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 223 transitions, 2967 flow, removed 271 selfloop flow, removed 13 redundant places. [2023-11-21 22:25:19,739 INFO L231 Difference]: Finished difference. Result has 137 places, 84 transitions, 1275 flow [2023-11-21 22:25:19,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=729, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1275, PETRI_PLACES=137, PETRI_TRANSITIONS=84} [2023-11-21 22:25:19,741 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 101 predicate places. [2023-11-21 22:25:19,741 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 84 transitions, 1275 flow [2023-11-21 22:25:19,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.066666666666666) internal successors, (226), 15 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 22:25:19,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:19,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:19,761 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:19,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:19,955 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:19,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -517950779, now seen corresponding path program 2 times [2023-11-21 22:25:19,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:19,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268391742] [2023-11-21 22:25:19,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:19,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:20,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268391742] [2023-11-21 22:25:20,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268391742] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:20,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569061] [2023-11-21 22:25:20,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:25:20,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:20,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:20,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:20,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 22:25:20,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 22:25:20,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:20,204 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-21 22:25:20,205 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:20,264 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:20,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:20,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:20,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569061] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:20,400 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:20,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2023-11-21 22:25:20,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118985340] [2023-11-21 22:25:20,401 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-21 22:25:20,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:20,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-21 22:25:20,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:25:20,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:20,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 84 transitions, 1275 flow. Second operand has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 22:25:20,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:20,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:20,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:21,608 INFO L124 PetriNetUnfolderBase]: 1192/2279 cut-off events. [2023-11-21 22:25:21,608 INFO L125 PetriNetUnfolderBase]: For 122231/122237 co-relation queries the response was YES. [2023-11-21 22:25:21,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16475 conditions, 2279 events. 1192/2279 cut-off events. For 122231/122237 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 12031 event pairs, 38 based on Foata normal form. 132/2410 useless extension candidates. Maximal degree in co-relation 16415. Up to 477 conditions per place. [2023-11-21 22:25:21,654 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 89 selfloop transitions, 76 changer transitions 93/264 dead transitions. [2023-11-21 22:25:21,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 264 transitions, 4785 flow [2023-11-21 22:25:21,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-21 22:25:21,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-21 22:25:21,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 569 transitions. [2023-11-21 22:25:21,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5806122448979592 [2023-11-21 22:25:21,658 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 569 transitions. [2023-11-21 22:25:21,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 569 transitions. [2023-11-21 22:25:21,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:21,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 569 transitions. [2023-11-21 22:25:21,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 20.321428571428573) internal successors, (569), 28 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:21,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 22:25:21,665 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 35.0) internal successors, (1015), 29 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states 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 22:25:21,665 INFO L175 Difference]: Start difference. First operand has 137 places, 84 transitions, 1275 flow. Second operand 28 states and 569 transitions. [2023-11-21 22:25:21,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 264 transitions, 4785 flow [2023-11-21 22:25:21,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 264 transitions, 4052 flow, removed 330 selfloop flow, removed 18 redundant places. [2023-11-21 22:25:21,941 INFO L231 Difference]: Finished difference. Result has 156 places, 103 transitions, 1824 flow [2023-11-21 22:25:21,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1824, PETRI_PLACES=156, PETRI_TRANSITIONS=103} [2023-11-21 22:25:21,942 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 120 predicate places. [2023-11-21 22:25:21,942 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 103 transitions, 1824 flow [2023-11-21 22:25:21,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 15.0625) internal successors, (241), 16 states have internal predecessors, (241), 0 states have call successors, (0), 0 states 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 22:25:21,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:21,943 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:21,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:22,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:22,159 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:22,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1629029965, now seen corresponding path program 3 times [2023-11-21 22:25:22,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621976926] [2023-11-21 22:25:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621976926] [2023-11-21 22:25:22,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621976926] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:22,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564138530] [2023-11-21 22:25:22,408 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:25:22,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:22,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:22,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:22,414 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 22:25:22,501 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-21 22:25:22,501 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:22,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-21 22:25:22,505 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:22,596 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,596 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:22,761 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564138530] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:22,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 22:25:22,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 18 [2023-11-21 22:25:22,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926041331] [2023-11-21 22:25:22,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:22,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-21 22:25:22,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:22,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-21 22:25:22,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-21 22:25:22,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:22,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 103 transitions, 1824 flow. Second operand has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 22:25:22,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:22,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:22,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:24,337 INFO L124 PetriNetUnfolderBase]: 1426/2663 cut-off events. [2023-11-21 22:25:24,338 INFO L125 PetriNetUnfolderBase]: For 178077/178083 co-relation queries the response was YES. [2023-11-21 22:25:24,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21111 conditions, 2663 events. 1426/2663 cut-off events. For 178077/178083 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13645 event pairs, 40 based on Foata normal form. 60/2722 useless extension candidates. Maximal degree in co-relation 21043. Up to 555 conditions per place. [2023-11-21 22:25:24,388 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 114 selfloop transitions, 98 changer transitions 91/309 dead transitions. [2023-11-21 22:25:24,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 309 transitions, 6030 flow [2023-11-21 22:25:24,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-11-21 22:25:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-11-21 22:25:24,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 689 transitions. [2023-11-21 22:25:24,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5789915966386555 [2023-11-21 22:25:24,391 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 689 transitions. [2023-11-21 22:25:24,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 689 transitions. [2023-11-21 22:25:24,392 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:24,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 689 transitions. [2023-11-21 22:25:24,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 20.264705882352942) internal successors, (689), 34 states have internal predecessors, (689), 0 states have call successors, (0), 0 states 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 22:25:24,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 35.0) internal successors, (1225), 35 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 22:25:24,398 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 35.0) internal successors, (1225), 35 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states 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 22:25:24,398 INFO L175 Difference]: Start difference. First operand has 156 places, 103 transitions, 1824 flow. Second operand 34 states and 689 transitions. [2023-11-21 22:25:24,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 309 transitions, 6030 flow [2023-11-21 22:25:24,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 309 transitions, 5056 flow, removed 457 selfloop flow, removed 19 redundant places. [2023-11-21 22:25:24,867 INFO L231 Difference]: Finished difference. Result has 179 places, 125 transitions, 2394 flow [2023-11-21 22:25:24,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1378, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2394, PETRI_PLACES=179, PETRI_TRANSITIONS=125} [2023-11-21 22:25:24,869 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 143 predicate places. [2023-11-21 22:25:24,870 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 125 transitions, 2394 flow [2023-11-21 22:25:24,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 15.263157894736842) internal successors, (290), 19 states have internal predecessors, (290), 0 states have call successors, (0), 0 states 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 22:25:24,870 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:24,871 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:24,897 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:25,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:25,097 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:25,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:25,098 INFO L85 PathProgramCache]: Analyzing trace with hash -222545710, now seen corresponding path program 4 times [2023-11-21 22:25:25,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:25,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73744980] [2023-11-21 22:25:25,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:25,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:25,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:25,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-21 22:25:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-21 22:25:25,200 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-21 22:25:25,200 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-21 22:25:25,201 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (7 of 8 remaining) [2023-11-21 22:25:25,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 8 remaining) [2023-11-21 22:25:25,204 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 8 remaining) [2023-11-21 22:25:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 8 remaining) [2023-11-21 22:25:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 8 remaining) [2023-11-21 22:25:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK (2 of 8 remaining) [2023-11-21 22:25:25,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2023-11-21 22:25:25,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2023-11-21 22:25:25,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:25:25,206 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:25,214 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:25:25,214 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:25:25,259 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated [2023-11-21 22:25:25,263 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: IdentifierExpression #t~pre7 could not be translated [2023-11-21 22:25:25,280 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:25:25 BasicIcfg [2023-11-21 22:25:25,281 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:25:25,281 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:25:25,281 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:25:25,282 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:25:25,282 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:10" (3/4) ... [2023-11-21 22:25:25,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-21 22:25:25,285 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:25:25,286 INFO L158 Benchmark]: Toolchain (without parser) took 16402.28ms. Allocated memory was 155.2MB in the beginning and 323.0MB in the end (delta: 167.8MB). Free memory was 123.0MB in the beginning and 220.2MB in the end (delta: -97.3MB). Peak memory consumption was 71.8MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,287 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:25:25,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 608.04ms. Allocated memory is still 155.2MB. Free memory was 123.0MB in the beginning and 103.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 69.35ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 101.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,288 INFO L158 Benchmark]: Boogie Preprocessor took 49.17ms. Allocated memory is still 155.2MB. Free memory was 101.6MB in the beginning and 99.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,288 INFO L158 Benchmark]: RCFGBuilder took 591.30ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 78.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,289 INFO L158 Benchmark]: TraceAbstraction took 15072.48ms. Allocated memory was 155.2MB in the beginning and 323.0MB in the end (delta: 167.8MB). Free memory was 78.5MB in the beginning and 220.2MB in the end (delta: -141.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. [2023-11-21 22:25:25,289 INFO L158 Benchmark]: Witness Printer took 4.36ms. Allocated memory is still 323.0MB. Free memory is still 220.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:25:25,291 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 115.3MB. Free memory is still 74.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 608.04ms. Allocated memory is still 155.2MB. Free memory was 123.0MB in the beginning and 103.3MB in the end (delta: 19.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 69.35ms. Allocated memory is still 155.2MB. Free memory was 103.3MB in the beginning and 101.6MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 49.17ms. Allocated memory is still 155.2MB. Free memory was 101.6MB in the beginning and 99.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 591.30ms. Allocated memory is still 155.2MB. Free memory was 99.9MB in the beginning and 78.9MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 15072.48ms. Allocated memory was 155.2MB in the beginning and 323.0MB in the end (delta: 167.8MB). Free memory was 78.5MB in the beginning and 220.2MB in the end (delta: -141.8MB). Peak memory consumption was 27.8MB. Max. memory is 16.1GB. * Witness Printer took 4.36ms. Allocated memory is still 323.0MB. Free memory is still 220.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre5 could not be translated - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IdentifierExpression #t~pre7 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: 693]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 693. Possible FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=49, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, i=3, id1={5:0}, id2={3:0}, j=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=0] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=0, k=1] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=1] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=1, k=2] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=2] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=2, k=3] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=3] [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L696] COND TRUE 1 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=3, k=4] [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L698] 1 i = j + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L704] COND TRUE 2 k < 5 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=4] [L706] 2 j = i + 1 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L719] 0 int condJ = j >= (2*5 +6); VAL [\old(argc)=49, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=49, argv={50:51}, condI=0, condJ=1, i=15, id1={5:0}, id2={3:0}, j=16, k=4, k=4] [L721] COND TRUE 0 condI || condJ [L722] CALL 0 reach_error() [L693] COND FALSE 0 !(0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] [L693] 0 __assert_fail ("0", "triangular-2.c", 8, __extension__ __PRETTY_FUNCTION__) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=4, k=4] - 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: 711]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - UnprovableResult [Line: 713]: 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: 714]: 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 5 procedures, 44 locations, 8 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: 14.8s, OverallIterations: 16, TraceHistogramMax: 5, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 8.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1780 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1708 mSDsluCounter, 70 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2946 IncrementalHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 25 mSDtfsCounter, 2946 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 444 GetRequests, 219 SyntacticMatches, 4 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1590 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2394occurred in iteration=15, InterpolantAutomatonStates: 196, 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, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 398 NumberOfCodeBlocks, 398 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 457 ConstructedInterpolants, 0 QuantifiedInterpolants, 1842 SizeOfPredicates, 27 NumberOfNonLiveVariables, 660 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 25 InterpolantComputations, 10 PerfectInterpolantSequences, 0/126 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 22:25:25,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/pthread/triangular-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:25:27,908 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:25:28,048 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2023-11-21 22:25:28,054 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:25:28,055 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:25:28,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:25:28,081 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:25:28,082 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:25:28,083 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:25:28,083 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:25:28,084 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:25:28,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:25:28,085 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:25:28,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:25:28,086 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:25:28,087 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:25:28,087 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:25:28,088 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:25:28,089 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:25:28,089 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:25:28,090 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:25:28,091 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:25:28,091 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:25:28,092 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-21 22:25:28,093 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-21 22:25:28,093 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:25:28,094 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:25:28,094 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:25:28,095 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:25:28,096 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:25:28,096 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:25:28,097 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:25:28,098 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:28,098 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:25:28,099 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:25:28,099 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-21 22:25:28,100 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-21 22:25:28,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:25:28,101 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:25:28,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:25:28,102 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:25:28,102 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-21 22:25:28,103 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_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9ca4ad6de5ce46f9737c47ccc55c2628eaef135acf1b94c234f6d96d13f1ccb1 [2023-11-21 22:25:28,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:25:28,552 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:25:28,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:25:28,556 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:25:28,558 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:25:28,560 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread/triangular-2.i [2023-11-21 22:25:34,002 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:25:34,317 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:25:34,318 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/sv-benchmarks/c/pthread/triangular-2.i [2023-11-21 22:25:34,336 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/d5df7bd47/e7fe7e8331a7460aad774f2b6b22afb6/FLAGbc5a6cec9 [2023-11-21 22:25:34,352 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/data/d5df7bd47/e7fe7e8331a7460aad774f2b6b22afb6 [2023-11-21 22:25:34,354 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:25:34,359 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:25:34,360 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:34,360 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:25:34,367 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:25:34,368 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:34,369 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20b713e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34, skipping insertion in model container [2023-11-21 22:25:34,370 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:34,425 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:25:34,848 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:34,863 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:25:34,906 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:25:34,955 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:34,955 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:25:34,966 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:25:34,968 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34 WrapperNode [2023-11-21 22:25:34,969 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:25:34,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:34,971 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:25:34,971 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:25:34,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,012 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,045 INFO L138 Inliner]: procedures = 172, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49 [2023-11-21 22:25:35,046 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:25:35,047 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:25:35,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:25:35,048 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:25:35,057 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,058 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,062 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,062 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,071 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,075 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,081 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,085 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,093 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:25:35,095 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:25:35,098 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:25:35,098 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:25:35,099 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (1/1) ... [2023-11-21 22:25:35,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:25:35,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:35,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:25:35,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:25:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-21 22:25:35,186 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-21 22:25:35,186 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-21 22:25:35,186 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-21 22:25:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:25:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:25:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:25:35,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:25:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2023-11-21 22:25:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-21 22:25:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:25:35,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:25:35,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:25:35,190 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 22:25:35,342 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:25:35,345 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:25:35,557 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:25:35,811 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:25:35,819 INFO L308 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-21 22:25:35,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:35 BoogieIcfgContainer [2023-11-21 22:25:35,821 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:25:35,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:25:35,826 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:25:35,829 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:25:35,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:25:34" (1/3) ... [2023-11-21 22:25:35,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb3a1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:35, skipping insertion in model container [2023-11-21 22:25:35,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:25:34" (2/3) ... [2023-11-21 22:25:35,831 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cb3a1c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:25:35, skipping insertion in model container [2023-11-21 22:25:35,831 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:25:35" (3/3) ... [2023-11-21 22:25:35,833 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-2.i [2023-11-21 22:25:35,851 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:25:35,851 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-21 22:25:35,851 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:25:35,901 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:25:35,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 78 flow [2023-11-21 22:25:35,981 INFO L124 PetriNetUnfolderBase]: 4/33 cut-off events. [2023-11-21 22:25:35,981 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:35,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 4/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2023-11-21 22:25:35,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 78 flow [2023-11-21 22:25:35,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 36 places, 33 transitions, 72 flow [2023-11-21 22:25:36,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:25:36,010 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;@3d265e5a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:25:36,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-21 22:25:36,015 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:25:36,015 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-11-21 22:25:36,015 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:25:36,015 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:36,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:36,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:36,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:36,022 INFO L85 PathProgramCache]: Analyzing trace with hash 6801, now seen corresponding path program 1 times [2023-11-21 22:25:36,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:36,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1516974004] [2023-11-21 22:25:36,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:36,042 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:36,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:36,047 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:36,072 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-21 22:25:36,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:36,227 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:25:36,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:36,340 INFO L349 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2023-11-21 22:25:36,341 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2023-11-21 22:25:36,374 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 22:25:36,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:36,376 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:36,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1516974004] [2023-11-21 22:25:36,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1516974004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:36,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:36,378 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:36,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958225969] [2023-11-21 22:25:36,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:36,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:36,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:36,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:36,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:36,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-21 22:25:36,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 22:25:36,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:36,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-21 22:25:36,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:36,665 INFO L124 PetriNetUnfolderBase]: 88/193 cut-off events. [2023-11-21 22:25:36,665 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-21 22:25:36,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 193 events. 88/193 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 711 event pairs, 32 based on Foata normal form. 15/191 useless extension candidates. Maximal degree in co-relation 333. Up to 87 conditions per place. [2023-11-21 22:25:36,671 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 18 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-11-21 22:25:36,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 35 transitions, 118 flow [2023-11-21 22:25:36,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:36,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:36,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 72 transitions. [2023-11-21 22:25:36,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6857142857142857 [2023-11-21 22:25:36,686 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 72 transitions. [2023-11-21 22:25:36,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 72 transitions. [2023-11-21 22:25:36,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:36,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 72 transitions. [2023-11-21 22:25:36,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 22:25:36,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:36,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:36,699 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 72 flow. Second operand 3 states and 72 transitions. [2023-11-21 22:25:36,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 35 transitions, 118 flow [2023-11-21 22:25:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 35 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:36,705 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 64 flow [2023-11-21 22:25:36,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=64, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-21 22:25:36,711 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -2 predicate places. [2023-11-21 22:25:36,712 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 64 flow [2023-11-21 22:25:36,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states 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 22:25:36,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:36,713 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-21 22:25:36,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2023-11-21 22:25:36,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:36,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:36,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:36,917 INFO L85 PathProgramCache]: Analyzing trace with hash 6802, now seen corresponding path program 1 times [2023-11-21 22:25:36,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:36,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832856901] [2023-11-21 22:25:36,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:36,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:36,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:36,920 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:36,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-21 22:25:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:37,047 INFO L262 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:37,049 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:37,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:37,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-21 22:25:37,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 22:25:37,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:37,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:37,100 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:37,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832856901] [2023-11-21 22:25:37,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832856901] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:37,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:37,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:37,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804174727] [2023-11-21 22:25:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:37,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:37,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:37,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:37,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 22:25:37,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:37,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:37,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 22:25:37,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:37,214 INFO L124 PetriNetUnfolderBase]: 70/165 cut-off events. [2023-11-21 22:25:37,215 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:37,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 165 events. 70/165 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 624 event pairs, 32 based on Foata normal form. 1/149 useless extension candidates. Maximal degree in co-relation 288. Up to 86 conditions per place. [2023-11-21 22:25:37,219 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-11-21 22:25:37,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 112 flow [2023-11-21 22:25:37,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:37,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:37,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-21 22:25:37,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-21 22:25:37,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:37,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:25:37,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:37,235 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:37,236 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 64 flow. Second operand 3 states and 71 transitions. [2023-11-21 22:25:37,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 112 flow [2023-11-21 22:25:37,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:37,240 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 62 flow [2023-11-21 22:25:37,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-11-21 22:25:37,242 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-21 22:25:37,243 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 62 flow [2023-11-21 22:25:37,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:37,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:37,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:25:37,250 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2023-11-21 22:25:37,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:37,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:37,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:37,447 INFO L85 PathProgramCache]: Analyzing trace with hash 202776937, now seen corresponding path program 1 times [2023-11-21 22:25:37,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:37,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279817917] [2023-11-21 22:25:37,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:37,448 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:37,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:37,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:37,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2023-11-21 22:25:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:37,553 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-21 22:25:37,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:37,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-21 22:25:37,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:37,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:37,674 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 22:25:37,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:37,675 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:37,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279817917] [2023-11-21 22:25:37,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279817917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:37,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:37,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:37,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799164160] [2023-11-21 22:25:37,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:37,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:37,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:37,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:37,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:37,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 17 out of 35 [2023-11-21 22:25:37,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:37,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:37,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 17 of 35 [2023-11-21 22:25:37,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:37,821 INFO L124 PetriNetUnfolderBase]: 70/164 cut-off events. [2023-11-21 22:25:37,821 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:37,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 164 events. 70/164 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 618 event pairs, 32 based on Foata normal form. 3/151 useless extension candidates. Maximal degree in co-relation 287. Up to 86 conditions per place. [2023-11-21 22:25:37,827 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 17 selfloop transitions, 2 changer transitions 0/32 dead transitions. [2023-11-21 22:25:37,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 110 flow [2023-11-21 22:25:37,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 71 transitions. [2023-11-21 22:25:37,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6761904761904762 [2023-11-21 22:25:37,831 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:37,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 71 transitions. [2023-11-21 22:25:37,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states 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 22:25:37,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:37,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:37,838 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 62 flow. Second operand 3 states and 71 transitions. [2023-11-21 22:25:37,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 110 flow [2023-11-21 22:25:37,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 32 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:37,845 INFO L231 Difference]: Finished difference. Result has 31 places, 26 transitions, 60 flow [2023-11-21 22:25:37,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=26} [2023-11-21 22:25:37,847 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -5 predicate places. [2023-11-21 22:25:37,848 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 26 transitions, 60 flow [2023-11-21 22:25:37,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:37,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:37,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:25:37,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:38,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:38,051 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:38,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash 202776936, now seen corresponding path program 1 times [2023-11-21 22:25:38,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:38,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [205716291] [2023-11-21 22:25:38,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:38,053 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:38,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:38,055 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:38,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2023-11-21 22:25:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:38,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 22:25:38,132 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:38,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2023-11-21 22:25:38,159 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-21 22:25:38,160 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-21 22:25:38,178 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 22:25:38,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:38,178 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:38,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [205716291] [2023-11-21 22:25:38,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [205716291] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:38,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:38,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:25:38,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937907325] [2023-11-21 22:25:38,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:38,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:38,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:38,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:38,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:38,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-21 22:25:38,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 22:25:38,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:38,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-21 22:25:38,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:38,301 INFO L124 PetriNetUnfolderBase]: 73/166 cut-off events. [2023-11-21 22:25:38,301 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:38,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306 conditions, 166 events. 73/166 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 600 event pairs, 34 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 295. Up to 92 conditions per place. [2023-11-21 22:25:38,305 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 18 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-11-21 22:25:38,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 31 transitions, 110 flow [2023-11-21 22:25:38,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:38,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:38,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 69 transitions. [2023-11-21 22:25:38,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6571428571428571 [2023-11-21 22:25:38,313 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 69 transitions. [2023-11-21 22:25:38,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 69 transitions. [2023-11-21 22:25:38,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:38,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 69 transitions. [2023-11-21 22:25:38,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states 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 22:25:38,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:38,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:38,316 INFO L175 Difference]: Start difference. First operand has 31 places, 26 transitions, 60 flow. Second operand 3 states and 69 transitions. [2023-11-21 22:25:38,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 31 transitions, 110 flow [2023-11-21 22:25:38,317 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 31 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:38,318 INFO L231 Difference]: Finished difference. Result has 30 places, 25 transitions, 58 flow [2023-11-21 22:25:38,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=30, PETRI_TRANSITIONS=25} [2023-11-21 22:25:38,319 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -6 predicate places. [2023-11-21 22:25:38,319 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 25 transitions, 58 flow [2023-11-21 22:25:38,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states 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 22:25:38,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:38,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:38,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:38,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:38,522 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:38,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:38,523 INFO L85 PathProgramCache]: Analyzing trace with hash 665434620, now seen corresponding path program 1 times [2023-11-21 22:25:38,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:38,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2106217359] [2023-11-21 22:25:38,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:38,524 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:38,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:38,525 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:38,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2023-11-21 22:25:38,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:38,627 INFO L262 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:38,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:38,824 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|) (_ bv0 1)) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1))))) is different from true [2023-11-21 22:25:38,825 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 22:25:38,825 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:38,825 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:38,825 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2106217359] [2023-11-21 22:25:38,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2106217359] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:38,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:38,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:38,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676146765] [2023-11-21 22:25:38,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:38,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:38,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:38,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:38,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:25:38,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-21 22:25:38,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 25 transitions, 58 flow. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:38,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:38,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-21 22:25:38,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:38,941 INFO L124 PetriNetUnfolderBase]: 97/205 cut-off events. [2023-11-21 22:25:38,941 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-11-21 22:25:38,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 386 conditions, 205 events. 97/205 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 750 event pairs, 34 based on Foata normal form. 9/196 useless extension candidates. Maximal degree in co-relation 374. Up to 93 conditions per place. [2023-11-21 22:25:38,944 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 20 selfloop transitions, 8 changer transitions 0/37 dead transitions. [2023-11-21 22:25:38,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 37 transitions, 138 flow [2023-11-21 22:25:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:38,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-21 22:25:38,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-21 22:25:38,946 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-21 22:25:38,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-21 22:25:38,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:38,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-21 22:25:38,947 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:38,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:38,948 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:38,949 INFO L175 Difference]: Start difference. First operand has 30 places, 25 transitions, 58 flow. Second operand 4 states and 73 transitions. [2023-11-21 22:25:38,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 37 transitions, 138 flow [2023-11-21 22:25:38,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:38,951 INFO L231 Difference]: Finished difference. Result has 32 places, 31 transitions, 103 flow [2023-11-21 22:25:38,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=32, PETRI_TRANSITIONS=31} [2023-11-21 22:25:38,952 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-11-21 22:25:38,952 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 31 transitions, 103 flow [2023-11-21 22:25:38,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states 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 22:25:38,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:38,953 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:38,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:39,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:39,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:39,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:39,157 INFO L85 PathProgramCache]: Analyzing trace with hash 665435715, now seen corresponding path program 1 times [2023-11-21 22:25:39,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:39,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574830917] [2023-11-21 22:25:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:39,158 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:39,159 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:39,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2023-11-21 22:25:39,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:39,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:25:39,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:39,362 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 22:25:39,362 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:39,362 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:39,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574830917] [2023-11-21 22:25:39,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [574830917] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:39,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:39,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:25:39,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480836686] [2023-11-21 22:25:39,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:39,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:39,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:39,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:39,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:39,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:39,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 31 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:39,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:39,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:39,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:39,710 INFO L124 PetriNetUnfolderBase]: 476/836 cut-off events. [2023-11-21 22:25:39,710 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-21 22:25:39,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2086 conditions, 836 events. 476/836 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3864 event pairs, 49 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 2074. Up to 420 conditions per place. [2023-11-21 22:25:39,719 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 68 selfloop transitions, 13 changer transitions 0/88 dead transitions. [2023-11-21 22:25:39,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 88 transitions, 463 flow [2023-11-21 22:25:39,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:25:39,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:25:39,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 174 transitions. [2023-11-21 22:25:39,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6214285714285714 [2023-11-21 22:25:39,723 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 174 transitions. [2023-11-21 22:25:39,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 174 transitions. [2023-11-21 22:25:39,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:39,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 174 transitions. [2023-11-21 22:25:39,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.75) internal successors, (174), 8 states have internal predecessors, (174), 0 states have call successors, (0), 0 states 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 22:25:39,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:25:39,730 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:25:39,730 INFO L175 Difference]: Start difference. First operand has 32 places, 31 transitions, 103 flow. Second operand 8 states and 174 transitions. [2023-11-21 22:25:39,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 88 transitions, 463 flow [2023-11-21 22:25:39,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 88 transitions, 444 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:39,737 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 191 flow [2023-11-21 22:25:39,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=191, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-11-21 22:25:39,741 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 7 predicate places. [2023-11-21 22:25:39,742 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 191 flow [2023-11-21 22:25:39,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:39,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:39,742 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:39,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:39,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:39,945 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:39,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:39,946 INFO L85 PathProgramCache]: Analyzing trace with hash -846362831, now seen corresponding path program 1 times [2023-11-21 22:25:39,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:39,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2048357949] [2023-11-21 22:25:39,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:39,947 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:39,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:39,948 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:39,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2023-11-21 22:25:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:40,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:40,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:40,227 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1))) (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|) (_ bv0 1)))) is different from true [2023-11-21 22:25:40,242 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 22:25:40,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:40,243 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:40,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2048357949] [2023-11-21 22:25:40,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2048357949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:40,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:40,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162476554] [2023-11-21 22:25:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:40,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:40,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:40,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:25:40,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-21 22:25:40,271 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 22:25:40,271 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:40,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-21 22:25:40,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:40,430 INFO L124 PetriNetUnfolderBase]: 292/590 cut-off events. [2023-11-21 22:25:40,431 INFO L125 PetriNetUnfolderBase]: For 341/435 co-relation queries the response was YES. [2023-11-21 22:25:40,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1641 conditions, 590 events. 292/590 cut-off events. For 341/435 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3105 event pairs, 81 based on Foata normal form. 8/547 useless extension candidates. Maximal degree in co-relation 1622. Up to 307 conditions per place. [2023-11-21 22:25:40,441 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 21 selfloop transitions, 12 changer transitions 0/55 dead transitions. [2023-11-21 22:25:40,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 55 transitions, 301 flow [2023-11-21 22:25:40,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:40,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:40,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-21 22:25:40,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-21 22:25:40,444 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-21 22:25:40,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-21 22:25:40,444 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:40,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-21 22:25:40,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:40,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:40,446 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:40,447 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 191 flow. Second operand 4 states and 73 transitions. [2023-11-21 22:25:40,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 55 transitions, 301 flow [2023-11-21 22:25:40,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 55 transitions, 301 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:40,453 INFO L231 Difference]: Finished difference. Result has 47 places, 49 transitions, 258 flow [2023-11-21 22:25:40,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=47, PETRI_TRANSITIONS=49} [2023-11-21 22:25:40,455 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 11 predicate places. [2023-11-21 22:25:40,455 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 49 transitions, 258 flow [2023-11-21 22:25:40,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 22:25:40,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:40,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:40,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2023-11-21 22:25:40,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:40,659 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:40,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:40,660 INFO L85 PathProgramCache]: Analyzing trace with hash -846362676, now seen corresponding path program 1 times [2023-11-21 22:25:40,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:40,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001730815] [2023-11-21 22:25:40,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:40,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:40,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:40,666 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:40,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2023-11-21 22:25:40,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:40,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:40,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:40,936 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|) (_ bv0 1)) (= (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|) (_ bv0 1)) (= |c_#valid| (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1))))) is different from true [2023-11-21 22:25:40,951 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 22:25:40,952 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:40,952 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:40,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001730815] [2023-11-21 22:25:40,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001730815] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:40,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:40,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:40,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646337350] [2023-11-21 22:25:40,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:40,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:25:40,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-21 22:25:40,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 49 transitions, 258 flow. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 22:25:40,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:40,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-21 22:25:40,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:41,115 INFO L124 PetriNetUnfolderBase]: 302/616 cut-off events. [2023-11-21 22:25:41,115 INFO L125 PetriNetUnfolderBase]: For 686/882 co-relation queries the response was YES. [2023-11-21 22:25:41,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2106 conditions, 616 events. 302/616 cut-off events. For 686/882 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3280 event pairs, 81 based on Foata normal form. 12/577 useless extension candidates. Maximal degree in co-relation 2084. Up to 323 conditions per place. [2023-11-21 22:25:41,125 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 26 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2023-11-21 22:25:41,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 396 flow [2023-11-21 22:25:41,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:41,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-21 22:25:41,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-21 22:25:41,126 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-21 22:25:41,127 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-21 22:25:41,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:41,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-21 22:25:41,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:41,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:41,128 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:41,129 INFO L175 Difference]: Start difference. First operand has 47 places, 49 transitions, 258 flow. Second operand 4 states and 73 transitions. [2023-11-21 22:25:41,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 396 flow [2023-11-21 22:25:41,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:41,135 INFO L231 Difference]: Finished difference. Result has 49 places, 54 transitions, 320 flow [2023-11-21 22:25:41,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=320, PETRI_PLACES=49, PETRI_TRANSITIONS=54} [2023-11-21 22:25:41,136 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 13 predicate places. [2023-11-21 22:25:41,136 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 54 transitions, 320 flow [2023-11-21 22:25:41,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 0 states have call successors, (0), 0 states 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 22:25:41,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:41,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:41,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:41,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:41,339 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:41,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:41,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1571463786, now seen corresponding path program 1 times [2023-11-21 22:25:41,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:41,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1574631281] [2023-11-21 22:25:41,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:41,341 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:41,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:41,342 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:41,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2023-11-21 22:25:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:41,429 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:25:41,430 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:41,456 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 22:25:41,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:41,457 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:41,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1574631281] [2023-11-21 22:25:41,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1574631281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:41,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:41,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:41,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051544744] [2023-11-21 22:25:41,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:41,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:41,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:41,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:41,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:41,461 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-21 22:25:41,462 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 54 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 22:25:41,462 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:41,462 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-21 22:25:41,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:41,608 INFO L124 PetriNetUnfolderBase]: 331/649 cut-off events. [2023-11-21 22:25:41,609 INFO L125 PetriNetUnfolderBase]: For 1270/1667 co-relation queries the response was YES. [2023-11-21 22:25:41,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2623 conditions, 649 events. 331/649 cut-off events. For 1270/1667 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3400 event pairs, 62 based on Foata normal form. 42/622 useless extension candidates. Maximal degree in co-relation 2601. Up to 358 conditions per place. [2023-11-21 22:25:41,621 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 37 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2023-11-21 22:25:41,621 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 517 flow [2023-11-21 22:25:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:41,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:41,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 77 transitions. [2023-11-21 22:25:41,623 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-21 22:25:41,623 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 77 transitions. [2023-11-21 22:25:41,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 77 transitions. [2023-11-21 22:25:41,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:41,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 77 transitions. [2023-11-21 22:25:41,624 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 22:25:41,625 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:41,625 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:41,625 INFO L175 Difference]: Start difference. First operand has 49 places, 54 transitions, 320 flow. Second operand 3 states and 77 transitions. [2023-11-21 22:25:41,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 517 flow [2023-11-21 22:25:41,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 497 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:41,635 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 358 flow [2023-11-21 22:25:41,635 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=358, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-11-21 22:25:41,637 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-11-21 22:25:41,637 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 358 flow [2023-11-21 22:25:41,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 22:25:41,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:41,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:41,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:41,845 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 92591260, now seen corresponding path program 1 times [2023-11-21 22:25:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [255878986] [2023-11-21 22:25:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:41,847 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:41,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:41,848 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:41,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2023-11-21 22:25:41,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:41,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 22:25:41,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:41,947 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 22:25:41,947 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:41,947 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:41,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [255878986] [2023-11-21 22:25:41,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [255878986] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:41,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:41,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:41,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155594140] [2023-11-21 22:25:41,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:41,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:25:41,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:41,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:25:41,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:25:41,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 35 [2023-11-21 22:25:41,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 22:25:41,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:41,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 35 [2023-11-21 22:25:41,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:42,113 INFO L124 PetriNetUnfolderBase]: 347/749 cut-off events. [2023-11-21 22:25:42,113 INFO L125 PetriNetUnfolderBase]: For 1923/2279 co-relation queries the response was YES. [2023-11-21 22:25:42,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3105 conditions, 749 events. 347/749 cut-off events. For 1923/2279 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4468 event pairs, 73 based on Foata normal form. 50/749 useless extension candidates. Maximal degree in co-relation 3083. Up to 380 conditions per place. [2023-11-21 22:25:42,124 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 38 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-21 22:25:42,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 70 transitions, 569 flow [2023-11-21 22:25:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:25:42,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:25:42,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 75 transitions. [2023-11-21 22:25:42,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2023-11-21 22:25:42,126 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 75 transitions. [2023-11-21 22:25:42,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 75 transitions. [2023-11-21 22:25:42,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:42,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 75 transitions. [2023-11-21 22:25:42,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states 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 22:25:42,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:42,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states 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 22:25:42,128 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 358 flow. Second operand 3 states and 75 transitions. [2023-11-21 22:25:42,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 70 transitions, 569 flow [2023-11-21 22:25:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 70 transitions, 557 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:42,136 INFO L231 Difference]: Finished difference. Result has 52 places, 58 transitions, 398 flow [2023-11-21 22:25:42,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=398, PETRI_PLACES=52, PETRI_TRANSITIONS=58} [2023-11-21 22:25:42,138 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 16 predicate places. [2023-11-21 22:25:42,138 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 58 transitions, 398 flow [2023-11-21 22:25:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states 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 22:25:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:42,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:42,146 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:42,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:42,346 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:42,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:42,346 INFO L85 PathProgramCache]: Analyzing trace with hash -467443401, now seen corresponding path program 1 times [2023-11-21 22:25:42,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:42,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209207919] [2023-11-21 22:25:42,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:42,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:42,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:42,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:42,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2023-11-21 22:25:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:42,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:42,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:42,605 WARN L876 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (_ bv0 1) (select (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)) (= (_ bv0 1) (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|)) (= (store (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |c_#valid|))) is different from true [2023-11-21 22:25:42,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:42,635 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:42,635 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:42,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209207919] [2023-11-21 22:25:42,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209207919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:42,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:42,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:42,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630648409] [2023-11-21 22:25:42,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:42,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:42,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:42,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:42,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=4, Unknown=1, NotChecked=2, Total=12 [2023-11-21 22:25:42,638 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 35 [2023-11-21 22:25:42,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 58 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:42,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:42,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 35 [2023-11-21 22:25:42,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:42,785 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 25#L696-5true, 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-21 22:25:42,786 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is not cut-off event [2023-11-21 22:25:42,786 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-21 22:25:42,786 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is not cut-off event [2023-11-21 22:25:42,786 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is not cut-off event [2023-11-21 22:25:42,794 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([175] L721-1-->main_returnLabel#1: Formula: (and (= (_ bv0 32) |v_ULTIMATE.start_main_#res#1_32|) (= (store (store |v_#valid_83| |v_ULTIMATE.start_main_~#id1~0#1.base_40| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_32| (_ bv0 1)) |v_#valid_82|)) InVars {ULTIMATE.start_main_~#id2~0#1.base=|v_ULTIMATE.start_main_~#id2~0#1.base_32|, #valid=|v_#valid_83|, ULTIMATE.start_main_~#id1~0#1.base=|v_ULTIMATE.start_main_~#id1~0#1.base_40|} OutVars{ULTIMATE.start_main_~#id2~0#1.offset=|v_ULTIMATE.start_main_~#id2~0#1.offset_28|, ULTIMATE.start_main_~#id1~0#1.offset=|v_ULTIMATE.start_main_~#id1~0#1.offset_32|, ULTIMATE.start_main_#res#1=|v_ULTIMATE.start_main_#res#1_32|, #valid=|v_#valid_82|} AuxVars[] AssignedVars[ULTIMATE.start_main_~#id2~0#1.offset, ULTIMATE.start_main_#res#1, #valid, ULTIMATE.start_main_~#id2~0#1.base, ULTIMATE.start_main_~#id1~0#1.offset, ULTIMATE.start_main_~#id1~0#1.base][27], [9#t1EXITtrue, 33#L707true, t1Thread1of1ForFork0InUse, 29#main_returnLabel#1true, 385#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ BitVec 32))) (and (= (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46|) (_ bv0 1)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_46| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_38|)))), t2Thread1of1ForFork1InUse, 157#(and (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), 213#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ BitVec 32))) (and (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44|)) (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_44| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_36|)))), Black: 165#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 131#(and (= ~j~0 (_ bv6 32)) (= ~i~0 (_ bv3 32))), 331#(= (_ bv0 32) t2Thread1of1ForFork1_~k~1), Black: 169#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 126#true, Black: 167#(and (= ~j~0 (_ bv6 32)) (= |ULTIMATE.start_main_~condJ~0#1| (_ bv0 32)) (= ~i~0 (_ bv3 32)) (= |ULTIMATE.start_main_~condI~0#1| (_ bv0 32))), Black: 278#(= (_ bv0 32) t1Thread1of1ForFork0_~k~0), 255#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_45| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_37|)))), 123#(exists ((|v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ BitVec 32)) (|v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ BitVec 32))) (and (= (store (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv0 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35| (_ bv0 1)) |#valid|) (= (_ bv0 1) (select |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43|)) (= (_ bv0 1) (select (store |ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#id1~0#1.base_43| (_ bv1 1)) |v_ULTIMATE.start_main_~#id2~0#1.base_35|))))]) [2023-11-21 22:25:42,794 INFO L294 olderBase$Statistics]: this new event has 19 ancestors and is not cut-off event [2023-11-21 22:25:42,794 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-21 22:25:42,795 INFO L297 olderBase$Statistics]: existing Event has 19 ancestors and is not cut-off event [2023-11-21 22:25:42,795 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is not cut-off event [2023-11-21 22:25:42,809 INFO L124 PetriNetUnfolderBase]: 360/741 cut-off events. [2023-11-21 22:25:42,809 INFO L125 PetriNetUnfolderBase]: For 2171/2616 co-relation queries the response was YES. [2023-11-21 22:25:42,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 741 events. 360/741 cut-off events. For 2171/2616 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4178 event pairs, 106 based on Foata normal form. 7/667 useless extension candidates. Maximal degree in co-relation 3270. Up to 377 conditions per place. [2023-11-21 22:25:42,820 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 28 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2023-11-21 22:25:42,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 68 transitions, 589 flow [2023-11-21 22:25:42,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:42,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:42,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 73 transitions. [2023-11-21 22:25:42,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5214285714285715 [2023-11-21 22:25:42,822 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 73 transitions. [2023-11-21 22:25:42,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 73 transitions. [2023-11-21 22:25:42,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:42,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 73 transitions. [2023-11-21 22:25:42,823 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:42,824 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:42,824 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:42,824 INFO L175 Difference]: Start difference. First operand has 52 places, 58 transitions, 398 flow. Second operand 4 states and 73 transitions. [2023-11-21 22:25:42,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 68 transitions, 589 flow [2023-11-21 22:25:42,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:25:42,832 INFO L231 Difference]: Finished difference. Result has 55 places, 60 transitions, 470 flow [2023-11-21 22:25:42,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=55, PETRI_TRANSITIONS=60} [2023-11-21 22:25:42,833 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 19 predicate places. [2023-11-21 22:25:42,833 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 60 transitions, 470 flow [2023-11-21 22:25:42,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 22:25:42,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:42,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:42,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:43,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:43,048 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:43,049 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:43,049 INFO L85 PathProgramCache]: Analyzing trace with hash 626340986, now seen corresponding path program 1 times [2023-11-21 22:25:43,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:43,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [74312420] [2023-11-21 22:25:43,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:43,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:43,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:43,050 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:43,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2023-11-21 22:25:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:43,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:25:43,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:43,200 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 22:25:43,200 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:43,201 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:43,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [74312420] [2023-11-21 22:25:43,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [74312420] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:43,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:43,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671174138] [2023-11-21 22:25:43,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:43,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:43,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:43,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:43,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:43,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 60 transitions, 470 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:43,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:43,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:43,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:43,571 INFO L124 PetriNetUnfolderBase]: 711/1258 cut-off events. [2023-11-21 22:25:43,571 INFO L125 PetriNetUnfolderBase]: For 5229/5319 co-relation queries the response was YES. [2023-11-21 22:25:43,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5878 conditions, 1258 events. 711/1258 cut-off events. For 5229/5319 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6528 event pairs, 57 based on Foata normal form. 24/1260 useless extension candidates. Maximal degree in co-relation 5853. Up to 585 conditions per place. [2023-11-21 22:25:43,588 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 90 selfloop transitions, 22 changer transitions 0/119 dead transitions. [2023-11-21 22:25:43,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 119 transitions, 1178 flow [2023-11-21 22:25:43,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:25:43,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-21 22:25:43,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 168 transitions. [2023-11-21 22:25:43,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:25:43,590 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 168 transitions. [2023-11-21 22:25:43,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 168 transitions. [2023-11-21 22:25:43,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:43,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 168 transitions. [2023-11-21 22:25:43,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 21.0) internal successors, (168), 8 states have internal predecessors, (168), 0 states have call successors, (0), 0 states 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 22:25:43,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:25:43,592 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 22:25:43,593 INFO L175 Difference]: Start difference. First operand has 55 places, 60 transitions, 470 flow. Second operand 8 states and 168 transitions. [2023-11-21 22:25:43,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 119 transitions, 1178 flow [2023-11-21 22:25:43,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 119 transitions, 1149 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:43,606 INFO L231 Difference]: Finished difference. Result has 65 places, 73 transitions, 604 flow [2023-11-21 22:25:43,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=604, PETRI_PLACES=65, PETRI_TRANSITIONS=73} [2023-11-21 22:25:43,607 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-11-21 22:25:43,607 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 73 transitions, 604 flow [2023-11-21 22:25:43,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:43,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:43,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:43,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:43,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:43,810 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:43,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:43,810 INFO L85 PathProgramCache]: Analyzing trace with hash 43846129, now seen corresponding path program 1 times [2023-11-21 22:25:43,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:43,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [588931786] [2023-11-21 22:25:43,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:43,811 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:43,814 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:43,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2023-11-21 22:25:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:43,898 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:25:43,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:43,967 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 22:25:43,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:43,967 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:43,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [588931786] [2023-11-21 22:25:43,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [588931786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:43,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:43,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:43,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664712656] [2023-11-21 22:25:43,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:43,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:43,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:43,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:43,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:43,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:43,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 73 transitions, 604 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:43,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:43,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:43,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:44,571 INFO L124 PetriNetUnfolderBase]: 1066/1862 cut-off events. [2023-11-21 22:25:44,571 INFO L125 PetriNetUnfolderBase]: For 9510/9640 co-relation queries the response was YES. [2023-11-21 22:25:44,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9535 conditions, 1862 events. 1066/1862 cut-off events. For 9510/9640 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 10374 event pairs, 165 based on Foata normal form. 40/1871 useless extension candidates. Maximal degree in co-relation 9505. Up to 895 conditions per place. [2023-11-21 22:25:44,599 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 148 selfloop transitions, 33 changer transitions 0/188 dead transitions. [2023-11-21 22:25:44,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 188 transitions, 2046 flow [2023-11-21 22:25:44,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:44,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 216 transitions. [2023-11-21 22:25:44,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6171428571428571 [2023-11-21 22:25:44,602 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 216 transitions. [2023-11-21 22:25:44,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 216 transitions. [2023-11-21 22:25:44,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:44,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 216 transitions. [2023-11-21 22:25:44,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.6) internal successors, (216), 10 states have internal predecessors, (216), 0 states have call successors, (0), 0 states 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 22:25:44,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:44,605 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:44,605 INFO L175 Difference]: Start difference. First operand has 65 places, 73 transitions, 604 flow. Second operand 10 states and 216 transitions. [2023-11-21 22:25:44,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 188 transitions, 2046 flow [2023-11-21 22:25:44,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 188 transitions, 2040 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:44,630 INFO L231 Difference]: Finished difference. Result has 82 places, 98 transitions, 950 flow [2023-11-21 22:25:44,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=950, PETRI_PLACES=82, PETRI_TRANSITIONS=98} [2023-11-21 22:25:44,632 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 46 predicate places. [2023-11-21 22:25:44,632 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 98 transitions, 950 flow [2023-11-21 22:25:44,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:44,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:44,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:44,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:44,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:44,835 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:44,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:44,836 INFO L85 PathProgramCache]: Analyzing trace with hash 958131919, now seen corresponding path program 2 times [2023-11-21 22:25:44,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:44,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [513295945] [2023-11-21 22:25:44,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:25:44,836 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:44,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:44,838 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:44,871 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2023-11-21 22:25:44,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:25:44,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:44,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-21 22:25:44,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:44,989 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 22:25:44,989 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:44,990 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:44,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [513295945] [2023-11-21 22:25:44,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [513295945] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:44,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:44,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:44,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483301893] [2023-11-21 22:25:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:45,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:45,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 98 transitions, 950 flow. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:45,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:45,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:45,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:45,659 INFO L124 PetriNetUnfolderBase]: 1367/2362 cut-off events. [2023-11-21 22:25:45,659 INFO L125 PetriNetUnfolderBase]: For 17556/17750 co-relation queries the response was YES. [2023-11-21 22:25:45,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13580 conditions, 2362 events. 1367/2362 cut-off events. For 17556/17750 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 182 based on Foata normal form. 54/2371 useless extension candidates. Maximal degree in co-relation 13540. Up to 1195 conditions per place. [2023-11-21 22:25:45,740 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 154 selfloop transitions, 40 changer transitions 0/201 dead transitions. [2023-11-21 22:25:45,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 201 transitions, 2401 flow [2023-11-21 22:25:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 210 transitions. [2023-11-21 22:25:45,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:25:45,743 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 210 transitions. [2023-11-21 22:25:45,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 210 transitions. [2023-11-21 22:25:45,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:45,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 210 transitions. [2023-11-21 22:25:45,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.0) internal successors, (210), 10 states have internal predecessors, (210), 0 states have call successors, (0), 0 states 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 22:25:45,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:45,746 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:45,746 INFO L175 Difference]: Start difference. First operand has 82 places, 98 transitions, 950 flow. Second operand 10 states and 210 transitions. [2023-11-21 22:25:45,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 201 transitions, 2401 flow [2023-11-21 22:25:45,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 201 transitions, 2273 flow, removed 64 selfloop flow, removed 0 redundant places. [2023-11-21 22:25:45,809 INFO L231 Difference]: Finished difference. Result has 98 places, 117 transitions, 1255 flow [2023-11-21 22:25:45,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=894, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=98, PETRI_TRANSITIONS=117} [2023-11-21 22:25:45,810 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 62 predicate places. [2023-11-21 22:25:45,810 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 117 transitions, 1255 flow [2023-11-21 22:25:45,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states 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 22:25:45,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:45,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:45,820 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:46,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:46,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:46,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:46,016 INFO L85 PathProgramCache]: Analyzing trace with hash -1255130824, now seen corresponding path program 1 times [2023-11-21 22:25:46,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:46,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262831198] [2023-11-21 22:25:46,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:46,016 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:46,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:46,017 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:46,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2023-11-21 22:25:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:46,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 22:25:46,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:46,347 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 22:25:46,347 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:46,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:46,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262831198] [2023-11-21 22:25:46,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262831198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:46,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:46,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:25:46,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080653693] [2023-11-21 22:25:46,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:46,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:46,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:46,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:46,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:46,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 35 [2023-11-21 22:25:46,434 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 117 transitions, 1255 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:46,434 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:46,434 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 35 [2023-11-21 22:25:46,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:46,836 INFO L124 PetriNetUnfolderBase]: 609/1336 cut-off events. [2023-11-21 22:25:46,836 INFO L125 PetriNetUnfolderBase]: For 8959/9696 co-relation queries the response was YES. [2023-11-21 22:25:46,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7423 conditions, 1336 events. 609/1336 cut-off events. For 8959/9696 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8898 event pairs, 153 based on Foata normal form. 159/1401 useless extension candidates. Maximal degree in co-relation 7374. Up to 687 conditions per place. [2023-11-21 22:25:46,862 INFO L140 encePairwiseOnDemand]: 32/35 looper letters, 41 selfloop transitions, 2 changer transitions 0/124 dead transitions. [2023-11-21 22:25:46,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 124 transitions, 1411 flow [2023-11-21 22:25:46,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:25:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 84 transitions. [2023-11-21 22:25:46,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-11-21 22:25:46,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 84 transitions. [2023-11-21 22:25:46,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 84 transitions. [2023-11-21 22:25:46,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:46,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 84 transitions. [2023-11-21 22:25:46,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 22:25:46,867 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:46,867 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 35.0) internal successors, (175), 5 states have internal predecessors, (175), 0 states have call successors, (0), 0 states 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 22:25:46,867 INFO L175 Difference]: Start difference. First operand has 98 places, 117 transitions, 1255 flow. Second operand 4 states and 84 transitions. [2023-11-21 22:25:46,867 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 124 transitions, 1411 flow [2023-11-21 22:25:46,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 124 transitions, 1354 flow, removed 21 selfloop flow, removed 3 redundant places. [2023-11-21 22:25:46,900 INFO L231 Difference]: Finished difference. Result has 97 places, 116 transitions, 1192 flow [2023-11-21 22:25:46,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1188, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1192, PETRI_PLACES=97, PETRI_TRANSITIONS=116} [2023-11-21 22:25:46,902 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 61 predicate places. [2023-11-21 22:25:46,902 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 116 transitions, 1192 flow [2023-11-21 22:25:46,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states 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 22:25:46,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:46,903 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 22:25:46,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:47,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:47,112 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:47,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:47,113 INFO L85 PathProgramCache]: Analyzing trace with hash -602590980, now seen corresponding path program 1 times [2023-11-21 22:25:47,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:47,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1910747532] [2023-11-21 22:25:47,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:47,113 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:47,114 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:47,115 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:47,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2023-11-21 22:25:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:47,195 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:47,196 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:47,275 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 22:25:47,276 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:47,276 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:47,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1910747532] [2023-11-21 22:25:47,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1910747532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:47,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:47,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:47,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936935270] [2023-11-21 22:25:47,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:47,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:47,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:47,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:47,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 116 transitions, 1192 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:47,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:47,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:47,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:48,354 INFO L124 PetriNetUnfolderBase]: 1955/3400 cut-off events. [2023-11-21 22:25:48,355 INFO L125 PetriNetUnfolderBase]: For 32822/32826 co-relation queries the response was YES. [2023-11-21 22:25:48,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20411 conditions, 3400 events. 1955/3400 cut-off events. For 32822/32826 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 21227 event pairs, 252 based on Foata normal form. 37/3436 useless extension candidates. Maximal degree in co-relation 20362. Up to 1590 conditions per place. [2023-11-21 22:25:48,382 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 75 selfloop transitions, 15 changer transitions 180/276 dead transitions. [2023-11-21 22:25:48,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 276 transitions, 3497 flow [2023-11-21 22:25:48,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:25:48,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-21 22:25:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 321 transitions. [2023-11-21 22:25:48,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6114285714285714 [2023-11-21 22:25:48,385 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 321 transitions. [2023-11-21 22:25:48,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 321 transitions. [2023-11-21 22:25:48,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:48,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 321 transitions. [2023-11-21 22:25:48,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 21.4) internal successors, (321), 15 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:25:48,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 22:25:48,390 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 35.0) internal successors, (560), 16 states have internal predecessors, (560), 0 states have call successors, (0), 0 states 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 22:25:48,391 INFO L175 Difference]: Start difference. First operand has 97 places, 116 transitions, 1192 flow. Second operand 15 states and 321 transitions. [2023-11-21 22:25:48,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 276 transitions, 3497 flow [2023-11-21 22:25:48,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 276 transitions, 3489 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:25:48,497 INFO L231 Difference]: Finished difference. Result has 116 places, 49 transitions, 495 flow [2023-11-21 22:25:48,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1189, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=495, PETRI_PLACES=116, PETRI_TRANSITIONS=49} [2023-11-21 22:25:48,499 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 80 predicate places. [2023-11-21 22:25:48,499 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 49 transitions, 495 flow [2023-11-21 22:25:48,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:48,500 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:48,500 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 22:25:48,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:48,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:48,704 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:48,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:48,704 INFO L85 PathProgramCache]: Analyzing trace with hash 311694810, now seen corresponding path program 2 times [2023-11-21 22:25:48,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:48,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096557504] [2023-11-21 22:25:48,705 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 22:25:48,705 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:48,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:48,706 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:48,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2023-11-21 22:25:48,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-21 22:25:48,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:48,801 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:48,803 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:48,937 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 22:25:48,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:48,938 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:48,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096557504] [2023-11-21 22:25:48,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096557504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:48,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:48,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:48,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436035171] [2023-11-21 22:25:48,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:48,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:48,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:48,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:48,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:48,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:48,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 49 transitions, 495 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:48,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:48,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:48,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:49,410 INFO L124 PetriNetUnfolderBase]: 630/1220 cut-off events. [2023-11-21 22:25:49,411 INFO L125 PetriNetUnfolderBase]: For 20337/20341 co-relation queries the response was YES. [2023-11-21 22:25:49,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7605 conditions, 1220 events. 630/1220 cut-off events. For 20337/20341 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 6688 event pairs, 139 based on Foata normal form. 58/1277 useless extension candidates. Maximal degree in co-relation 7563. Up to 606 conditions per place. [2023-11-21 22:25:49,424 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 61 selfloop transitions, 15 changer transitions 29/111 dead transitions. [2023-11-21 22:25:49,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 111 transitions, 1462 flow [2023-11-21 22:25:49,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:49,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 205 transitions. [2023-11-21 22:25:49,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857142857142857 [2023-11-21 22:25:49,426 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 205 transitions. [2023-11-21 22:25:49,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 205 transitions. [2023-11-21 22:25:49,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:49,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 205 transitions. [2023-11-21 22:25:49,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 20.5) internal successors, (205), 10 states have internal predecessors, (205), 0 states have call successors, (0), 0 states 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 22:25:49,429 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:49,429 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:49,429 INFO L175 Difference]: Start difference. First operand has 116 places, 49 transitions, 495 flow. Second operand 10 states and 205 transitions. [2023-11-21 22:25:49,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 111 transitions, 1462 flow [2023-11-21 22:25:49,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 111 transitions, 1022 flow, removed 192 selfloop flow, removed 26 redundant places. [2023-11-21 22:25:49,460 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 415 flow [2023-11-21 22:25:49,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-11-21 22:25:49,461 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 42 predicate places. [2023-11-21 22:25:49,461 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 415 flow [2023-11-21 22:25:49,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:49,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:49,462 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 22:25:49,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:49,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:49,665 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:49,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash 481426206, now seen corresponding path program 3 times [2023-11-21 22:25:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:49,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [560443176] [2023-11-21 22:25:49,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-21 22:25:49,665 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:49,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:49,666 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:49,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2023-11-21 22:25:49,747 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-11-21 22:25:49,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:49,749 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:25:49,751 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:49,876 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 22:25:49,876 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:49,877 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:49,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [560443176] [2023-11-21 22:25:49,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [560443176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:49,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:49,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:49,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593480179] [2023-11-21 22:25:49,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:49,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:49,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:49,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:49,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:49,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:49,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 415 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:49,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:49,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:49,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:50,346 INFO L124 PetriNetUnfolderBase]: 557/1066 cut-off events. [2023-11-21 22:25:50,347 INFO L125 PetriNetUnfolderBase]: For 7803/7807 co-relation queries the response was YES. [2023-11-21 22:25:50,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5121 conditions, 1066 events. 557/1066 cut-off events. For 7803/7807 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5621 event pairs, 177 based on Foata normal form. 41/1106 useless extension candidates. Maximal degree in co-relation 5092. Up to 750 conditions per place. [2023-11-21 22:25:50,357 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 60 selfloop transitions, 9 changer transitions 27/102 dead transitions. [2023-11-21 22:25:50,357 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 102 transitions, 1037 flow [2023-11-21 22:25:50,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:50,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-21 22:25:50,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 198 transitions. [2023-11-21 22:25:50,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5657142857142857 [2023-11-21 22:25:50,360 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 198 transitions. [2023-11-21 22:25:50,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 198 transitions. [2023-11-21 22:25:50,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:50,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 198 transitions. [2023-11-21 22:25:50,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 19.8) internal successors, (198), 10 states have internal predecessors, (198), 0 states have call successors, (0), 0 states 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 22:25:50,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:50,363 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 35.0) internal successors, (385), 11 states have internal predecessors, (385), 0 states have call successors, (0), 0 states 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 22:25:50,363 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 415 flow. Second operand 10 states and 198 transitions. [2023-11-21 22:25:50,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 102 transitions, 1037 flow [2023-11-21 22:25:50,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 102 transitions, 990 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-11-21 22:25:50,385 INFO L231 Difference]: Finished difference. Result has 84 places, 54 transitions, 441 flow [2023-11-21 22:25:50,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=441, PETRI_PLACES=84, PETRI_TRANSITIONS=54} [2023-11-21 22:25:50,386 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 48 predicate places. [2023-11-21 22:25:50,386 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 54 transitions, 441 flow [2023-11-21 22:25:50,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:50,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:50,387 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 22:25:50,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2023-11-21 22:25:50,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:50,590 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:50,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:50,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1772587832, now seen corresponding path program 4 times [2023-11-21 22:25:50,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:50,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188584833] [2023-11-21 22:25:50,591 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-21 22:25:50,591 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:50,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:50,594 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:50,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2023-11-21 22:25:50,685 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-21 22:25:50,685 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 22:25:50,688 INFO L262 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-21 22:25:50,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:50,770 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 22:25:50,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 22:25:50,771 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188584833] [2023-11-21 22:25:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188584833] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:50,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:50,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:50,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441463052] [2023-11-21 22:25:50,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:50,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 22:25:50,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 22:25:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-21 22:25:50,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:50,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 54 transitions, 441 flow. Second operand has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:50,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:50,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:50,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:51,223 INFO L124 PetriNetUnfolderBase]: 607/1157 cut-off events. [2023-11-21 22:25:51,223 INFO L125 PetriNetUnfolderBase]: For 10185/10189 co-relation queries the response was YES. [2023-11-21 22:25:51,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5698 conditions, 1157 events. 607/1157 cut-off events. For 10185/10189 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6164 event pairs, 153 based on Foata normal form. 28/1184 useless extension candidates. Maximal degree in co-relation 5666. Up to 645 conditions per place. [2023-11-21 22:25:51,236 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 62 selfloop transitions, 16 changer transitions 20/104 dead transitions. [2023-11-21 22:25:51,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 104 transitions, 1089 flow [2023-11-21 22:25:51,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 22:25:51,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-21 22:25:51,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 181 transitions. [2023-11-21 22:25:51,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5746031746031746 [2023-11-21 22:25:51,242 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 181 transitions. [2023-11-21 22:25:51,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 181 transitions. [2023-11-21 22:25:51,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:51,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 181 transitions. [2023-11-21 22:25:51,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 20.11111111111111) internal successors, (181), 9 states have internal predecessors, (181), 0 states have call successors, (0), 0 states 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 22:25:51,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 22:25:51,245 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 35.0) internal successors, (350), 10 states have internal predecessors, (350), 0 states have call successors, (0), 0 states 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 22:25:51,245 INFO L175 Difference]: Start difference. First operand has 84 places, 54 transitions, 441 flow. Second operand 9 states and 181 transitions. [2023-11-21 22:25:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 104 transitions, 1089 flow [2023-11-21 22:25:51,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 104 transitions, 1019 flow, removed 28 selfloop flow, removed 7 redundant places. [2023-11-21 22:25:51,277 INFO L231 Difference]: Finished difference. Result has 86 places, 57 transitions, 506 flow [2023-11-21 22:25:51,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=395, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=506, PETRI_PLACES=86, PETRI_TRANSITIONS=57} [2023-11-21 22:25:51,278 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 50 predicate places. [2023-11-21 22:25:51,278 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 57 transitions, 506 flow [2023-11-21 22:25:51,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.714285714285714) internal successors, (103), 7 states have internal predecessors, (103), 0 states have call successors, (0), 0 states 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 22:25:51,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:51,278 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:51,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2023-11-21 22:25:51,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:51,488 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 5 more)] === [2023-11-21 22:25:51,488 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:51,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1800225553, now seen corresponding path program 1 times [2023-11-21 22:25:51,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-21 22:25:51,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988462065] [2023-11-21 22:25:51,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:51,490 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-21 22:25:51,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat [2023-11-21 22:25:51,491 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-21 22:25:51,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2023-11-21 22:25:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:51,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 22:25:51,600 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:51,690 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:51,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 22:25:51,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:51,937 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-21 22:25:51,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988462065] [2023-11-21 22:25:51,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988462065] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 22:25:51,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-21 22:25:51,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-11-21 22:25:51,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959823644] [2023-11-21 22:25:51,937 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-21 22:25:51,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:25:51,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-21 22:25:51,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:25:51,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:25:52,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 35 [2023-11-21 22:25:52,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 57 transitions, 506 flow. Second operand has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 22:25:52,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:25:52,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 35 [2023-11-21 22:25:52,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:25:53,176 INFO L124 PetriNetUnfolderBase]: 818/1520 cut-off events. [2023-11-21 22:25:53,176 INFO L125 PetriNetUnfolderBase]: For 16859/16863 co-relation queries the response was YES. [2023-11-21 22:25:53,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8029 conditions, 1520 events. 818/1520 cut-off events. For 16859/16863 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7799 event pairs, 23 based on Foata normal form. 52/1571 useless extension candidates. Maximal degree in co-relation 7996. Up to 754 conditions per place. [2023-11-21 22:25:53,192 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 84 selfloop transitions, 43 changer transitions 55/188 dead transitions. [2023-11-21 22:25:53,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 188 transitions, 2168 flow [2023-11-21 22:25:53,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-21 22:25:53,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-21 22:25:53,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 422 transitions. [2023-11-21 22:25:53,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5741496598639456 [2023-11-21 22:25:53,196 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 422 transitions. [2023-11-21 22:25:53,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 422 transitions. [2023-11-21 22:25:53,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:25:53,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 422 transitions. [2023-11-21 22:25:53,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 20.095238095238095) internal successors, (422), 21 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 22:25:53,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 35.0) internal successors, (770), 22 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 22:25:53,202 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 35.0) internal successors, (770), 22 states have internal predecessors, (770), 0 states have call successors, (0), 0 states 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 22:25:53,203 INFO L175 Difference]: Start difference. First operand has 86 places, 57 transitions, 506 flow. Second operand 21 states and 422 transitions. [2023-11-21 22:25:53,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 188 transitions, 2168 flow [2023-11-21 22:25:53,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 188 transitions, 2075 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-11-21 22:25:53,246 INFO L231 Difference]: Finished difference. Result has 107 places, 73 transitions, 943 flow [2023-11-21 22:25:53,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=443, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=943, PETRI_PLACES=107, PETRI_TRANSITIONS=73} [2023-11-21 22:25:53,247 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 71 predicate places. [2023-11-21 22:25:53,247 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 73 transitions, 943 flow [2023-11-21 22:25:53,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.076923076923077) internal successors, (196), 13 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 22:25:53,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:25:53,248 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:53,251 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a2da6109-4b31-49b6-a2e3-5fcfa5d047df/bin/uautomizer-verify-bycVGegfSx/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0