./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC --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 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:27:50,555 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:27:50,646 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:27:50,652 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:27:50,652 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:27:50,696 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:27:50,698 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:27:50,698 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:27:50,699 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:27:50,699 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:27:50,700 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:27:50,700 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:27:50,701 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:27:50,701 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:27:50,702 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:27:50,702 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:27:50,702 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:27:50,702 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:27:50,702 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:27:50,703 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:27:50,704 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:27:50,704 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:27:50,704 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:27:50,705 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:27:50,705 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:27:50,706 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:27:50,706 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:27:50,707 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:27:50,707 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_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC 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 -> 5d72e5e7abaa750c1c0009f2e3addca35915e1b949637f5a49ed633aadc3fe53 [2024-11-24 00:27:51,062 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:27:51,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:27:51,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:27:51,079 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:27:51,080 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:27:51,081 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-24 00:27:53,974 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/data/9f320017a/9ab8b471eb2344849ae4fa5d2cafb4f6/FLAGb8c194e2a [2024-11-24 00:27:54,323 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:27:54,324 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-24 00:27:54,337 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/data/9f320017a/9ab8b471eb2344849ae4fa5d2cafb4f6/FLAGb8c194e2a [2024-11-24 00:27:54,351 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/data/9f320017a/9ab8b471eb2344849ae4fa5d2cafb4f6 [2024-11-24 00:27:54,353 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:27:54,355 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:27:54,356 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:27:54,357 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:27:54,362 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:27:54,362 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,363 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dd52091 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54, skipping insertion in model container [2024-11-24 00:27:54,364 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,391 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:27:54,689 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_52e9c028-d74a-4a22-bb08-15207352467e/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2024-11-24 00:27:54,692 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:27:54,703 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:27:54,767 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_52e9c028-d74a-4a22-bb08-15207352467e/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c[14680,14693] [2024-11-24 00:27:54,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:27:54,787 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:27:54,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54 WrapperNode [2024-11-24 00:27:54,788 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:27:54,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:27:54,789 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:27:54,789 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:27:54,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,815 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,855 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 506 [2024-11-24 00:27:54,856 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:27:54,856 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:27:54,856 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:27:54,856 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:27:54,866 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,870 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,887 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]. [2024-11-24 00:27:54,887 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,887 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,903 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,916 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,926 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,928 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:27:54,938 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:27:54,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:27:54,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:27:54,942 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (1/1) ... [2024-11-24 00:27:54,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:27:54,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:27:54,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:27:54,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:27:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-24 00:27:55,015 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-24 00:27:55,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:27:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-24 00:27:55,016 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-24 00:27:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-24 00:27:55,016 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-24 00:27:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-24 00:27:55,016 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-24 00:27:55,016 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:27:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:27:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:27:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-24 00:27:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-24 00:27:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:27:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:27:55,017 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-24 00:27:55,017 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-24 00:27:55,173 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:27:55,177 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:27:55,982 INFO L? ?]: Removed 114 outVars from TransFormulas that were not future-live. [2024-11-24 00:27:55,982 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:27:55,997 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:27:55,998 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 00:27:55,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:27:55 BoogieIcfgContainer [2024-11-24 00:27:55,998 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:27:56,001 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:27:56,001 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:27:56,007 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:27:56,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:27:54" (1/3) ... [2024-11-24 00:27:56,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337441ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:27:56, skipping insertion in model container [2024-11-24 00:27:56,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:27:54" (2/3) ... [2024-11-24 00:27:56,008 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@337441ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:27:56, skipping insertion in model container [2024-11-24 00:27:56,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:27:55" (3/3) ... [2024-11-24 00:27:56,010 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c [2024-11-24 00:27:56,027 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:27:56,028 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.ufo.UNBOUNDED.pals.c that has 8 procedures, 180 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:27:56,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:27:56,111 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;@77e01d07, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:27:56,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:27:56,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:27:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 00:27:56,124 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:56,125 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] [2024-11-24 00:27:56,126 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:56,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2024-11-24 00:27:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639303852] [2024-11-24 00:27:56,141 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:56,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:56,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:56,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639303852] [2024-11-24 00:27:56,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639303852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:56,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:56,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:27:56,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068253301] [2024-11-24 00:27:56,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:56,517 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:27:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:56,540 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:27:56,541 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:27:56,545 INFO L87 Difference]: Start difference. First operand has 180 states, 140 states have (on average 1.5571428571428572) internal successors, (218), 142 states have internal predecessors, (218), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:56,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:56,613 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2024-11-24 00:27:56,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:27:56,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-24 00:27:56,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:56,628 INFO L225 Difference]: With dead ends: 340 [2024-11-24 00:27:56,629 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 00:27:56,637 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:27:56,640 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:56,643 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:27:56,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 00:27:56,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 00:27:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.5401459854014599) internal successors, (211), 138 states have internal predecessors, (211), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:27:56,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2024-11-24 00:27:56,724 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2024-11-24 00:27:56,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:56,725 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2024-11-24 00:27:56,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:56,727 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2024-11-24 00:27:56,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 00:27:56,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:56,728 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] [2024-11-24 00:27:56,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:27:56,729 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:56,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:56,730 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2024-11-24 00:27:56,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:56,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728710613] [2024-11-24 00:27:56,733 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:56,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:57,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:57,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:57,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728710613] [2024-11-24 00:27:57,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728710613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:57,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:57,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:27:57,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842427846] [2024-11-24 00:27:57,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:57,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:27:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:57,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:27:57,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:27:57,162 INFO L87 Difference]: Start difference. First operand 176 states and 273 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:57,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:57,320 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2024-11-24 00:27:57,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:27:57,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-24 00:27:57,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:57,323 INFO L225 Difference]: With dead ends: 338 [2024-11-24 00:27:57,324 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 00:27:57,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:27:57,330 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 0 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:57,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1323 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:27:57,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 00:27:57,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 00:27:57,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 137 states have (on average 1.4525547445255473) internal successors, (199), 138 states have internal predecessors, (199), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:27:57,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2024-11-24 00:27:57,360 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2024-11-24 00:27:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:57,361 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2024-11-24 00:27:57,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:57,361 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2024-11-24 00:27:57,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 00:27:57,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:57,366 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] [2024-11-24 00:27:57,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:27:57,366 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:57,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2024-11-24 00:27:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:57,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001139453] [2024-11-24 00:27:57,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:57,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:57,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:27:57,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:57,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001139453] [2024-11-24 00:27:57,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001139453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:57,823 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:57,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:27:57,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967441009] [2024-11-24 00:27:57,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:57,824 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:27:57,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:57,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:27:57,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:27:57,827 INFO L87 Difference]: Start difference. First operand 176 states and 261 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:57,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:57,916 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2024-11-24 00:27:57,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:27:57,916 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-24 00:27:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:57,919 INFO L225 Difference]: With dead ends: 339 [2024-11-24 00:27:57,919 INFO L226 Difference]: Without dead ends: 180 [2024-11-24 00:27:57,921 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:27:57,924 INFO L435 NwaCegarLoop]: 255 mSDtfsCounter, 3 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 755 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:57,925 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:27:57,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-24 00:27:57,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-24 00:27:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 140 states have (on average 1.4428571428571428) internal successors, (202), 141 states have internal predecessors, (202), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:27:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-24 00:27:57,964 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2024-11-24 00:27:57,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:57,965 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-24 00:27:57,965 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:27:57,965 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-24 00:27:57,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 00:27:57,966 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:57,966 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:27:57,967 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:27:57,967 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:57,968 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:57,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2024-11-24 00:27:57,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:57,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179645846] [2024-11-24 00:27:57,971 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:57,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:58,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:27:58,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:58,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179645846] [2024-11-24 00:27:58,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179645846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:58,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:58,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:27:58,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068451017] [2024-11-24 00:27:58,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:58,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:27:58,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:58,153 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:27:58,153 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:27:58,153 INFO L87 Difference]: Start difference. First operand 180 states and 264 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:58,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:58,230 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2024-11-24 00:27:58,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:27:58,231 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-24 00:27:58,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:58,235 INFO L225 Difference]: With dead ends: 494 [2024-11-24 00:27:58,237 INFO L226 Difference]: Without dead ends: 331 [2024-11-24 00:27:58,238 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:27:58,239 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 212 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:58,240 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 523 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:27:58,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-24 00:27:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2024-11-24 00:27:58,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 249 states have (on average 1.461847389558233) internal successors, (364), 251 states have internal predecessors, (364), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-24 00:27:58,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2024-11-24 00:27:58,296 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2024-11-24 00:27:58,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:58,298 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2024-11-24 00:27:58,298 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:58,298 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2024-11-24 00:27:58,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:27:58,302 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:58,302 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:27:58,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:27:58,303 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:58,303 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:58,303 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2024-11-24 00:27:58,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:58,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341181340] [2024-11-24 00:27:58,304 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:58,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:58,490 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:27:58,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:58,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341181340] [2024-11-24 00:27:58,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1341181340] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:58,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:58,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:27:58,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237452528] [2024-11-24 00:27:58,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:58,491 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:27:58,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:58,492 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:27:58,492 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:27:58,494 INFO L87 Difference]: Start difference. First operand 326 states and 484 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:58,634 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2024-11-24 00:27:58,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:27:58,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-24 00:27:58,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:58,643 INFO L225 Difference]: With dead ends: 917 [2024-11-24 00:27:58,645 INFO L226 Difference]: Without dead ends: 608 [2024-11-24 00:27:58,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:27:58,647 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:58,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 545 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:27:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-24 00:27:58,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-24 00:27:58,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 453 states have (on average 1.4724061810154525) internal successors, (667), 457 states have internal predecessors, (667), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-24 00:27:58,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2024-11-24 00:27:58,738 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2024-11-24 00:27:58,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:58,739 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2024-11-24 00:27:58,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:58,739 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2024-11-24 00:27:58,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:27:58,742 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:58,742 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:27:58,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:27:58,743 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:58,743 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:58,744 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2024-11-24 00:27:58,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:58,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837951364] [2024-11-24 00:27:58,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:58,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:58,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:27:58,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:58,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837951364] [2024-11-24 00:27:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837951364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:58,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:27:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475943869] [2024-11-24 00:27:58,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:58,967 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:27:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:58,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:27:58,968 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:27:58,968 INFO L87 Difference]: Start difference. First operand 602 states and 901 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:59,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:59,251 INFO L93 Difference]: Finished difference Result 1291 states and 1928 transitions. [2024-11-24 00:27:59,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:27:59,252 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-24 00:27:59,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:59,260 INFO L225 Difference]: With dead ends: 1291 [2024-11-24 00:27:59,260 INFO L226 Difference]: Without dead ends: 706 [2024-11-24 00:27:59,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:27:59,267 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:59,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:27:59,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-24 00:27:59,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2024-11-24 00:27:59,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 528 states have (on average 1.456439393939394) internal successors, (769), 531 states have internal predecessors, (769), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:27:59,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2024-11-24 00:27:59,359 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2024-11-24 00:27:59,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:59,360 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2024-11-24 00:27:59,360 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:59,360 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2024-11-24 00:27:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:27:59,361 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:59,362 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:27:59,362 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:27:59,362 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:59,363 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:59,363 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2024-11-24 00:27:59,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:59,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146172899] [2024-11-24 00:27:59,364 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:59,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:59,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:27:59,554 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:27:59,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:27:59,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146172899] [2024-11-24 00:27:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146172899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:27:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:27:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:27:59,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198063289] [2024-11-24 00:27:59,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:27:59,555 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:27:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:27:59,555 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:27:59,556 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:27:59,556 INFO L87 Difference]: Start difference. First operand 690 states and 1017 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:59,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:27:59,812 INFO L93 Difference]: Finished difference Result 1295 states and 1928 transitions. [2024-11-24 00:27:59,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:27:59,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-24 00:27:59,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:27:59,820 INFO L225 Difference]: With dead ends: 1295 [2024-11-24 00:27:59,820 INFO L226 Difference]: Without dead ends: 710 [2024-11-24 00:27:59,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:27:59,823 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:27:59,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 669 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:27:59,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-24 00:27:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2024-11-24 00:27:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4496268656716418) internal successors, (777), 539 states have internal predecessors, (777), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:27:59,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2024-11-24 00:27:59,907 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2024-11-24 00:27:59,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:27:59,907 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2024-11-24 00:27:59,908 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:27:59,908 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2024-11-24 00:27:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 00:27:59,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:27:59,910 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:27:59,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:27:59,910 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:27:59,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:27:59,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2024-11-24 00:27:59,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:27:59,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867630523] [2024-11-24 00:27:59,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:27:59,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:27:59,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:00,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:00,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867630523] [2024-11-24 00:28:00,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867630523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:00,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:00,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221172342] [2024-11-24 00:28:00,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:00,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:00,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:00,167 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:00,167 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:00,167 INFO L87 Difference]: Start difference. First operand 698 states and 1025 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:28:00,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:00,394 INFO L93 Difference]: Finished difference Result 1283 states and 1908 transitions. [2024-11-24 00:28:00,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:00,394 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-24 00:28:00,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:00,400 INFO L225 Difference]: With dead ends: 1283 [2024-11-24 00:28:00,400 INFO L226 Difference]: Without dead ends: 698 [2024-11-24 00:28:00,402 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:00,402 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 61 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:00,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 663 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-24 00:28:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-24 00:28:00,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 536 states have (on average 1.4421641791044777) internal successors, (773), 539 states have internal predecessors, (773), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:00,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2024-11-24 00:28:00,479 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2024-11-24 00:28:00,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:00,479 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2024-11-24 00:28:00,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:28:00,479 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2024-11-24 00:28:00,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 00:28:00,481 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:00,481 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-24 00:28:00,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:28:00,481 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:00,482 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:00,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2024-11-24 00:28:00,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:00,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588760240] [2024-11-24 00:28:00,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:00,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:00,738 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:00,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588760240] [2024-11-24 00:28:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588760240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:00,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314193545] [2024-11-24 00:28:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:00,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:00,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:00,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:00,740 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:00,740 INFO L87 Difference]: Start difference. First operand 698 states and 1021 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:28:00,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:00,837 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2024-11-24 00:28:00,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:00,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-24 00:28:00,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:00,844 INFO L225 Difference]: With dead ends: 1303 [2024-11-24 00:28:00,844 INFO L226 Difference]: Without dead ends: 718 [2024-11-24 00:28:00,847 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:00,847 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 4 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:00,847 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:00,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-24 00:28:00,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-11-24 00:28:00,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 552 states have (on average 1.4293478260869565) internal successors, (789), 555 states have internal predecessors, (789), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2024-11-24 00:28:00,913 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2024-11-24 00:28:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:00,914 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2024-11-24 00:28:00,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:28:00,914 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2024-11-24 00:28:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 00:28:00,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:00,916 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:00,916 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:28:00,916 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:00,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:00,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2024-11-24 00:28:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879617182] [2024-11-24 00:28:00,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:00,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:01,228 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:01,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:01,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879617182] [2024-11-24 00:28:01,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879617182] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:01,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:01,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:01,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838312692] [2024-11-24 00:28:01,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:01,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:01,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:01,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:01,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:01,231 INFO L87 Difference]: Start difference. First operand 718 states and 1037 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-24 00:28:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:01,353 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2024-11-24 00:28:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:01,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-24 00:28:01,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:01,360 INFO L225 Difference]: With dead ends: 1343 [2024-11-24 00:28:01,360 INFO L226 Difference]: Without dead ends: 738 [2024-11-24 00:28:01,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:01,364 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:01,367 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:01,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-24 00:28:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-24 00:28:01,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 738 states, 568 states have (on average 1.4172535211267605) internal successors, (805), 571 states have internal predecessors, (805), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2024-11-24 00:28:01,443 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2024-11-24 00:28:01,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:01,443 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2024-11-24 00:28:01,443 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-24 00:28:01,444 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2024-11-24 00:28:01,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 00:28:01,445 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:01,445 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:01,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:28:01,445 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:01,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:01,446 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2024-11-24 00:28:01,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:01,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014508360] [2024-11-24 00:28:01,446 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:01,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:01,679 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:01,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:01,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014508360] [2024-11-24 00:28:01,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014508360] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:01,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:01,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:01,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434759470] [2024-11-24 00:28:01,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:01,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:01,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:01,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:01,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:01,682 INFO L87 Difference]: Start difference. First operand 738 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:28:01,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:01,783 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2024-11-24 00:28:01,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:01,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-24 00:28:01,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:01,791 INFO L225 Difference]: With dead ends: 1379 [2024-11-24 00:28:01,791 INFO L226 Difference]: Without dead ends: 754 [2024-11-24 00:28:01,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:01,795 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:01,795 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:01,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-24 00:28:01,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-24 00:28:01,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 580 states have (on average 1.4086206896551725) internal successors, (817), 583 states have internal predecessors, (817), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:01,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2024-11-24 00:28:01,861 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2024-11-24 00:28:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:01,861 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2024-11-24 00:28:01,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:28:01,861 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2024-11-24 00:28:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 00:28:01,863 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:01,863 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:01,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:28:01,863 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:01,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:01,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2024-11-24 00:28:01,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:01,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693129233] [2024-11-24 00:28:01,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:01,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:01,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:02,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:02,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693129233] [2024-11-24 00:28:02,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693129233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:02,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:02,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:02,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739508691] [2024-11-24 00:28:02,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:02,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:02,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:02,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:02,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:02,141 INFO L87 Difference]: Start difference. First operand 754 states and 1065 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:28:02,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:02,257 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2024-11-24 00:28:02,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:02,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-24 00:28:02,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:02,263 INFO L225 Difference]: With dead ends: 1415 [2024-11-24 00:28:02,264 INFO L226 Difference]: Without dead ends: 774 [2024-11-24 00:28:02,266 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:02,266 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 4 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:02,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:02,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-24 00:28:02,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2024-11-24 00:28:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 774 states, 596 states have (on average 1.3976510067114094) internal successors, (833), 599 states have internal predecessors, (833), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2024-11-24 00:28:02,333 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2024-11-24 00:28:02,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:02,333 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2024-11-24 00:28:02,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:28:02,334 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2024-11-24 00:28:02,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-24 00:28:02,336 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:02,336 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:02,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:28:02,336 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:02,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2024-11-24 00:28:02,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:02,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656732519] [2024-11-24 00:28:02,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:02,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:02,592 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:28:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:02,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656732519] [2024-11-24 00:28:02,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656732519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:02,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:02,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:02,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598008911] [2024-11-24 00:28:02,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:02,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:02,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:02,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:02,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:02,594 INFO L87 Difference]: Start difference. First operand 774 states and 1081 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:28:02,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:02,749 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2024-11-24 00:28:02,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:02,751 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-24 00:28:02,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:02,757 INFO L225 Difference]: With dead ends: 1459 [2024-11-24 00:28:02,758 INFO L226 Difference]: Without dead ends: 798 [2024-11-24 00:28:02,760 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:02,761 INFO L435 NwaCegarLoop]: 258 mSDtfsCounter, 5 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:02,761 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 765 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:02,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-24 00:28:02,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2024-11-24 00:28:02,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 616 states have (on average 1.3847402597402598) internal successors, (853), 619 states have internal predecessors, (853), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:28:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2024-11-24 00:28:02,845 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2024-11-24 00:28:02,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:02,846 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2024-11-24 00:28:02,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:28:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2024-11-24 00:28:02,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 00:28:02,850 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:02,850 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:02,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:28:02,850 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:02,851 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:02,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2024-11-24 00:28:02,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:02,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361315187] [2024-11-24 00:28:02,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:02,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:28:03,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:03,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361315187] [2024-11-24 00:28:03,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361315187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:03,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:03,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:03,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832014588] [2024-11-24 00:28:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:03,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:03,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:03,568 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:03,568 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:03,568 INFO L87 Difference]: Start difference. First operand 798 states and 1101 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:28:04,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:04,040 INFO L93 Difference]: Finished difference Result 2053 states and 2823 transitions. [2024-11-24 00:28:04,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:28:04,040 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-24 00:28:04,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:04,049 INFO L225 Difference]: With dead ends: 2053 [2024-11-24 00:28:04,050 INFO L226 Difference]: Without dead ends: 1368 [2024-11-24 00:28:04,052 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:04,053 INFO L435 NwaCegarLoop]: 263 mSDtfsCounter, 196 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:04,053 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1476 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:28:04,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-24 00:28:04,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1082. [2024-11-24 00:28:04,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 827 states have (on average 1.3724304715840387) internal successors, (1135), 832 states have internal predecessors, (1135), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-24 00:28:04,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2024-11-24 00:28:04,170 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2024-11-24 00:28:04,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:04,170 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2024-11-24 00:28:04,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:28:04,171 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2024-11-24 00:28:04,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 00:28:04,172 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:04,172 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:04,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:28:04,173 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:04,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2024-11-24 00:28:04,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:04,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572076532] [2024-11-24 00:28:04,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:04,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:04,367 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:28:04,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:04,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572076532] [2024-11-24 00:28:04,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572076532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:04,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:04,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635714327] [2024-11-24 00:28:04,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:04,368 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:04,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:04,369 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:04,369 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:04,369 INFO L87 Difference]: Start difference. First operand 1082 states and 1479 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:28:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:04,500 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2024-11-24 00:28:04,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:04,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-24 00:28:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:04,509 INFO L225 Difference]: With dead ends: 2007 [2024-11-24 00:28:04,509 INFO L226 Difference]: Without dead ends: 1106 [2024-11-24 00:28:04,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:04,513 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:04,513 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 763 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:04,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-24 00:28:04,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-24 00:28:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 845 states have (on average 1.3644970414201183) internal successors, (1153), 850 states have internal predecessors, (1153), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-24 00:28:04,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2024-11-24 00:28:04,634 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2024-11-24 00:28:04,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:04,634 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2024-11-24 00:28:04,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:28:04,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2024-11-24 00:28:04,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 00:28:04,636 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:04,636 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:04,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:28:04,637 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:04,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:04,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2024-11-24 00:28:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833134530] [2024-11-24 00:28:04,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:04,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:04,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:28:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833134530] [2024-11-24 00:28:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833134530] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962770502] [2024-11-24 00:28:05,127 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:05,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:05,127 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:05,132 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:05,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:28:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:05,362 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:28:05,371 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:05,523 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:28:05,523 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:28:05,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962770502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:05,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:28:05,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-24 00:28:05,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093754069] [2024-11-24 00:28:05,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:05,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:28:05,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:05,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:28:05,525 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:28:05,525 INFO L87 Difference]: Start difference. First operand 1106 states and 1497 transitions. Second operand has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:28:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:05,851 INFO L93 Difference]: Finished difference Result 2371 states and 3335 transitions. [2024-11-24 00:28:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:28:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-24 00:28:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:05,862 INFO L225 Difference]: With dead ends: 2371 [2024-11-24 00:28:05,862 INFO L226 Difference]: Without dead ends: 1534 [2024-11-24 00:28:05,865 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:28:05,867 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 139 mSDsluCounter, 2428 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:05,867 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2866 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:05,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2024-11-24 00:28:05,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2024-11-24 00:28:05,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1114 states, 849 states have (on average 1.3557126030624265) internal successors, (1151), 856 states have internal predecessors, (1151), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 00:28:06,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1499 transitions. [2024-11-24 00:28:06,005 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1499 transitions. Word has length 90 [2024-11-24 00:28:06,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:06,006 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1499 transitions. [2024-11-24 00:28:06,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:28:06,006 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1499 transitions. [2024-11-24 00:28:06,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 00:28:06,009 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:06,010 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:06,020 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:28:06,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:28:06,210 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:06,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:06,211 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2024-11-24 00:28:06,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:06,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379929117] [2024-11-24 00:28:06,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:06,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:06,431 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:28:06,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:06,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379929117] [2024-11-24 00:28:06,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379929117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:06,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:06,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:06,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038447118] [2024-11-24 00:28:06,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:06,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:06,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:06,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:06,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:06,433 INFO L87 Difference]: Start difference. First operand 1114 states and 1499 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:28:06,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:06,716 INFO L93 Difference]: Finished difference Result 2010 states and 2716 transitions. [2024-11-24 00:28:06,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:28:06,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-24 00:28:06,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:06,724 INFO L225 Difference]: With dead ends: 2010 [2024-11-24 00:28:06,724 INFO L226 Difference]: Without dead ends: 1159 [2024-11-24 00:28:06,727 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:06,728 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 255 mSDsluCounter, 1226 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:06,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1485 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:06,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-24 00:28:06,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1117. [2024-11-24 00:28:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1117 states, 863 states have (on average 1.3487833140208574) internal successors, (1164), 875 states have internal predecessors, (1164), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-24 00:28:06,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1488 transitions. [2024-11-24 00:28:06,842 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1488 transitions. Word has length 93 [2024-11-24 00:28:06,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:06,843 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1488 transitions. [2024-11-24 00:28:06,843 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:28:06,843 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1488 transitions. [2024-11-24 00:28:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-24 00:28:06,845 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:06,845 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:06,845 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:28:06,845 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:06,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:06,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2024-11-24 00:28:06,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:06,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508552380] [2024-11-24 00:28:06,846 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:06,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:07,711 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:28:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508552380] [2024-11-24 00:28:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508552380] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:07,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:07,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:07,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993129282] [2024-11-24 00:28:07,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:07,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:07,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:07,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:07,715 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:07,715 INFO L87 Difference]: Start difference. First operand 1117 states and 1488 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:28:08,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:08,054 INFO L93 Difference]: Finished difference Result 1989 states and 2661 transitions. [2024-11-24 00:28:08,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:28:08,055 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-24 00:28:08,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:08,064 INFO L225 Difference]: With dead ends: 1989 [2024-11-24 00:28:08,064 INFO L226 Difference]: Without dead ends: 1115 [2024-11-24 00:28:08,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:08,067 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 150 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1601 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:08,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1601 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:28:08,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-24 00:28:08,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1008. [2024-11-24 00:28:08,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 781 states have (on average 1.3508322663252241) internal successors, (1055), 791 states have internal predecessors, (1055), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-24 00:28:08,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1345 transitions. [2024-11-24 00:28:08,171 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1345 transitions. Word has length 95 [2024-11-24 00:28:08,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:08,171 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1345 transitions. [2024-11-24 00:28:08,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:28:08,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1345 transitions. [2024-11-24 00:28:08,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 00:28:08,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:08,173 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:08,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:28:08,173 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:08,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:08,174 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2024-11-24 00:28:08,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:08,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038268375] [2024-11-24 00:28:08,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:08,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:08,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:08,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:28:08,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:08,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038268375] [2024-11-24 00:28:08,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038268375] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:08,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:08,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:08,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584808173] [2024-11-24 00:28:08,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:08,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:08,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:08,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:08,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:08,830 INFO L87 Difference]: Start difference. First operand 1008 states and 1345 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:09,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:09,430 INFO L93 Difference]: Finished difference Result 1934 states and 2578 transitions. [2024-11-24 00:28:09,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:28:09,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 96 [2024-11-24 00:28:09,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:09,439 INFO L225 Difference]: With dead ends: 1934 [2024-11-24 00:28:09,439 INFO L226 Difference]: Without dead ends: 1099 [2024-11-24 00:28:09,441 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:09,442 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 418 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:09,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1472 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:28:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-24 00:28:09,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1046. [2024-11-24 00:28:09,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1046 states, 804 states have (on average 1.3296019900497513) internal successors, (1069), 815 states have internal predecessors, (1069), 154 states have call successors, (154), 87 states have call predecessors, (154), 87 states have return successors, (154), 143 states have call predecessors, (154), 154 states have call successors, (154) [2024-11-24 00:28:09,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1377 transitions. [2024-11-24 00:28:09,579 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1377 transitions. Word has length 96 [2024-11-24 00:28:09,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:09,580 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1377 transitions. [2024-11-24 00:28:09,580 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:09,580 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1377 transitions. [2024-11-24 00:28:09,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 00:28:09,582 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:09,582 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:09,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:28:09,583 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:09,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1605607307, now seen corresponding path program 1 times [2024-11-24 00:28:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:09,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798356441] [2024-11-24 00:28:09,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:09,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:09,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:10,208 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:28:10,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:10,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798356441] [2024-11-24 00:28:10,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798356441] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:10,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:10,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:10,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880765080] [2024-11-24 00:28:10,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:10,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:10,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:10,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:10,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:10,210 INFO L87 Difference]: Start difference. First operand 1046 states and 1377 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:28:10,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:10,849 INFO L93 Difference]: Finished difference Result 2019 states and 2644 transitions. [2024-11-24 00:28:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:28:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 98 [2024-11-24 00:28:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:10,858 INFO L225 Difference]: With dead ends: 2019 [2024-11-24 00:28:10,858 INFO L226 Difference]: Without dead ends: 1159 [2024-11-24 00:28:10,861 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:10,862 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 407 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1262 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:10,862 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:28:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-24 00:28:11,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1068. [2024-11-24 00:28:11,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 818 states have (on average 1.3141809290953546) internal successors, (1075), 830 states have internal predecessors, (1075), 157 states have call successors, (157), 92 states have call predecessors, (157), 92 states have return successors, (157), 145 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-24 00:28:11,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1389 transitions. [2024-11-24 00:28:11,040 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1389 transitions. Word has length 98 [2024-11-24 00:28:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:11,041 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1389 transitions. [2024-11-24 00:28:11,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:28:11,041 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1389 transitions. [2024-11-24 00:28:11,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 00:28:11,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:11,043 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:11,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:28:11,043 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:11,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1784538508, now seen corresponding path program 1 times [2024-11-24 00:28:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728461166] [2024-11-24 00:28:11,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:11,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:11,164 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:11,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:11,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728461166] [2024-11-24 00:28:11,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728461166] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:11,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:11,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:11,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978954887] [2024-11-24 00:28:11,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:11,166 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:11,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:11,166 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:11,166 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:11,167 INFO L87 Difference]: Start difference. First operand 1068 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:11,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:11,496 INFO L93 Difference]: Finished difference Result 2778 states and 3641 transitions. [2024-11-24 00:28:11,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:28:11,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-24 00:28:11,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:11,509 INFO L225 Difference]: With dead ends: 2778 [2024-11-24 00:28:11,509 INFO L226 Difference]: Without dead ends: 1974 [2024-11-24 00:28:11,512 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:11,513 INFO L435 NwaCegarLoop]: 460 mSDtfsCounter, 199 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1151 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:11,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 1151 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:11,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-24 00:28:11,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1793. [2024-11-24 00:28:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1793 states, 1355 states have (on average 1.3151291512915129) internal successors, (1782), 1375 states have internal predecessors, (1782), 280 states have call successors, (280), 157 states have call predecessors, (280), 157 states have return successors, (280), 260 states have call predecessors, (280), 280 states have call successors, (280) [2024-11-24 00:28:11,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2342 transitions. [2024-11-24 00:28:11,811 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2342 transitions. Word has length 99 [2024-11-24 00:28:11,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:11,811 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2342 transitions. [2024-11-24 00:28:11,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:11,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2342 transitions. [2024-11-24 00:28:11,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:28:11,814 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:11,815 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:11,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:28:11,816 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:11,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:11,816 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2024-11-24 00:28:11,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:11,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940045856] [2024-11-24 00:28:11,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:11,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:11,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:11,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:11,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940045856] [2024-11-24 00:28:11,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940045856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:11,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:11,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904943068] [2024-11-24 00:28:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:11,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:11,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:11,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:11,980 INFO L87 Difference]: Start difference. First operand 1793 states and 2342 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:12,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:12,464 INFO L93 Difference]: Finished difference Result 4547 states and 5974 transitions. [2024-11-24 00:28:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:28:12,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-24 00:28:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:12,483 INFO L225 Difference]: With dead ends: 4547 [2024-11-24 00:28:12,483 INFO L226 Difference]: Without dead ends: 3091 [2024-11-24 00:28:12,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:12,491 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 207 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:12,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1189 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:12,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2024-11-24 00:28:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2814. [2024-11-24 00:28:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2814 states, 2101 states have (on average 1.3055687767729653) internal successors, (2743), 2132 states have internal predecessors, (2743), 460 states have call successors, (460), 252 states have call predecessors, (460), 252 states have return successors, (460), 429 states have call predecessors, (460), 460 states have call successors, (460) [2024-11-24 00:28:12,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3663 transitions. [2024-11-24 00:28:12,934 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3663 transitions. Word has length 101 [2024-11-24 00:28:12,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:12,936 INFO L471 AbstractCegarLoop]: Abstraction has 2814 states and 3663 transitions. [2024-11-24 00:28:12,936 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:12,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3663 transitions. [2024-11-24 00:28:12,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 00:28:12,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:12,940 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:12,940 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:28:12,940 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:12,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:12,941 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2024-11-24 00:28:12,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:12,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435087701] [2024-11-24 00:28:12,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:12,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:12,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:13,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:13,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435087701] [2024-11-24 00:28:13,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435087701] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:13,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:13,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:13,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577083342] [2024-11-24 00:28:13,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:13,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:13,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:13,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:13,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:13,063 INFO L87 Difference]: Start difference. First operand 2814 states and 3663 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:13,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:13,645 INFO L93 Difference]: Finished difference Result 6570 states and 8593 transitions. [2024-11-24 00:28:13,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:28:13,649 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-24 00:28:13,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:13,679 INFO L225 Difference]: With dead ends: 6570 [2024-11-24 00:28:13,679 INFO L226 Difference]: Without dead ends: 4213 [2024-11-24 00:28:13,686 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:13,686 INFO L435 NwaCegarLoop]: 486 mSDtfsCounter, 200 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1201 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:13,687 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1201 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:13,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2024-11-24 00:28:14,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4030. [2024-11-24 00:28:14,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4030 states, 2993 states have (on average 1.301703975943869) internal successors, (3896), 3037 states have internal predecessors, (3896), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-24 00:28:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5240 transitions. [2024-11-24 00:28:14,252 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5240 transitions. Word has length 101 [2024-11-24 00:28:14,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:14,252 INFO L471 AbstractCegarLoop]: Abstraction has 4030 states and 5240 transitions. [2024-11-24 00:28:14,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:14,253 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5240 transitions. [2024-11-24 00:28:14,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:28:14,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:14,257 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:14,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:28:14,257 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:14,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2024-11-24 00:28:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318697506] [2024-11-24 00:28:14,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:14,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:14,325 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:14,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:14,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318697506] [2024-11-24 00:28:14,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318697506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:14,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:14,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:28:14,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905043192] [2024-11-24 00:28:14,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:14,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:28:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:14,327 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:28:14,327 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:28:14,327 INFO L87 Difference]: Start difference. First operand 4030 states and 5240 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:14,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:14,840 INFO L93 Difference]: Finished difference Result 7739 states and 10111 transitions. [2024-11-24 00:28:14,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:28:14,841 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-24 00:28:14,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:14,879 INFO L225 Difference]: With dead ends: 7739 [2024-11-24 00:28:14,880 INFO L226 Difference]: Without dead ends: 4063 [2024-11-24 00:28:14,890 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:28:14,890 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 6 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:14,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 487 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-11-24 00:28:15,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4036. [2024-11-24 00:28:15,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4036 states, 2999 states have (on average 1.3011003667889296) internal successors, (3902), 3043 states have internal predecessors, (3902), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-24 00:28:15,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5246 transitions. [2024-11-24 00:28:15,654 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5246 transitions. Word has length 102 [2024-11-24 00:28:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:15,655 INFO L471 AbstractCegarLoop]: Abstraction has 4036 states and 5246 transitions. [2024-11-24 00:28:15,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:15,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5246 transitions. [2024-11-24 00:28:15,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:28:15,659 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:15,659 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:15,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:28:15,660 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:15,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2024-11-24 00:28:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:15,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334494706] [2024-11-24 00:28:15,661 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:15,835 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:15,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:15,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334494706] [2024-11-24 00:28:15,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334494706] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:15,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:15,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:15,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066161406] [2024-11-24 00:28:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:15,836 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:15,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:15,836 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:15,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:15,837 INFO L87 Difference]: Start difference. First operand 4036 states and 5246 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:16,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:16,293 INFO L93 Difference]: Finished difference Result 7704 states and 10038 transitions. [2024-11-24 00:28:16,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:16,294 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-24 00:28:16,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:16,320 INFO L225 Difference]: With dead ends: 7704 [2024-11-24 00:28:16,321 INFO L226 Difference]: Without dead ends: 3744 [2024-11-24 00:28:16,330 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:16,330 INFO L435 NwaCegarLoop]: 266 mSDtfsCounter, 83 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 746 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:16,331 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 746 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:16,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2024-11-24 00:28:16,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3681. [2024-11-24 00:28:16,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3681 states, 2727 states have (on average 1.3105977264393105) internal successors, (3574), 2761 states have internal predecessors, (3574), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-24 00:28:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4814 transitions. [2024-11-24 00:28:16,732 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4814 transitions. Word has length 103 [2024-11-24 00:28:16,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:16,733 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4814 transitions. [2024-11-24 00:28:16,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4814 transitions. [2024-11-24 00:28:16,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:28:16,735 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:16,735 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:16,735 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:28:16,736 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:16,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2024-11-24 00:28:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:16,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173551725] [2024-11-24 00:28:16,736 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:16,812 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:16,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:16,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173551725] [2024-11-24 00:28:16,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173551725] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:16,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:16,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:28:16,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478917101] [2024-11-24 00:28:16,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:16,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:28:16,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:16,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:28:16,814 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:28:16,815 INFO L87 Difference]: Start difference. First operand 3681 states and 4814 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:17,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:17,272 INFO L93 Difference]: Finished difference Result 7232 states and 9498 transitions. [2024-11-24 00:28:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:28:17,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-24 00:28:17,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:17,294 INFO L225 Difference]: With dead ends: 7232 [2024-11-24 00:28:17,294 INFO L226 Difference]: Without dead ends: 3732 [2024-11-24 00:28:17,303 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:28:17,304 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 6 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:17,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 485 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:28:17,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3732 states. [2024-11-24 00:28:17,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3732 to 3691. [2024-11-24 00:28:17,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3691 states, 2737 states have (on average 1.3094629156010231) internal successors, (3584), 2771 states have internal predecessors, (3584), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-24 00:28:17,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4824 transitions. [2024-11-24 00:28:17,722 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4824 transitions. Word has length 104 [2024-11-24 00:28:17,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:17,722 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4824 transitions. [2024-11-24 00:28:17,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:17,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4824 transitions. [2024-11-24 00:28:17,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:28:17,728 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:17,728 INFO L218 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:17,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:28:17,728 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:17,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:17,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2024-11-24 00:28:17,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:17,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743927923] [2024-11-24 00:28:17,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:17,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:17,937 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:28:17,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:17,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743927923] [2024-11-24 00:28:17,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743927923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:17,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:17,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:28:17,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157197086] [2024-11-24 00:28:17,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:17,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:28:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:17,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:28:17,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:28:17,940 INFO L87 Difference]: Start difference. First operand 3691 states and 4824 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:18,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:18,372 INFO L93 Difference]: Finished difference Result 7183 states and 9409 transitions. [2024-11-24 00:28:18,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:28:18,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-24 00:28:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:18,392 INFO L225 Difference]: With dead ends: 7183 [2024-11-24 00:28:18,393 INFO L226 Difference]: Without dead ends: 3611 [2024-11-24 00:28:18,401 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:28:18,402 INFO L435 NwaCegarLoop]: 271 mSDtfsCounter, 64 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:18,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 756 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:18,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2024-11-24 00:28:18,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2783. [2024-11-24 00:28:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2063 states have (on average 1.303926320891905) internal successors, (2690), 2082 states have internal predecessors, (2690), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-24 00:28:18,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3628 transitions. [2024-11-24 00:28:18,728 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3628 transitions. Word has length 104 [2024-11-24 00:28:18,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:18,728 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 3628 transitions. [2024-11-24 00:28:18,728 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:28:18,728 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3628 transitions. [2024-11-24 00:28:18,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 00:28:18,734 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:18,734 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-24 00:28:18,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 00:28:18,734 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:18,735 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:18,735 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2024-11-24 00:28:18,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:18,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832446097] [2024-11-24 00:28:18,735 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:18,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:19,894 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:19,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832446097] [2024-11-24 00:28:19,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832446097] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:19,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339965887] [2024-11-24 00:28:19,896 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:19,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:19,896 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:19,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:19,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:28:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:20,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:28:20,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:20,489 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-24 00:28:20,489 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-24 00:28:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339965887] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:28:20,936 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:28:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-24 00:28:20,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881480131] [2024-11-24 00:28:20,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:28:20,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 00:28:20,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:20,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 00:28:20,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-24 00:28:20,941 INFO L87 Difference]: Start difference. First operand 2783 states and 3628 transitions. Second operand has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-24 00:28:25,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:25,151 INFO L93 Difference]: Finished difference Result 9288 states and 12094 transitions. [2024-11-24 00:28:25,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-24 00:28:25,152 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) Word has length 153 [2024-11-24 00:28:25,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:25,187 INFO L225 Difference]: With dead ends: 9288 [2024-11-24 00:28:25,187 INFO L226 Difference]: Without dead ends: 6696 [2024-11-24 00:28:25,196 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 00:28:25,198 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 2266 mSDsluCounter, 4567 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2281 SdHoareTripleChecker+Valid, 4967 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:25,198 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2281 Valid, 4967 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:28:25,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2024-11-24 00:28:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 5643. [2024-11-24 00:28:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5643 states, 4150 states have (on average 1.304578313253012) internal successors, (5414), 4187 states have internal predecessors, (5414), 972 states have call successors, (972), 520 states have call predecessors, (972), 520 states have return successors, (972), 935 states have call predecessors, (972), 972 states have call successors, (972) [2024-11-24 00:28:25,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 7358 transitions. [2024-11-24 00:28:25,934 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 7358 transitions. Word has length 153 [2024-11-24 00:28:25,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:25,934 INFO L471 AbstractCegarLoop]: Abstraction has 5643 states and 7358 transitions. [2024-11-24 00:28:25,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 12.11111111111111) internal successors, (218), 18 states have internal predecessors, (218), 9 states have call successors, (38), 4 states have call predecessors, (38), 8 states have return successors, (38), 9 states have call predecessors, (38), 9 states have call successors, (38) [2024-11-24 00:28:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 7358 transitions. [2024-11-24 00:28:25,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 00:28:25,944 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:25,944 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2024-11-24 00:28:25,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 00:28:26,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 00:28:26,148 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:26,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:26,150 INFO L85 PathProgramCache]: Analyzing trace with hash -950230078, now seen corresponding path program 1 times [2024-11-24 00:28:26,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:26,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922393125] [2024-11-24 00:28:26,150 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:26,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:26,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-24 00:28:26,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922393125] [2024-11-24 00:28:26,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922393125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:26,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774889297] [2024-11-24 00:28:26,998 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:26,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:26,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:27,001 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:27,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:28:27,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:27,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 00:28:27,277 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:27,828 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 37 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:28:27,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:27,956 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-11-24 00:28:27,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774889297] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:27,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 00:28:27,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 17] total 24 [2024-11-24 00:28:27,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328706179] [2024-11-24 00:28:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:27,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:28:27,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:27,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:28:27,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:28:27,958 INFO L87 Difference]: Start difference. First operand 5643 states and 7358 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-24 00:28:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:28,461 INFO L93 Difference]: Finished difference Result 9923 states and 12992 transitions. [2024-11-24 00:28:28,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:28:28,462 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 155 [2024-11-24 00:28:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:28,490 INFO L225 Difference]: With dead ends: 9923 [2024-11-24 00:28:28,490 INFO L226 Difference]: Without dead ends: 4448 [2024-11-24 00:28:28,503 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:28:28,507 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:28,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1021 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:28:28,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-24 00:28:29,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4448. [2024-11-24 00:28:29,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4448 states, 3292 states have (on average 1.3049817739975698) internal successors, (4296), 3320 states have internal predecessors, (4296), 751 states have call successors, (751), 404 states have call predecessors, (751), 404 states have return successors, (751), 723 states have call predecessors, (751), 751 states have call successors, (751) [2024-11-24 00:28:29,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 5798 transitions. [2024-11-24 00:28:29,064 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 5798 transitions. Word has length 155 [2024-11-24 00:28:29,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:29,064 INFO L471 AbstractCegarLoop]: Abstraction has 4448 states and 5798 transitions. [2024-11-24 00:28:29,064 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-24 00:28:29,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 5798 transitions. [2024-11-24 00:28:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:28:29,072 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:29,072 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:29,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-24 00:28:29,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:28:29,273 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:29,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:29,274 INFO L85 PathProgramCache]: Analyzing trace with hash -896873483, now seen corresponding path program 1 times [2024-11-24 00:28:29,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:29,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861025138] [2024-11-24 00:28:29,274 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:29,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:30,356 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:30,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861025138] [2024-11-24 00:28:30,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861025138] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:30,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48545227] [2024-11-24 00:28:30,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:30,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:30,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:30,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:30,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:28:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:30,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:28:30,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 61 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:28:31,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:32,354 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:32,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48545227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:28:32,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:28:32,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-11-24 00:28:32,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633302759] [2024-11-24 00:28:32,354 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:28:32,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:28:32,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:32,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:28:32,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:28:32,357 INFO L87 Difference]: Start difference. First operand 4448 states and 5798 transitions. Second operand has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-24 00:28:38,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:38,350 INFO L93 Difference]: Finished difference Result 10824 states and 14092 transitions. [2024-11-24 00:28:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-24 00:28:38,351 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 156 [2024-11-24 00:28:38,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:38,384 INFO L225 Difference]: With dead ends: 10824 [2024-11-24 00:28:38,384 INFO L226 Difference]: Without dead ends: 6629 [2024-11-24 00:28:38,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1609, Invalid=6581, Unknown=0, NotChecked=0, Total=8190 [2024-11-24 00:28:38,398 INFO L435 NwaCegarLoop]: 327 mSDtfsCounter, 2158 mSDsluCounter, 3368 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 631 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 3695 SdHoareTripleChecker+Invalid, 2321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 631 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:38,398 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 3695 Invalid, 2321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [631 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 00:28:38,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2024-11-24 00:28:39,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6232. [2024-11-24 00:28:39,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6232 states, 4602 states have (on average 1.2970447631464581) internal successors, (5969), 4643 states have internal predecessors, (5969), 1050 states have call successors, (1050), 579 states have call predecessors, (1050), 579 states have return successors, (1050), 1009 states have call predecessors, (1050), 1050 states have call successors, (1050) [2024-11-24 00:28:39,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8069 transitions. [2024-11-24 00:28:39,507 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8069 transitions. Word has length 156 [2024-11-24 00:28:39,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:39,507 INFO L471 AbstractCegarLoop]: Abstraction has 6232 states and 8069 transitions. [2024-11-24 00:28:39,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.461538461538462) internal successors, (246), 26 states have internal predecessors, (246), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-24 00:28:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8069 transitions. [2024-11-24 00:28:39,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:28:39,519 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:39,519 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:28:39,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-24 00:28:39,720 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:39,720 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:39,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1833817774, now seen corresponding path program 1 times [2024-11-24 00:28:39,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:39,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227363597] [2024-11-24 00:28:39,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:39,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2024-11-24 00:28:39,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:39,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227363597] [2024-11-24 00:28:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227363597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:28:39,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:28:39,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:28:39,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306904350] [2024-11-24 00:28:39,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:28:39,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:28:39,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:39,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:28:39,958 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:28:39,958 INFO L87 Difference]: Start difference. First operand 6232 states and 8069 transitions. Second operand has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:28:41,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:41,677 INFO L93 Difference]: Finished difference Result 18294 states and 23745 transitions. [2024-11-24 00:28:41,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:28:41,678 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 158 [2024-11-24 00:28:41,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:41,730 INFO L225 Difference]: With dead ends: 18294 [2024-11-24 00:28:41,730 INFO L226 Difference]: Without dead ends: 12367 [2024-11-24 00:28:41,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:28:41,743 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 223 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 2568 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:41,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 2568 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:28:41,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2024-11-24 00:28:43,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 8853. [2024-11-24 00:28:43,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8853 states, 6489 states have (on average 1.294960702727693) internal successors, (8403), 6549 states have internal predecessors, (8403), 1539 states have call successors, (1539), 824 states have call predecessors, (1539), 824 states have return successors, (1539), 1479 states have call predecessors, (1539), 1539 states have call successors, (1539) [2024-11-24 00:28:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 11481 transitions. [2024-11-24 00:28:43,120 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 11481 transitions. Word has length 158 [2024-11-24 00:28:43,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:43,121 INFO L471 AbstractCegarLoop]: Abstraction has 8853 states and 11481 transitions. [2024-11-24 00:28:43,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.142857142857142) internal successors, (92), 6 states have internal predecessors, (92), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 00:28:43,121 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 11481 transitions. [2024-11-24 00:28:43,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:28:43,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:43,136 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:43,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 00:28:43,136 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:43,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:43,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1397411830, now seen corresponding path program 1 times [2024-11-24 00:28:43,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:43,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464298573] [2024-11-24 00:28:43,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:43,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:44,247 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:44,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:44,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464298573] [2024-11-24 00:28:44,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464298573] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:44,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340901811] [2024-11-24 00:28:44,248 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:44,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:44,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:44,250 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:44,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 00:28:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:44,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 00:28:44,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:45,382 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 59 proven. 17 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:28:45,382 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:48,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340901811] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:28:48,240 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:28:48,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2024-11-24 00:28:48,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966209476] [2024-11-24 00:28:48,240 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:28:48,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 00:28:48,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:48,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 00:28:48,242 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2024-11-24 00:28:48,243 INFO L87 Difference]: Start difference. First operand 8853 states and 11481 transitions. Second operand has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-24 00:28:51,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:51,999 INFO L93 Difference]: Finished difference Result 18172 states and 23634 transitions. [2024-11-24 00:28:51,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:28:51,999 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) Word has length 158 [2024-11-24 00:28:52,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:52,042 INFO L225 Difference]: With dead ends: 18172 [2024-11-24 00:28:52,042 INFO L226 Difference]: Without dead ends: 9624 [2024-11-24 00:28:52,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 00:28:52,058 INFO L435 NwaCegarLoop]: 465 mSDtfsCounter, 847 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 2377 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 2560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 2377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:52,058 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 4253 Invalid, 2560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 2377 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:28:52,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2024-11-24 00:28:53,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9260. [2024-11-24 00:28:53,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9260 states, 6799 states have (on average 1.2944550669216062) internal successors, (8801), 6862 states have internal predecessors, (8801), 1602 states have call successors, (1602), 858 states have call predecessors, (1602), 858 states have return successors, (1602), 1539 states have call predecessors, (1602), 1602 states have call successors, (1602) [2024-11-24 00:28:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9260 states to 9260 states and 12005 transitions. [2024-11-24 00:28:53,763 INFO L78 Accepts]: Start accepts. Automaton has 9260 states and 12005 transitions. Word has length 158 [2024-11-24 00:28:53,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:28:53,763 INFO L471 AbstractCegarLoop]: Abstraction has 9260 states and 12005 transitions. [2024-11-24 00:28:53,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.03448275862069) internal successors, (262), 29 states have internal predecessors, (262), 10 states have call successors, (37), 5 states have call predecessors, (37), 6 states have return successors, (36), 10 states have call predecessors, (36), 10 states have call successors, (36) [2024-11-24 00:28:53,764 INFO L276 IsEmpty]: Start isEmpty. Operand 9260 states and 12005 transitions. [2024-11-24 00:28:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 00:28:53,776 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:28:53,776 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:28:53,787 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 00:28:53,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:53,981 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:28:53,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:28:53,981 INFO L85 PathProgramCache]: Analyzing trace with hash -747886001, now seen corresponding path program 1 times [2024-11-24 00:28:53,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:28:53,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91408007] [2024-11-24 00:28:53,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:53,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:28:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:54,697 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:54,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:28:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91408007] [2024-11-24 00:28:54,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91408007] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:28:54,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141600376] [2024-11-24 00:28:54,697 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:28:54,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:28:54,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:28:54,700 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:28:54,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 00:28:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:28:54,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 00:28:54,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:28:55,500 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 66 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:28:55,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:28:55,974 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:28:55,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141600376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:28:55,975 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:28:55,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-24 00:28:55,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159348931] [2024-11-24 00:28:55,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:28:55,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 00:28:55,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:28:55,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 00:28:55,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-24 00:28:55,977 INFO L87 Difference]: Start difference. First operand 9260 states and 12005 transitions. Second operand has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-24 00:28:59,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:28:59,755 INFO L93 Difference]: Finished difference Result 23260 states and 30243 transitions. [2024-11-24 00:28:59,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 00:28:59,756 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 159 [2024-11-24 00:28:59,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:28:59,811 INFO L225 Difference]: With dead ends: 23260 [2024-11-24 00:28:59,812 INFO L226 Difference]: Without dead ends: 14305 [2024-11-24 00:28:59,829 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 00:28:59,829 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 1305 mSDsluCounter, 2614 mSDsCounter, 0 mSdLazyCounter, 1773 mSolverCounterSat, 227 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1305 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 227 IncrementalHoareTripleChecker+Valid, 1773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:28:59,830 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1305 Valid, 3058 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [227 Valid, 1773 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 00:28:59,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14305 states. [2024-11-24 00:29:01,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14305 to 13110. [2024-11-24 00:29:01,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13110 states, 9603 states have (on average 1.2983442674164323) internal successors, (12468), 9698 states have internal predecessors, (12468), 2284 states have call successors, (2284), 1222 states have call predecessors, (2284), 1222 states have return successors, (2284), 2189 states have call predecessors, (2284), 2284 states have call successors, (2284) [2024-11-24 00:29:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13110 states to 13110 states and 17036 transitions. [2024-11-24 00:29:01,950 INFO L78 Accepts]: Start accepts. Automaton has 13110 states and 17036 transitions. Word has length 159 [2024-11-24 00:29:01,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:01,951 INFO L471 AbstractCegarLoop]: Abstraction has 13110 states and 17036 transitions. [2024-11-24 00:29:01,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 12.352941176470589) internal successors, (210), 17 states have internal predecessors, (210), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-24 00:29:01,951 INFO L276 IsEmpty]: Start isEmpty. Operand 13110 states and 17036 transitions. [2024-11-24 00:29:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:29:01,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:01,963 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:29:01,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 00:29:02,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-24 00:29:02,168 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:02,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:02,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1784161869, now seen corresponding path program 1 times [2024-11-24 00:29:02,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:02,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241616396] [2024-11-24 00:29:02,169 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:02,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:29:02,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241616396] [2024-11-24 00:29:02,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241616396] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:02,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1107194654] [2024-11-24 00:29:02,816 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:02,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:02,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:02,818 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:02,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 00:29:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:03,102 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 00:29:03,107 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 55 proven. 24 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:29:03,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:04,294 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:29:04,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1107194654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:04,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:04,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-24 00:29:04,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751134737] [2024-11-24 00:29:04,295 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:04,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 00:29:04,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:04,296 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 00:29:04,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:29:04,297 INFO L87 Difference]: Start difference. First operand 13110 states and 17036 transitions. Second operand has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-24 00:29:08,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:08,933 INFO L93 Difference]: Finished difference Result 31996 states and 41741 transitions. [2024-11-24 00:29:08,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 00:29:08,934 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 160 [2024-11-24 00:29:08,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:09,012 INFO L225 Difference]: With dead ends: 31996 [2024-11-24 00:29:09,012 INFO L226 Difference]: Without dead ends: 19191 [2024-11-24 00:29:09,040 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 00:29:09,040 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 1047 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 1554 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:09,041 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 2627 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1554 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-24 00:29:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19191 states. [2024-11-24 00:29:11,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19191 to 18940. [2024-11-24 00:29:11,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18940 states, 13926 states have (on average 1.3018095648427401) internal successors, (18129), 14060 states have internal predecessors, (18129), 3255 states have call successors, (3255), 1758 states have call predecessors, (3255), 1758 states have return successors, (3255), 3121 states have call predecessors, (3255), 3255 states have call successors, (3255) [2024-11-24 00:29:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18940 states to 18940 states and 24639 transitions. [2024-11-24 00:29:12,020 INFO L78 Accepts]: Start accepts. Automaton has 18940 states and 24639 transitions. Word has length 160 [2024-11-24 00:29:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:12,020 INFO L471 AbstractCegarLoop]: Abstraction has 18940 states and 24639 transitions. [2024-11-24 00:29:12,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 12.5) internal successors, (225), 18 states have internal predecessors, (225), 7 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2024-11-24 00:29:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 18940 states and 24639 transitions. [2024-11-24 00:29:12,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 00:29:12,028 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:12,028 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:29:12,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 00:29:12,229 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-24 00:29:12,229 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:12,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:12,229 INFO L85 PathProgramCache]: Analyzing trace with hash 823751420, now seen corresponding path program 1 times [2024-11-24 00:29:12,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:12,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387861417] [2024-11-24 00:29:12,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:12,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 9 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:29:13,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387861417] [2024-11-24 00:29:13,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387861417] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:13,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418706970] [2024-11-24 00:29:13,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:13,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:13,122 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:13,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 00:29:13,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:13,418 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 00:29:13,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:13,727 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 69 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-24 00:29:13,727 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2024-11-24 00:29:14,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418706970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:14,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:14,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2024-11-24 00:29:14,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300189964] [2024-11-24 00:29:14,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:14,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:29:14,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:14,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:29:14,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:29:14,046 INFO L87 Difference]: Start difference. First operand 18940 states and 24639 transitions. Second operand has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-24 00:29:22,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:22,931 INFO L93 Difference]: Finished difference Result 51364 states and 66513 transitions. [2024-11-24 00:29:22,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 00:29:22,931 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) Word has length 160 [2024-11-24 00:29:22,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:23,055 INFO L225 Difference]: With dead ends: 51364 [2024-11-24 00:29:23,055 INFO L226 Difference]: Without dead ends: 32702 [2024-11-24 00:29:23,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=462, Invalid=2844, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 00:29:23,096 INFO L435 NwaCegarLoop]: 367 mSDtfsCounter, 1909 mSDsluCounter, 4350 mSDsCounter, 0 mSdLazyCounter, 1975 mSolverCounterSat, 815 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 4717 SdHoareTripleChecker+Invalid, 2790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 815 IncrementalHoareTripleChecker+Valid, 1975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:23,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1909 Valid, 4717 Invalid, 2790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [815 Valid, 1975 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 00:29:23,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32702 states. [2024-11-24 00:29:26,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32702 to 21770. [2024-11-24 00:29:26,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21770 states, 15969 states have (on average 1.3005197570292442) internal successors, (20768), 16132 states have internal predecessors, (20768), 3747 states have call successors, (3747), 2053 states have call predecessors, (3747), 2053 states have return successors, (3747), 3584 states have call predecessors, (3747), 3747 states have call successors, (3747) [2024-11-24 00:29:26,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21770 states to 21770 states and 28262 transitions. [2024-11-24 00:29:26,897 INFO L78 Accepts]: Start accepts. Automaton has 21770 states and 28262 transitions. Word has length 160 [2024-11-24 00:29:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:26,898 INFO L471 AbstractCegarLoop]: Abstraction has 21770 states and 28262 transitions. [2024-11-24 00:29:26,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.84) internal successors, (221), 21 states have internal predecessors, (221), 7 states have call successors, (32), 4 states have call predecessors, (32), 8 states have return successors, (34), 10 states have call predecessors, (34), 7 states have call successors, (34) [2024-11-24 00:29:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 21770 states and 28262 transitions. [2024-11-24 00:29:26,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 00:29:26,906 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:26,906 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:29:26,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 00:29:27,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-24 00:29:27,106 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:27,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:27,107 INFO L85 PathProgramCache]: Analyzing trace with hash -523124395, now seen corresponding path program 1 times [2024-11-24 00:29:27,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:27,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847848689] [2024-11-24 00:29:27,107 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:27,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:27,754 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 00:29:27,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847848689] [2024-11-24 00:29:27,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847848689] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:27,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510383499] [2024-11-24 00:29:27,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:27,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:27,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:27,757 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:27,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 00:29:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:28,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-24 00:29:28,058 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:28,571 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 68 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:29:28,572 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:29,261 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 00:29:29,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510383499] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:29,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:29,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 21 [2024-11-24 00:29:29,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222515999] [2024-11-24 00:29:29,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:29,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-24 00:29:29,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:29,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-24 00:29:29,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-24 00:29:29,264 INFO L87 Difference]: Start difference. First operand 21770 states and 28262 transitions. Second operand has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-24 00:29:36,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:29:36,391 INFO L93 Difference]: Finished difference Result 48045 states and 62461 transitions. [2024-11-24 00:29:36,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-24 00:29:36,392 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) Word has length 168 [2024-11-24 00:29:36,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:29:36,499 INFO L225 Difference]: With dead ends: 48045 [2024-11-24 00:29:36,499 INFO L226 Difference]: Without dead ends: 26594 [2024-11-24 00:29:36,541 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 331 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 461 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=394, Invalid=1498, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 00:29:36,542 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 1607 mSDsluCounter, 3054 mSDsCounter, 0 mSdLazyCounter, 1904 mSolverCounterSat, 445 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1607 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 2349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 445 IncrementalHoareTripleChecker+Valid, 1904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:29:36,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1607 Valid, 3431 Invalid, 2349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [445 Valid, 1904 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 00:29:36,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26594 states. [2024-11-24 00:29:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26594 to 26368. [2024-11-24 00:29:40,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26368 states, 19317 states have (on average 1.2997877517212817) internal successors, (25108), 19516 states have internal predecessors, (25108), 4560 states have call successors, (4560), 2490 states have call predecessors, (4560), 2490 states have return successors, (4560), 4361 states have call predecessors, (4560), 4560 states have call successors, (4560) [2024-11-24 00:29:40,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26368 states to 26368 states and 34228 transitions. [2024-11-24 00:29:40,746 INFO L78 Accepts]: Start accepts. Automaton has 26368 states and 34228 transitions. Word has length 168 [2024-11-24 00:29:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:29:40,746 INFO L471 AbstractCegarLoop]: Abstraction has 26368 states and 34228 transitions. [2024-11-24 00:29:40,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 11.619047619047619) internal successors, (244), 20 states have internal predecessors, (244), 8 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 9 states have call predecessors, (32), 8 states have call successors, (32) [2024-11-24 00:29:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26368 states and 34228 transitions. [2024-11-24 00:29:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 00:29:40,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:29:40,755 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2024-11-24 00:29:40,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 00:29:40,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 00:29:40,956 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:29:40,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:29:40,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1146944991, now seen corresponding path program 1 times [2024-11-24 00:29:40,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:29:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699409602] [2024-11-24 00:29:40,956 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:29:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:42,604 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 00:29:42,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:29:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699409602] [2024-11-24 00:29:42,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699409602] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:29:42,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315633176] [2024-11-24 00:29:42,604 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:29:42,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:29:42,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:29:42,606 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:29:42,607 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_52e9c028-d74a-4a22-bb08-15207352467e/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 00:29:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:29:42,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 00:29:42,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:29:43,020 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 50 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 00:29:43,020 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:29:43,135 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-24 00:29:43,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315633176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:29:43,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:29:43,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 16 [2024-11-24 00:29:43,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34189388] [2024-11-24 00:29:43,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:29:43,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-24 00:29:43,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:29:43,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-24 00:29:43,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2024-11-24 00:29:43,137 INFO L87 Difference]: Start difference. First operand 26368 states and 34228 transitions. Second operand has 16 states, 16 states have (on average 12.5) internal successors, (200), 15 states have internal predecessors, (200), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37)