./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:30:22,728 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:30:22,838 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:30:22,849 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:30:22,852 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:30:22,880 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:30:22,881 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:30:22,881 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:30:22,881 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:30:22,881 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:30:22,882 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:30:22,882 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:30:22,882 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:30:22,882 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:30:22,883 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:30:22,883 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:30:22,883 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:30:22,883 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:30:22,885 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:30:22,886 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:30:22,887 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:30:22,887 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:30:22,887 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:30:22,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:30:22,888 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:30:22,888 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:30:22,888 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:30:22,888 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:30:22,888 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:30:22,889 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:30:22,889 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:30:22,890 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:30:22,890 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:30:22,890 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:30:22,890 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:30:22,890 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB 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 ! call(reach_error())) ) 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 -> 9ef62c47abda8be3b48c3c090b2cfd60af093668e4aab452f52a0b386786ccc6 [2024-11-27 23:30:23,285 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:30:23,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:30:23,304 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:30:23,305 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:30:23,306 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:30:23,309 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2024-11-27 23:30:26,565 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0e40247/ee9d2dffeae84ea4a9caee1ccbd210b2/FLAG06567b7de [2024-11-27 23:30:27,609 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:30:27,610 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c [2024-11-27 23:30:27,681 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0e40247/ee9d2dffeae84ea4a9caee1ccbd210b2/FLAG06567b7de [2024-11-27 23:30:27,704 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/data/ce0e40247/ee9d2dffeae84ea4a9caee1ccbd210b2 [2024-11-27 23:30:27,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:30:27,710 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:30:27,713 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:30:27,714 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:30:27,720 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:30:27,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:30:27" (1/1) ... [2024-11-27 23:30:27,725 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a9aac8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:27, skipping insertion in model container [2024-11-27 23:30:27,726 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:30:27" (1/1) ... [2024-11-27 23:30:27,973 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:30:30,130 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2024-11-27 23:30:30,186 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2024-11-27 23:30:30,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:30:30,565 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:30:31,831 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[378560,378573] [2024-11-27 23:30:31,844 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/sv-benchmarks/c/combinations/Problem05_label42+token_ring.03.cil-1.c[383339,383352] [2024-11-27 23:30:31,868 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:30:31,944 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:30:31,945 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31 WrapperNode [2024-11-27 23:30:31,945 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:30:31,947 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:30:31,948 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:30:31,948 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:30:31,962 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:32,118 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:32,887 INFO L138 Inliner]: procedures = 50, calls = 51, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 12692 [2024-11-27 23:30:32,888 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:30:32,889 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:30:32,889 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:30:32,889 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:30:32,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:32,901 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:32,968 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,108 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 23:30:33,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,108 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,337 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,526 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,599 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:30:33,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:30:33,601 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:30:33,601 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:30:33,602 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (1/1) ... [2024-11-27 23:30:33,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:30:33,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:30:33,647 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:30:33,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:30:33,692 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-11-27 23:30:33,692 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-11-27 23:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-27 23:30:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-27 23:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-11-27 23:30:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-11-27 23:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-11-27 23:30:33,693 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-11-27 23:30:33,693 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-11-27 23:30:33,694 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-11-27 23:30:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-11-27 23:30:33,694 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-11-27 23:30:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-11-27 23:30:33,694 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-11-27 23:30:33,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:30:33,695 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:30:33,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:30:33,844 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:30:33,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:30:46,902 INFO L? ?]: Removed 1705 outVars from TransFormulas that were not future-live. [2024-11-27 23:30:46,903 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:30:47,001 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:30:47,005 INFO L312 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-27 23:30:47,005 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:47 BoogieIcfgContainer [2024-11-27 23:30:47,005 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:30:47,009 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:30:47,010 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:30:47,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:30:47,016 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:30:27" (1/3) ... [2024-11-27 23:30:47,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd944e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:30:47, skipping insertion in model container [2024-11-27 23:30:47,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:30:31" (2/3) ... [2024-11-27 23:30:47,020 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52cd944e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:30:47, skipping insertion in model container [2024-11-27 23:30:47,020 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:30:47" (3/3) ... [2024-11-27 23:30:47,021 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.03.cil-1.c [2024-11-27 23:30:47,042 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:30:47,046 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem05_label42+token_ring.03.cil-1.c that has 8 procedures, 2346 locations, 1 initial locations, 7 loop locations, and 2 error locations. [2024-11-27 23:30:47,210 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:30:47,226 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@13b94bf0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:30:47,227 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 23:30:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-27 23:30:47,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:47,253 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:47,254 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:47,254 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:47,260 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:47,261 INFO L85 PathProgramCache]: Analyzing trace with hash 270754396, now seen corresponding path program 1 times [2024-11-27 23:30:47,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:47,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852333608] [2024-11-27 23:30:47,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:47,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:47,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:47,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:47,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852333608] [2024-11-27 23:30:47,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852333608] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:47,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:47,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:30:47,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056637998] [2024-11-27 23:30:47,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:47,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:30:47,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:47,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:30:47,964 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:30:47,976 INFO L87 Difference]: Start difference. First operand has 2346 states, 2318 states have (on average 1.8559102674719585) internal successors, (4302), 2322 states have internal predecessors, (4302), 19 states have call successors, (19), 7 states have call predecessors, (19), 7 states have return successors, (19), 18 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:48,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:48,814 INFO L93 Difference]: Finished difference Result 4841 states and 8925 transitions. [2024-11-27 23:30:48,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:30:48,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:48,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:48,847 INFO L225 Difference]: With dead ends: 4841 [2024-11-27 23:30:48,848 INFO L226 Difference]: Without dead ends: 2436 [2024-11-27 23:30:48,858 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:48,862 INFO L435 NwaCegarLoop]: 4211 mSDtfsCounter, 4423 mSDsluCounter, 8508 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 12719 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:48,866 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4434 Valid, 12719 Invalid, 310 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [42 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:30:48,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2436 states. [2024-11-27 23:30:49,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2436 to 2423. [2024-11-27 23:30:49,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2377 states have (on average 1.831299957930164) internal successors, (4353), 2381 states have internal predecessors, (4353), 31 states have call successors, (31), 13 states have call predecessors, (31), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2024-11-27 23:30:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 4414 transitions. [2024-11-27 23:30:49,176 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 4414 transitions. Word has length 78 [2024-11-27 23:30:49,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:49,178 INFO L471 AbstractCegarLoop]: Abstraction has 2423 states and 4414 transitions. [2024-11-27 23:30:49,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:49,179 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 4414 transitions. [2024-11-27 23:30:49,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:49,185 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:49,185 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:49,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:30:49,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:49,187 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:49,187 INFO L85 PathProgramCache]: Analyzing trace with hash 278401112, now seen corresponding path program 1 times [2024-11-27 23:30:49,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:49,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088849519] [2024-11-27 23:30:49,188 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:49,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:49,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:49,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088849519] [2024-11-27 23:30:49,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088849519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:49,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:49,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:49,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636206919] [2024-11-27 23:30:49,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:49,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:49,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:49,722 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:49,722 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:49,723 INFO L87 Difference]: Start difference. First operand 2423 states and 4414 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:50,710 INFO L93 Difference]: Finished difference Result 2895 states and 5135 transitions. [2024-11-27 23:30:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:50,727 INFO L225 Difference]: With dead ends: 2895 [2024-11-27 23:30:50,727 INFO L226 Difference]: Without dead ends: 2604 [2024-11-27 23:30:50,730 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:50,731 INFO L435 NwaCegarLoop]: 4260 mSDtfsCounter, 4347 mSDsluCounter, 12752 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4358 SdHoareTripleChecker+Valid, 17012 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:50,731 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4358 Valid, 17012 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:30:50,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2024-11-27 23:30:50,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2559. [2024-11-27 23:30:50,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2559 states, 2494 states have (on average 1.8163592622293505) internal successors, (4530), 2499 states have internal predecessors, (4530), 43 states have call successors, (43), 19 states have call predecessors, (43), 20 states have return successors, (45), 42 states have call predecessors, (45), 41 states have call successors, (45) [2024-11-27 23:30:50,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 4618 transitions. [2024-11-27 23:30:50,844 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 4618 transitions. Word has length 78 [2024-11-27 23:30:50,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:50,845 INFO L471 AbstractCegarLoop]: Abstraction has 2559 states and 4618 transitions. [2024-11-27 23:30:50,845 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:50,845 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 4618 transitions. [2024-11-27 23:30:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:50,848 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:50,848 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:50,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:30:50,849 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:50,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:50,849 INFO L85 PathProgramCache]: Analyzing trace with hash -138995494, now seen corresponding path program 1 times [2024-11-27 23:30:50,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:50,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902374199] [2024-11-27 23:30:50,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:50,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:50,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:51,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:51,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902374199] [2024-11-27 23:30:51,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902374199] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:51,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:51,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:51,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737202440] [2024-11-27 23:30:51,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:51,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:51,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:51,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:51,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:51,149 INFO L87 Difference]: Start difference. First operand 2559 states and 4618 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:51,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:51,935 INFO L93 Difference]: Finished difference Result 3319 states and 5778 transitions. [2024-11-27 23:30:51,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:51,936 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:51,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:51,954 INFO L225 Difference]: With dead ends: 3319 [2024-11-27 23:30:51,954 INFO L226 Difference]: Without dead ends: 2892 [2024-11-27 23:30:51,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:51,959 INFO L435 NwaCegarLoop]: 4256 mSDtfsCounter, 4342 mSDsluCounter, 12740 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4353 SdHoareTripleChecker+Valid, 16996 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:51,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4353 Valid, 16996 Invalid, 528 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:30:51,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2892 states. [2024-11-27 23:30:52,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2892 to 2844. [2024-11-27 23:30:52,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2844 states, 2739 states have (on average 1.7900693683826214) internal successors, (4903), 2748 states have internal predecessors, (4903), 67 states have call successors, (67), 31 states have call predecessors, (67), 36 states have return successors, (81), 68 states have call predecessors, (81), 65 states have call successors, (81) [2024-11-27 23:30:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2844 states to 2844 states and 5051 transitions. [2024-11-27 23:30:52,108 INFO L78 Accepts]: Start accepts. Automaton has 2844 states and 5051 transitions. Word has length 78 [2024-11-27 23:30:52,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:52,110 INFO L471 AbstractCegarLoop]: Abstraction has 2844 states and 5051 transitions. [2024-11-27 23:30:52,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:52,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2844 states and 5051 transitions. [2024-11-27 23:30:52,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:52,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:52,117 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:52,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:30:52,118 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:52,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:52,118 INFO L85 PathProgramCache]: Analyzing trace with hash 540276760, now seen corresponding path program 1 times [2024-11-27 23:30:52,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:52,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434397842] [2024-11-27 23:30:52,119 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:52,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:52,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:52,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:52,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434397842] [2024-11-27 23:30:52,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434397842] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:52,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:52,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:52,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044946152] [2024-11-27 23:30:52,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:52,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:52,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:52,366 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:52,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:52,367 INFO L87 Difference]: Start difference. First operand 2844 states and 5051 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:53,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:53,138 INFO L93 Difference]: Finished difference Result 4214 states and 7161 transitions. [2024-11-27 23:30:53,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:53,139 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:53,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:53,165 INFO L225 Difference]: With dead ends: 4214 [2024-11-27 23:30:53,166 INFO L226 Difference]: Without dead ends: 3502 [2024-11-27 23:30:53,169 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:53,172 INFO L435 NwaCegarLoop]: 4253 mSDtfsCounter, 4337 mSDsluCounter, 12731 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16984 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:53,173 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16984 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:30:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2024-11-27 23:30:53,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3447. [2024-11-27 23:30:53,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 3256 states have (on average 1.749078624078624) internal successors, (5695), 3279 states have internal predecessors, (5695), 115 states have call successors, (115), 55 states have call predecessors, (115), 74 states have return successors, (177), 120 states have call predecessors, (177), 113 states have call successors, (177) [2024-11-27 23:30:53,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 5987 transitions. [2024-11-27 23:30:53,339 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 5987 transitions. Word has length 78 [2024-11-27 23:30:53,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:53,340 INFO L471 AbstractCegarLoop]: Abstraction has 3447 states and 5987 transitions. [2024-11-27 23:30:53,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:53,340 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 5987 transitions. [2024-11-27 23:30:53,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:53,342 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:53,343 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:53,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:30:53,343 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:53,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:53,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1793115878, now seen corresponding path program 1 times [2024-11-27 23:30:53,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:53,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178237073] [2024-11-27 23:30:53,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:53,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:53,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:53,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178237073] [2024-11-27 23:30:53,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178237073] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:53,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:53,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:53,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897488459] [2024-11-27 23:30:53,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:53,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:53,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:53,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:53,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:53,509 INFO L87 Difference]: Start difference. First operand 3447 states and 5987 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:54,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:54,438 INFO L93 Difference]: Finished difference Result 6325 states and 10500 transitions. [2024-11-27 23:30:54,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:54,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:54,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:54,464 INFO L225 Difference]: With dead ends: 6325 [2024-11-27 23:30:54,465 INFO L226 Difference]: Without dead ends: 5010 [2024-11-27 23:30:54,469 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:54,470 INFO L435 NwaCegarLoop]: 4248 mSDtfsCounter, 4436 mSDsluCounter, 12711 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4451 SdHoareTripleChecker+Valid, 16959 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:54,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4451 Valid, 16959 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-27 23:30:54,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5010 states. [2024-11-27 23:30:54,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5010 to 4710. [2024-11-27 23:30:54,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4710 states, 4337 states have (on average 1.6986396126354624) internal successors, (7367), 4406 states have internal predecessors, (7367), 203 states have call successors, (203), 103 states have call predecessors, (203), 168 states have return successors, (457), 216 states have call predecessors, (457), 201 states have call successors, (457) [2024-11-27 23:30:54,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4710 states to 4710 states and 8027 transitions. [2024-11-27 23:30:54,735 INFO L78 Accepts]: Start accepts. Automaton has 4710 states and 8027 transitions. Word has length 78 [2024-11-27 23:30:54,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:54,735 INFO L471 AbstractCegarLoop]: Abstraction has 4710 states and 8027 transitions. [2024-11-27 23:30:54,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:54,736 INFO L276 IsEmpty]: Start isEmpty. Operand 4710 states and 8027 transitions. [2024-11-27 23:30:54,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:54,740 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:54,740 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:54,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:30:54,740 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:54,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:54,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1591291944, now seen corresponding path program 1 times [2024-11-27 23:30:54,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:54,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766220272] [2024-11-27 23:30:54,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:54,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:54,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766220272] [2024-11-27 23:30:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766220272] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:54,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:54,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:54,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730503646] [2024-11-27 23:30:54,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:54,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:54,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:54,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:54,949 INFO L87 Difference]: Start difference. First operand 4710 states and 8027 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:56,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:56,360 INFO L93 Difference]: Finished difference Result 10404 states and 17374 transitions. [2024-11-27 23:30:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:56,495 INFO L225 Difference]: With dead ends: 10404 [2024-11-27 23:30:56,495 INFO L226 Difference]: Without dead ends: 7826 [2024-11-27 23:30:56,519 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:56,520 INFO L435 NwaCegarLoop]: 4244 mSDtfsCounter, 4349 mSDsluCounter, 12699 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4359 SdHoareTripleChecker+Valid, 16943 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:56,520 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4359 Valid, 16943 Invalid, 607 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [27 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 23:30:56,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7826 states. [2024-11-27 23:30:57,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7826 to 7257. [2024-11-27 23:30:57,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7257 states, 6474 states have (on average 1.642106889094841) internal successors, (10631), 6689 states have internal predecessors, (10631), 371 states have call successors, (371), 199 states have call predecessors, (371), 410 states have return successors, (1393), 400 states have call predecessors, (1393), 369 states have call successors, (1393) [2024-11-27 23:30:57,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7257 states to 7257 states and 12395 transitions. [2024-11-27 23:30:57,179 INFO L78 Accepts]: Start accepts. Automaton has 7257 states and 12395 transitions. Word has length 78 [2024-11-27 23:30:57,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:30:57,180 INFO L471 AbstractCegarLoop]: Abstraction has 7257 states and 12395 transitions. [2024-11-27 23:30:57,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:57,184 INFO L276 IsEmpty]: Start isEmpty. Operand 7257 states and 12395 transitions. [2024-11-27 23:30:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:30:57,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:30:57,196 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:30:57,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:30:57,196 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:30:57,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:30:57,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1030592166, now seen corresponding path program 1 times [2024-11-27 23:30:57,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:30:57,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230583253] [2024-11-27 23:30:57,197 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:30:57,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:30:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:30:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:30:57,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:30:57,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230583253] [2024-11-27 23:30:57,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230583253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:30:57,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:30:57,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:30:57,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887329882] [2024-11-27 23:30:57,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:30:57,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:30:57,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:30:57,371 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:30:57,371 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:30:57,371 INFO L87 Difference]: Start difference. First operand 7257 states and 12395 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:30:58,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:30:58,712 INFO L93 Difference]: Finished difference Result 18073 states and 31624 transitions. [2024-11-27 23:30:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:30:58,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:30:58,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:30:58,785 INFO L225 Difference]: With dead ends: 18073 [2024-11-27 23:30:58,785 INFO L226 Difference]: Without dead ends: 12948 [2024-11-27 23:30:58,805 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-27 23:30:58,806 INFO L435 NwaCegarLoop]: 4238 mSDtfsCounter, 4333 mSDsluCounter, 12683 mSDsCounter, 0 mSdLazyCounter, 506 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4348 SdHoareTripleChecker+Valid, 16921 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 23:30:58,806 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4348 Valid, 16921 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 506 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 23:30:58,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12948 states. [2024-11-27 23:30:59,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12948 to 12609. [2024-11-27 23:30:59,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12609 states, 10860 states have (on average 1.5857274401473296) internal successors, (17221), 11529 states have internal predecessors, (17221), 691 states have call successors, (691), 391 states have call predecessors, (691), 1056 states have return successors, (4785), 752 states have call predecessors, (4785), 689 states have call successors, (4785) [2024-11-27 23:31:00,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12609 states to 12609 states and 22697 transitions. [2024-11-27 23:31:00,075 INFO L78 Accepts]: Start accepts. Automaton has 12609 states and 22697 transitions. Word has length 78 [2024-11-27 23:31:00,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:00,076 INFO L471 AbstractCegarLoop]: Abstraction has 12609 states and 22697 transitions. [2024-11-27 23:31:00,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:31:00,078 INFO L276 IsEmpty]: Start isEmpty. Operand 12609 states and 22697 transitions. [2024-11-27 23:31:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-27 23:31:00,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:00,092 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:00,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:31:00,093 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:00,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:00,093 INFO L85 PathProgramCache]: Analyzing trace with hash 230325084, now seen corresponding path program 1 times [2024-11-27 23:31:00,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:00,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558752819] [2024-11-27 23:31:00,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:00,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:00,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:31:00,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:00,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558752819] [2024-11-27 23:31:00,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558752819] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:00,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:31:00,244 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:31:00,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179729611] [2024-11-27 23:31:00,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:00,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:31:00,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:00,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:31:00,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:00,245 INFO L87 Difference]: Start difference. First operand 12609 states and 22697 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:31:01,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:01,832 INFO L93 Difference]: Finished difference Result 28667 states and 51500 transitions. [2024-11-27 23:31:01,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:31:01,833 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2024-11-27 23:31:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:01,932 INFO L225 Difference]: With dead ends: 28667 [2024-11-27 23:31:01,932 INFO L226 Difference]: Without dead ends: 18191 [2024-11-27 23:31:01,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:31:01,980 INFO L435 NwaCegarLoop]: 4379 mSDtfsCounter, 4346 mSDsluCounter, 4314 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4346 SdHoareTripleChecker+Valid, 8693 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:01,981 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4346 Valid, 8693 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:31:02,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18191 states. [2024-11-27 23:31:04,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18191 to 17348. [2024-11-27 23:31:04,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17348 states, 14824 states have (on average 1.54971667566109) internal successors, (22973), 15738 states have internal predecessors, (22973), 1056 states have call successors, (1056), 589 states have call predecessors, (1056), 1466 states have return successors, (6143), 1084 states have call predecessors, (6143), 1054 states have call successors, (6143) [2024-11-27 23:31:04,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17348 states to 17348 states and 30172 transitions. [2024-11-27 23:31:04,221 INFO L78 Accepts]: Start accepts. Automaton has 17348 states and 30172 transitions. Word has length 78 [2024-11-27 23:31:04,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:04,223 INFO L471 AbstractCegarLoop]: Abstraction has 17348 states and 30172 transitions. [2024-11-27 23:31:04,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 23:31:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 17348 states and 30172 transitions. [2024-11-27 23:31:04,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:31:04,307 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:04,308 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:04,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:31:04,311 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:04,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash 680632475, now seen corresponding path program 1 times [2024-11-27 23:31:04,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:04,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115129028] [2024-11-27 23:31:04,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:04,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:04,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:04,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115129028] [2024-11-27 23:31:04,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115129028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:04,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [216518689] [2024-11-27 23:31:04,476 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:04,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:04,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:04,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:04,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:31:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:04,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:04,669 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-27 23:31:04,772 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [216518689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-27 23:31:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453166836] [2024-11-27 23:31:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:04,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:04,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:04,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:04,774 INFO L87 Difference]: Start difference. First operand 17348 states and 30172 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:31:06,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:06,323 INFO L93 Difference]: Finished difference Result 47431 states and 82416 transitions. [2024-11-27 23:31:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:06,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-27 23:31:06,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:06,510 INFO L225 Difference]: With dead ends: 47431 [2024-11-27 23:31:06,511 INFO L226 Difference]: Without dead ends: 32216 [2024-11-27 23:31:06,562 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:06,564 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4145 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4145 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:06,565 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4145 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:06,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32216 states. [2024-11-27 23:31:09,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32216 to 32114. [2024-11-27 23:31:09,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32114 states, 27124 states have (on average 1.5221206311753428) internal successors, (41286), 28949 states have internal predecessors, (41286), 2056 states have call successors, (2056), 1177 states have call predecessors, (2056), 2932 states have return successors, (12169), 2051 states have call predecessors, (12169), 2054 states have call successors, (12169) [2024-11-27 23:31:09,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32114 states to 32114 states and 55511 transitions. [2024-11-27 23:31:09,423 INFO L78 Accepts]: Start accepts. Automaton has 32114 states and 55511 transitions. Word has length 126 [2024-11-27 23:31:09,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:09,424 INFO L471 AbstractCegarLoop]: Abstraction has 32114 states and 55511 transitions. [2024-11-27 23:31:09,424 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 2 states have internal predecessors, (90), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:31:09,425 INFO L276 IsEmpty]: Start isEmpty. Operand 32114 states and 55511 transitions. [2024-11-27 23:31:09,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:31:09,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:09,519 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:09,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:31:09,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:09,725 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:09,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:09,726 INFO L85 PathProgramCache]: Analyzing trace with hash 118010201, now seen corresponding path program 1 times [2024-11-27 23:31:09,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:09,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878466610] [2024-11-27 23:31:09,726 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:09,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:09,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:09,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878466610] [2024-11-27 23:31:09,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878466610] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:09,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238904509] [2024-11-27 23:31:09,879 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:09,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:09,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:09,881 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:09,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:31:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:10,061 INFO L256 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:10,069 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:10,190 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-27 23:31:10,196 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:10,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238904509] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:10,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:10,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2024-11-27 23:31:10,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034028951] [2024-11-27 23:31:10,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:10,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:10,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:10,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:10,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:10,198 INFO L87 Difference]: Start difference. First operand 32114 states and 55511 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:31:13,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:13,180 INFO L93 Difference]: Finished difference Result 91383 states and 158301 transitions. [2024-11-27 23:31:13,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:13,181 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 126 [2024-11-27 23:31:13,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:13,531 INFO L225 Difference]: With dead ends: 91383 [2024-11-27 23:31:13,532 INFO L226 Difference]: Without dead ends: 61402 [2024-11-27 23:31:13,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:13,862 INFO L435 NwaCegarLoop]: 4189 mSDtfsCounter, 4139 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4139 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:13,863 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4139 Valid, 4396 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61402 states. [2024-11-27 23:31:18,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61402 to 61202. [2024-11-27 23:31:18,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61202 states, 51330 states have (on average 1.504461328657705) internal successors, (77224), 54977 states have internal predecessors, (77224), 4006 states have call successors, (4006), 2353 states have call predecessors, (4006), 5864 states have return successors, (24171), 3935 states have call predecessors, (24171), 4004 states have call successors, (24171) [2024-11-27 23:31:18,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61202 states to 61202 states and 105401 transitions. [2024-11-27 23:31:18,828 INFO L78 Accepts]: Start accepts. Automaton has 61202 states and 105401 transitions. Word has length 126 [2024-11-27 23:31:18,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:31:18,828 INFO L471 AbstractCegarLoop]: Abstraction has 61202 states and 105401 transitions. [2024-11-27 23:31:18,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:31:18,829 INFO L276 IsEmpty]: Start isEmpty. Operand 61202 states and 105401 transitions. [2024-11-27 23:31:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2024-11-27 23:31:18,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:31:18,914 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:31:18,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:31:19,114 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-27 23:31:19,115 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:31:19,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:31:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1923962729, now seen corresponding path program 1 times [2024-11-27 23:31:19,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:31:19,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136454468] [2024-11-27 23:31:19,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:31:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:19,234 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-27 23:31:19,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:31:19,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136454468] [2024-11-27 23:31:19,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136454468] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:31:19,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655678301] [2024-11-27 23:31:19,236 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:31:19,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:31:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:31:19,242 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:31:19,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_81243143-94bb-4ca6-8b6e-5d402691a409/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:31:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:31:19,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-27 23:31:19,405 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:31:19,449 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-27 23:31:19,450 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 23:31:19,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655678301] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:31:19,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 23:31:19,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-27 23:31:19,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873710952] [2024-11-27 23:31:19,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:31:19,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:31:19,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:31:19,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:31:19,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:19,452 INFO L87 Difference]: Start difference. First operand 61202 states and 105401 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:31:25,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:31:25,390 INFO L93 Difference]: Finished difference Result 176709 states and 306673 transitions. [2024-11-27 23:31:25,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:31:25,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 126 [2024-11-27 23:31:25,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:31:26,431 INFO L225 Difference]: With dead ends: 176709 [2024-11-27 23:31:26,431 INFO L226 Difference]: Without dead ends: 117641 [2024-11-27 23:31:26,629 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:31:26,629 INFO L435 NwaCegarLoop]: 4388 mSDtfsCounter, 193 mSDsluCounter, 4187 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 8575 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:31:26,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 8575 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:31:26,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117641 states.