./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/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 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 01:52:35,326 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 01:52:35,440 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 01:52:35,451 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 01:52:35,454 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 01:52:35,506 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 01:52:35,507 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 01:52:35,508 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 01:52:35,508 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 01:52:35,509 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 01:52:35,509 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 01:52:35,510 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 01:52:35,511 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 01:52:35,511 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 01:52:35,511 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 01:52:35,512 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 01:52:35,512 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 01:52:35,512 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 01:52:35,513 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 01:52:35,514 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 01:52:35,514 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 01:52:35,514 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 01:52:35,514 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 01:52:35,514 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:35,514 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:35,515 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:35,516 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:35,516 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 01:52:35,516 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 01:52:35,516 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 01:52:35,516 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:35,517 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 01:52:35,517 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 01:52:35,518 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 01:52:35,518 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 01:52:35,518 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 01:52:35,518 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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/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 -> 01a21536345230b7194ff5017879c469eb8be909ba72352bb81feb2f101a934f [2024-11-24 01:52:35,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 01:52:35,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 01:52:35,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 01:52:35,956 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 01:52:35,957 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 01:52:35,958 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-24 01:52:39,463 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/data/3ddd54d71/b68a9e07297740bfab468bb0062dd4cc/FLAGb58b37e9b [2024-11-24 01:52:39,865 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 01:52:39,866 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-24 01:52:39,884 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/data/3ddd54d71/b68a9e07297740bfab468bb0062dd4cc/FLAGb58b37e9b [2024-11-24 01:52:39,912 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/data/3ddd54d71/b68a9e07297740bfab468bb0062dd4cc [2024-11-24 01:52:39,915 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 01:52:39,918 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 01:52:39,920 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:39,921 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 01:52:39,932 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 01:52:39,933 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:39" (1/1) ... [2024-11-24 01:52:39,936 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ea965a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:39, skipping insertion in model container [2024-11-24 01:52:39,936 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:52:39" (1/1) ... [2024-11-24 01:52:39,989 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 01:52:40,311 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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2024-11-24 01:52:40,315 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:40,327 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 01:52:40,404 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_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c[14684,14697] [2024-11-24 01:52:40,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 01:52:40,424 INFO L204 MainTranslator]: Completed translation [2024-11-24 01:52:40,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40 WrapperNode [2024-11-24 01:52:40,425 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 01:52:40,426 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:40,426 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 01:52:40,426 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 01:52:40,435 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,527 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 506 [2024-11-24 01:52:40,527 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 01:52:40,531 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 01:52:40,531 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 01:52:40,532 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 01:52:40,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,542 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,579 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 01:52:40,579 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,580 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,604 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,606 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,623 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,642 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 01:52:40,643 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 01:52:40,643 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 01:52:40,644 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 01:52:40,651 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (1/1) ... [2024-11-24 01:52:40,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 01:52:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:40,700 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 01:52:40,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 01:52:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-24 01:52:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-24 01:52:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 01:52:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-24 01:52:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-24 01:52:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-24 01:52:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-24 01:52:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-24 01:52:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-24 01:52:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 01:52:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 01:52:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 01:52:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-24 01:52:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-24 01:52:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 01:52:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 01:52:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-24 01:52:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-24 01:52:40,885 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 01:52:40,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 01:52:41,830 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-24 01:52:41,830 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 01:52:41,854 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 01:52:41,858 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-24 01:52:41,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:41 BoogieIcfgContainer [2024-11-24 01:52:41,859 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 01:52:41,862 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 01:52:41,862 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 01:52:41,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 01:52:41,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:52:39" (1/3) ... [2024-11-24 01:52:41,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a3b429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:41, skipping insertion in model container [2024-11-24 01:52:41,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:52:40" (2/3) ... [2024-11-24 01:52:41,874 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a3b429 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:52:41, skipping insertion in model container [2024-11-24 01:52:41,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:52:41" (3/3) ... [2024-11-24 01:52:41,878 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c [2024-11-24 01:52:41,901 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 01:52:41,906 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.UNBOUNDED.pals.c that has 8 procedures, 180 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 01:52:42,013 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 01:52:42,035 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;@53023474, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 01:52:42,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 01:52:42,041 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 01:52:42,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 01:52:42,055 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:42,055 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 01:52:42,056 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:42,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:42,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1699901086, now seen corresponding path program 1 times [2024-11-24 01:52:42,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791618793] [2024-11-24 01:52:42,078 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:42,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:42,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:42,454 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 01:52:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791618793] [2024-11-24 01:52:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791618793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:42,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:42,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 01:52:42,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199801309] [2024-11-24 01:52:42,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:42,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 01:52:42,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:42,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 01:52:42,498 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 01:52:42,503 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 01:52:42,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:42,594 INFO L93 Difference]: Finished difference Result 340 states and 557 transitions. [2024-11-24 01:52:42,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 01:52:42,597 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 01:52:42,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:42,610 INFO L225 Difference]: With dead ends: 340 [2024-11-24 01:52:42,613 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 01:52:42,622 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 01:52:42,625 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 01:52:42,627 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 01:52:42,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 01:52:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 01:52:42,702 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 01:52:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 273 transitions. [2024-11-24 01:52:42,720 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 273 transitions. Word has length 28 [2024-11-24 01:52:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:42,720 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 273 transitions. [2024-11-24 01:52:42,721 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 01:52:42,721 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 273 transitions. [2024-11-24 01:52:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-24 01:52:42,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:42,725 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 01:52:42,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 01:52:42,726 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:42,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1918755804, now seen corresponding path program 1 times [2024-11-24 01:52:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16542278] [2024-11-24 01:52:42,728 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:43,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 01:52:43,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:43,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16542278] [2024-11-24 01:52:43,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16542278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:43,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:43,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 01:52:43,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808003039] [2024-11-24 01:52:43,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:43,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 01:52:43,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:43,367 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 01:52:43,367 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 01:52:43,368 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 01:52:43,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:43,533 INFO L93 Difference]: Finished difference Result 338 states and 520 transitions. [2024-11-24 01:52:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 01:52:43,534 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 01:52:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:43,536 INFO L225 Difference]: With dead ends: 338 [2024-11-24 01:52:43,536 INFO L226 Difference]: Without dead ends: 176 [2024-11-24 01:52:43,541 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 01:52:43,543 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 01:52:43,544 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 01:52:43,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-24 01:52:43,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-24 01:52:43,579 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 01:52:43,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 261 transitions. [2024-11-24 01:52:43,582 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 261 transitions. Word has length 28 [2024-11-24 01:52:43,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:43,583 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 261 transitions. [2024-11-24 01:52:43,583 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 01:52:43,583 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 261 transitions. [2024-11-24 01:52:43,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-24 01:52:43,592 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:43,592 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 01:52:43,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 01:52:43,593 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:43,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:43,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1355709569, now seen corresponding path program 1 times [2024-11-24 01:52:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290292585] [2024-11-24 01:52:43,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:44,057 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 01:52:44,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:44,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290292585] [2024-11-24 01:52:44,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290292585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:44,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:44,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:44,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647591822] [2024-11-24 01:52:44,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:44,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:44,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:44,059 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:44,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:44,059 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 01:52:44,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:44,152 INFO L93 Difference]: Finished difference Result 339 states and 512 transitions. [2024-11-24 01:52:44,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:44,153 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 01:52:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:44,156 INFO L225 Difference]: With dead ends: 339 [2024-11-24 01:52:44,156 INFO L226 Difference]: Without dead ends: 180 [2024-11-24 01:52:44,157 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 01:52:44,158 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:44,159 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 755 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:44,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2024-11-24 01:52:44,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2024-11-24 01:52:44,185 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 01:52:44,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 264 transitions. [2024-11-24 01:52:44,191 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 264 transitions. Word has length 39 [2024-11-24 01:52:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:44,191 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 264 transitions. [2024-11-24 01:52:44,191 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 01:52:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 264 transitions. [2024-11-24 01:52:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-24 01:52:44,194 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:44,195 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 01:52:44,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 01:52:44,196 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:44,197 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -2086587661, now seen corresponding path program 1 times [2024-11-24 01:52:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020943134] [2024-11-24 01:52:44,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:44,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:44,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:44,363 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 01:52:44,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:44,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020943134] [2024-11-24 01:52:44,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020943134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:44,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:44,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:44,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661040963] [2024-11-24 01:52:44,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:44,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:44,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:44,365 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:44,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:44,365 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 01:52:44,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:44,453 INFO L93 Difference]: Finished difference Result 494 states and 735 transitions. [2024-11-24 01:52:44,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:44,454 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 01:52:44,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:44,460 INFO L225 Difference]: With dead ends: 494 [2024-11-24 01:52:44,460 INFO L226 Difference]: Without dead ends: 331 [2024-11-24 01:52:44,461 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 01:52:44,462 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 01:52:44,462 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 01:52:44,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-24 01:52:44,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2024-11-24 01:52:44,541 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 01:52:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 484 transitions. [2024-11-24 01:52:44,550 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 484 transitions. Word has length 55 [2024-11-24 01:52:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:44,550 INFO L471 AbstractCegarLoop]: Abstraction has 326 states and 484 transitions. [2024-11-24 01:52:44,551 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 01:52:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 484 transitions. [2024-11-24 01:52:44,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:52:44,556 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:44,556 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 01:52:44,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 01:52:44,557 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:44,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:44,557 INFO L85 PathProgramCache]: Analyzing trace with hash 651939805, now seen corresponding path program 1 times [2024-11-24 01:52:44,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:44,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952772545] [2024-11-24 01:52:44,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:44,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:44,762 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 01:52:44,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:44,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952772545] [2024-11-24 01:52:44,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952772545] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:44,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:44,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:52:44,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438040171] [2024-11-24 01:52:44,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:44,764 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:52:44,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:44,764 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:52:44,764 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:52:44,765 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 01:52:44,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:44,891 INFO L93 Difference]: Finished difference Result 917 states and 1373 transitions. [2024-11-24 01:52:44,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:52:44,892 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 01:52:44,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:44,906 INFO L225 Difference]: With dead ends: 917 [2024-11-24 01:52:44,907 INFO L226 Difference]: Without dead ends: 608 [2024-11-24 01:52:44,908 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 01:52:44,909 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 01:52:44,910 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 01:52:44,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2024-11-24 01:52:45,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 602. [2024-11-24 01:52:45,012 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 01:52:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 901 transitions. [2024-11-24 01:52:45,024 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 901 transitions. Word has length 56 [2024-11-24 01:52:45,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:45,025 INFO L471 AbstractCegarLoop]: Abstraction has 602 states and 901 transitions. [2024-11-24 01:52:45,025 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 01:52:45,025 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 901 transitions. [2024-11-24 01:52:45,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 01:52:45,031 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:45,031 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 01:52:45,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 01:52:45,032 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:45,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:45,032 INFO L85 PathProgramCache]: Analyzing trace with hash -627923873, now seen corresponding path program 1 times [2024-11-24 01:52:45,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:45,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988316363] [2024-11-24 01:52:45,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:45,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:45,344 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 01:52:45,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:45,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988316363] [2024-11-24 01:52:45,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988316363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:45,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:45,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:45,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007498205] [2024-11-24 01:52:45,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:45,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:45,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:45,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:45,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:45,351 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 01:52:45,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:45,720 INFO L93 Difference]: Finished difference Result 1291 states and 1928 transitions. [2024-11-24 01:52:45,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:45,721 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 01:52:45,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:45,733 INFO L225 Difference]: With dead ends: 1291 [2024-11-24 01:52:45,733 INFO L226 Difference]: Without dead ends: 706 [2024-11-24 01:52:45,735 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 01:52:45,736 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 01:52:45,737 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 01:52:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2024-11-24 01:52:45,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2024-11-24 01:52:45,867 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 01:52:45,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1017 transitions. [2024-11-24 01:52:45,877 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1017 transitions. Word has length 56 [2024-11-24 01:52:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:45,879 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1017 transitions. [2024-11-24 01:52:45,879 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 01:52:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1017 transitions. [2024-11-24 01:52:45,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 01:52:45,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:45,883 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 01:52:45,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 01:52:45,884 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:45,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash 707313810, now seen corresponding path program 1 times [2024-11-24 01:52:45,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:45,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821956437] [2024-11-24 01:52:45,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:46,146 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 01:52:46,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:46,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821956437] [2024-11-24 01:52:46,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821956437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:46,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:46,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 01:52:46,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419481460] [2024-11-24 01:52:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:46,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:52:46,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:46,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:52:46,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 01:52:46,151 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 01:52:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:46,485 INFO L93 Difference]: Finished difference Result 1295 states and 1928 transitions. [2024-11-24 01:52:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:52:46,486 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 01:52:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:46,494 INFO L225 Difference]: With dead ends: 1295 [2024-11-24 01:52:46,494 INFO L226 Difference]: Without dead ends: 710 [2024-11-24 01:52:46,497 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 01:52:46,500 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 368 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 01:52:46,500 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 01:52:46,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2024-11-24 01:52:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 698. [2024-11-24 01:52:46,600 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 01:52:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1025 transitions. [2024-11-24 01:52:46,611 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1025 transitions. Word has length 57 [2024-11-24 01:52:46,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:46,611 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1025 transitions. [2024-11-24 01:52:46,612 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 01:52:46,612 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1025 transitions. [2024-11-24 01:52:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-24 01:52:46,615 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:46,615 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 01:52:46,615 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 01:52:46,615 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:46,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:46,616 INFO L85 PathProgramCache]: Analyzing trace with hash -1187610108, now seen corresponding path program 1 times [2024-11-24 01:52:46,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:46,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490630786] [2024-11-24 01:52:46,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:46,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:46,914 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 01:52:46,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:46,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490630786] [2024-11-24 01:52:46,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490630786] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:46,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:46,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:46,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278939690] [2024-11-24 01:52:46,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:46,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:46,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:46,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:46,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:46,918 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 01:52:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:47,202 INFO L93 Difference]: Finished difference Result 1283 states and 1908 transitions. [2024-11-24 01:52:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:47,202 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 01:52:47,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:47,208 INFO L225 Difference]: With dead ends: 1283 [2024-11-24 01:52:47,209 INFO L226 Difference]: Without dead ends: 698 [2024-11-24 01:52:47,211 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 01:52:47,212 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 61 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:47,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 663 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:52:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-24 01:52:47,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2024-11-24 01:52:47,287 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 01:52:47,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1021 transitions. [2024-11-24 01:52:47,295 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1021 transitions. Word has length 59 [2024-11-24 01:52:47,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:47,295 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1021 transitions. [2024-11-24 01:52:47,295 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 01:52:47,296 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1021 transitions. [2024-11-24 01:52:47,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 01:52:47,297 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:47,297 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 01:52:47,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 01:52:47,297 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:47,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:47,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1980797779, now seen corresponding path program 1 times [2024-11-24 01:52:47,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:47,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326717104] [2024-11-24 01:52:47,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:47,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:47,585 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 01:52:47,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:47,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326717104] [2024-11-24 01:52:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326717104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:47,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:47,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:47,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417758579] [2024-11-24 01:52:47,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:47,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:47,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:47,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:47,588 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 01:52:47,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:47,701 INFO L93 Difference]: Finished difference Result 1303 states and 1932 transitions. [2024-11-24 01:52:47,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:47,702 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 01:52:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:47,708 INFO L225 Difference]: With dead ends: 1303 [2024-11-24 01:52:47,709 INFO L226 Difference]: Without dead ends: 718 [2024-11-24 01:52:47,711 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 01:52:47,712 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 01:52:47,712 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 01:52:47,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-24 01:52:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 718. [2024-11-24 01:52:47,786 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 01:52:47,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1037 transitions. [2024-11-24 01:52:47,795 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1037 transitions. Word has length 60 [2024-11-24 01:52:47,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:47,796 INFO L471 AbstractCegarLoop]: Abstraction has 718 states and 1037 transitions. [2024-11-24 01:52:47,796 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 01:52:47,796 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1037 transitions. [2024-11-24 01:52:47,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-24 01:52:47,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:47,798 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 01:52:47,798 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 01:52:47,799 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:47,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1474712019, now seen corresponding path program 1 times [2024-11-24 01:52:47,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:47,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560861416] [2024-11-24 01:52:47,800 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:48,070 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 01:52:48,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:48,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560861416] [2024-11-24 01:52:48,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560861416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:48,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:48,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:48,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273308267] [2024-11-24 01:52:48,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:48,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:48,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:48,073 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:48,073 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:48,073 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 01:52:48,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:48,215 INFO L93 Difference]: Finished difference Result 1343 states and 1976 transitions. [2024-11-24 01:52:48,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:48,216 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 01:52:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:48,223 INFO L225 Difference]: With dead ends: 1343 [2024-11-24 01:52:48,223 INFO L226 Difference]: Without dead ends: 738 [2024-11-24 01:52:48,225 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 01:52:48,226 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 01:52:48,227 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 01:52:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-11-24 01:52:48,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 738. [2024-11-24 01:52:48,305 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 01:52:48,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 1053 transitions. [2024-11-24 01:52:48,313 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 1053 transitions. Word has length 68 [2024-11-24 01:52:48,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:48,314 INFO L471 AbstractCegarLoop]: Abstraction has 738 states and 1053 transitions. [2024-11-24 01:52:48,314 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 01:52:48,314 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 1053 transitions. [2024-11-24 01:52:48,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:52:48,316 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:48,316 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 01:52:48,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 01:52:48,317 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:48,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:48,317 INFO L85 PathProgramCache]: Analyzing trace with hash -799213667, now seen corresponding path program 1 times [2024-11-24 01:52:48,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:48,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210144434] [2024-11-24 01:52:48,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:48,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:48,617 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 01:52:48,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:48,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210144434] [2024-11-24 01:52:48,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210144434] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:48,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:48,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:48,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960820397] [2024-11-24 01:52:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:48,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:48,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:48,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:48,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:48,621 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 01:52:48,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:48,759 INFO L93 Difference]: Finished difference Result 1379 states and 1992 transitions. [2024-11-24 01:52:48,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:48,760 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 01:52:48,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:48,769 INFO L225 Difference]: With dead ends: 1379 [2024-11-24 01:52:48,769 INFO L226 Difference]: Without dead ends: 754 [2024-11-24 01:52:48,772 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 01:52:48,773 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 01:52:48,773 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 01:52:48,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-24 01:52:48,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-24 01:52:48,862 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 01:52:48,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1065 transitions. [2024-11-24 01:52:48,871 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1065 transitions. Word has length 76 [2024-11-24 01:52:48,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:48,871 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1065 transitions. [2024-11-24 01:52:48,871 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 01:52:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1065 transitions. [2024-11-24 01:52:48,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-24 01:52:48,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:48,874 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 01:52:48,874 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 01:52:48,874 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:48,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:48,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1597245636, now seen corresponding path program 1 times [2024-11-24 01:52:48,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:48,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376509233] [2024-11-24 01:52:48,875 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:48,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:49,133 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 01:52:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376509233] [2024-11-24 01:52:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376509233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:49,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:49,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:49,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191031279] [2024-11-24 01:52:49,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:49,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:49,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:49,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:49,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:49,136 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 01:52:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:49,291 INFO L93 Difference]: Finished difference Result 1415 states and 2032 transitions. [2024-11-24 01:52:49,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:49,292 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 01:52:49,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:49,301 INFO L225 Difference]: With dead ends: 1415 [2024-11-24 01:52:49,301 INFO L226 Difference]: Without dead ends: 774 [2024-11-24 01:52:49,304 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 01:52:49,305 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:49,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 753 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:52:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2024-11-24 01:52:49,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 774. [2024-11-24 01:52:49,398 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 01:52:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1081 transitions. [2024-11-24 01:52:49,408 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1081 transitions. Word has length 76 [2024-11-24 01:52:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:49,408 INFO L471 AbstractCegarLoop]: Abstraction has 774 states and 1081 transitions. [2024-11-24 01:52:49,408 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 01:52:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1081 transitions. [2024-11-24 01:52:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-24 01:52:49,412 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:49,412 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 01:52:49,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 01:52:49,413 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:49,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:49,413 INFO L85 PathProgramCache]: Analyzing trace with hash 837268772, now seen corresponding path program 1 times [2024-11-24 01:52:49,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:49,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849553810] [2024-11-24 01:52:49,414 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:49,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:49,765 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 01:52:49,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:49,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849553810] [2024-11-24 01:52:49,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849553810] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:49,765 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:49,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:49,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436104710] [2024-11-24 01:52:49,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:49,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:49,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:49,767 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:49,767 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:49,767 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 01:52:49,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:49,890 INFO L93 Difference]: Finished difference Result 1459 states and 2060 transitions. [2024-11-24 01:52:49,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:49,891 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 01:52:49,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:49,898 INFO L225 Difference]: With dead ends: 1459 [2024-11-24 01:52:49,898 INFO L226 Difference]: Without dead ends: 798 [2024-11-24 01:52:49,900 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 01:52:49,901 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 01:52:49,902 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 01:52:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2024-11-24 01:52:49,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 798. [2024-11-24 01:52:49,975 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 01:52:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1101 transitions. [2024-11-24 01:52:49,984 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1101 transitions. Word has length 84 [2024-11-24 01:52:49,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:49,985 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1101 transitions. [2024-11-24 01:52:49,985 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 01:52:49,985 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1101 transitions. [2024-11-24 01:52:49,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-24 01:52:49,988 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:49,988 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 01:52:49,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 01:52:49,989 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:49,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:49,989 INFO L85 PathProgramCache]: Analyzing trace with hash 1610117125, now seen corresponding path program 1 times [2024-11-24 01:52:49,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:49,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372460264] [2024-11-24 01:52:49,990 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:49,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:50,930 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 01:52:50,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:50,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372460264] [2024-11-24 01:52:50,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372460264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:50,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:50,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:52:50,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772708512] [2024-11-24 01:52:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:50,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:52:50,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:50,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:52:50,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:50,933 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 01:52:51,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:51,471 INFO L93 Difference]: Finished difference Result 2053 states and 2823 transitions. [2024-11-24 01:52:51,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:52:51,472 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 01:52:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:51,485 INFO L225 Difference]: With dead ends: 2053 [2024-11-24 01:52:51,485 INFO L226 Difference]: Without dead ends: 1368 [2024-11-24 01:52:51,488 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:52:51,488 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, 0.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:51,489 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1476 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-24 01:52:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1368 states. [2024-11-24 01:52:51,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1368 to 1082. [2024-11-24 01:52:51,652 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 01:52:51,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1479 transitions. [2024-11-24 01:52:51,662 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1479 transitions. Word has length 87 [2024-11-24 01:52:51,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:51,662 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1479 transitions. [2024-11-24 01:52:51,662 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 01:52:51,663 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1479 transitions. [2024-11-24 01:52:51,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 01:52:51,664 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:51,665 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 01:52:51,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 01:52:51,665 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:51,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:51,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1820782171, now seen corresponding path program 1 times [2024-11-24 01:52:51,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:51,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990385843] [2024-11-24 01:52:51,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:51,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:51,906 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 01:52:51,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:51,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990385843] [2024-11-24 01:52:51,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990385843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:51,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:51,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:52:51,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232269235] [2024-11-24 01:52:51,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:51,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:52:51,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:51,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:52:51,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:52:51,909 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 01:52:52,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:52,069 INFO L93 Difference]: Finished difference Result 2007 states and 2768 transitions. [2024-11-24 01:52:52,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:52:52,071 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 01:52:52,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:52,080 INFO L225 Difference]: With dead ends: 2007 [2024-11-24 01:52:52,080 INFO L226 Difference]: Without dead ends: 1106 [2024-11-24 01:52:52,085 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 01:52:52,086 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 01:52:52,089 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 01:52:52,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2024-11-24 01:52:52,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 1106. [2024-11-24 01:52:52,237 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 01:52:52,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1497 transitions. [2024-11-24 01:52:52,247 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1497 transitions. Word has length 91 [2024-11-24 01:52:52,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:52,248 INFO L471 AbstractCegarLoop]: Abstraction has 1106 states and 1497 transitions. [2024-11-24 01:52:52,248 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 01:52:52,248 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1497 transitions. [2024-11-24 01:52:52,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-24 01:52:52,251 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:52,251 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 01:52:52,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 01:52:52,251 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:52,252 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1723609181, now seen corresponding path program 1 times [2024-11-24 01:52:52,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:52,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191911405] [2024-11-24 01:52:52,252 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:52,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:52,832 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 01:52:52,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:52,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191911405] [2024-11-24 01:52:52,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191911405] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:52:52,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966707300] [2024-11-24 01:52:52,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:52,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:52:52,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:52:52,840 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:52:52,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 01:52:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:53,131 INFO L256 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 01:52:53,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:52:53,353 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 01:52:53,354 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 01:52:53,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966707300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:53,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 01:52:53,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-24 01:52:53,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510350108] [2024-11-24 01:52:53,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:53,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 01:52:53,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:53,356 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 01:52:53,356 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:52:53,356 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 01:52:53,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:53,798 INFO L93 Difference]: Finished difference Result 2371 states and 3335 transitions. [2024-11-24 01:52:53,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 01:52:53,798 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 01:52:53,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:53,810 INFO L225 Difference]: With dead ends: 2371 [2024-11-24 01:52:53,811 INFO L226 Difference]: Without dead ends: 1534 [2024-11-24 01:52:53,814 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 01:52:53,816 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:53,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 2866 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:52:53,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1534 states. [2024-11-24 01:52:53,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1534 to 1114. [2024-11-24 01:52:53,975 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 01:52:53,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1499 transitions. [2024-11-24 01:52:53,986 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1499 transitions. Word has length 90 [2024-11-24 01:52:53,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:53,987 INFO L471 AbstractCegarLoop]: Abstraction has 1114 states and 1499 transitions. [2024-11-24 01:52:53,987 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 01:52:53,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1499 transitions. [2024-11-24 01:52:53,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-24 01:52:53,991 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:53,992 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 01:52:54,005 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 01:52:54,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 01:52:54,193 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:54,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:54,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2094931668, now seen corresponding path program 1 times [2024-11-24 01:52:54,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:54,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298958084] [2024-11-24 01:52:54,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:54,466 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 01:52:54,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:54,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298958084] [2024-11-24 01:52:54,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298958084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:54,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:54,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:52:54,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303760965] [2024-11-24 01:52:54,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:54,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:52:54,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:54,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:52:54,468 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:54,469 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 01:52:54,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:54,827 INFO L93 Difference]: Finished difference Result 2010 states and 2716 transitions. [2024-11-24 01:52:54,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:52:54,827 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 01:52:54,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:54,838 INFO L225 Difference]: With dead ends: 2010 [2024-11-24 01:52:54,838 INFO L226 Difference]: Without dead ends: 1159 [2024-11-24 01:52:54,841 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 01:52:54,842 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, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:54,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 1485 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:52:54,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-24 01:52:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1117. [2024-11-24 01:52:54,976 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 01:52:54,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1117 states to 1117 states and 1488 transitions. [2024-11-24 01:52:54,990 INFO L78 Accepts]: Start accepts. Automaton has 1117 states and 1488 transitions. Word has length 93 [2024-11-24 01:52:54,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:54,990 INFO L471 AbstractCegarLoop]: Abstraction has 1117 states and 1488 transitions. [2024-11-24 01:52:54,993 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 01:52:54,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1117 states and 1488 transitions. [2024-11-24 01:52:54,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-24 01:52:54,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:54,995 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 01:52:54,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 01:52:54,996 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:54,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1811425973, now seen corresponding path program 1 times [2024-11-24 01:52:54,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:54,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893165057] [2024-11-24 01:52:54,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:54,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:55,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:55,947 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 01:52:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893165057] [2024-11-24 01:52:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893165057] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:55,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:55,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:52:55,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283384224] [2024-11-24 01:52:55,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:55,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:52:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:55,950 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:52:55,950 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:55,951 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 01:52:56,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:56,352 INFO L93 Difference]: Finished difference Result 1989 states and 2661 transitions. [2024-11-24 01:52:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:52:56,353 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 01:52:56,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:56,361 INFO L225 Difference]: With dead ends: 1989 [2024-11-24 01:52:56,362 INFO L226 Difference]: Without dead ends: 1115 [2024-11-24 01:52:56,364 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:52:56,365 INFO L435 NwaCegarLoop]: 288 mSDtfsCounter, 150 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 01:52:56,366 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 01:52:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2024-11-24 01:52:56,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1008. [2024-11-24 01:52:56,474 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 01:52:56,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1345 transitions. [2024-11-24 01:52:56,483 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1345 transitions. Word has length 95 [2024-11-24 01:52:56,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:56,483 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1345 transitions. [2024-11-24 01:52:56,484 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 01:52:56,484 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1345 transitions. [2024-11-24 01:52:56,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 01:52:56,485 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:56,485 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 01:52:56,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 01:52:56,486 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:56,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:56,486 INFO L85 PathProgramCache]: Analyzing trace with hash -375753860, now seen corresponding path program 1 times [2024-11-24 01:52:56,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:56,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060174187] [2024-11-24 01:52:56,487 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:56,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:56,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:57,384 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 01:52:57,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:57,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060174187] [2024-11-24 01:52:57,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060174187] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:57,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:57,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:52:57,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146749330] [2024-11-24 01:52:57,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:57,385 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:52:57,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:57,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:52:57,386 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:57,387 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 01:52:58,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:58,149 INFO L93 Difference]: Finished difference Result 1934 states and 2578 transitions. [2024-11-24 01:52:58,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:52:58,150 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 01:52:58,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:58,158 INFO L225 Difference]: With dead ends: 1934 [2024-11-24 01:52:58,159 INFO L226 Difference]: Without dead ends: 1099 [2024-11-24 01:52:58,161 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:52:58,162 INFO L435 NwaCegarLoop]: 321 mSDtfsCounter, 418 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:58,162 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1472 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:52:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2024-11-24 01:52:58,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 1046. [2024-11-24 01:52:58,305 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 01:52:58,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1377 transitions. [2024-11-24 01:52:58,315 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1377 transitions. Word has length 96 [2024-11-24 01:52:58,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:52:58,316 INFO L471 AbstractCegarLoop]: Abstraction has 1046 states and 1377 transitions. [2024-11-24 01:52:58,316 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 01:52:58,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1377 transitions. [2024-11-24 01:52:58,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 01:52:58,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:52:58,319 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 01:52:58,319 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 01:52:58,319 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:52:58,320 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:52:58,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1605607307, now seen corresponding path program 1 times [2024-11-24 01:52:58,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:52:58,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137587899] [2024-11-24 01:52:58,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:52:58,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:52:58,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:52:59,112 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 01:52:59,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:52:59,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137587899] [2024-11-24 01:52:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137587899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:52:59,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:52:59,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:52:59,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414725391] [2024-11-24 01:52:59,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:52:59,114 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:52:59,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:52:59,115 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:52:59,115 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:52:59,115 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 01:52:59,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:52:59,968 INFO L93 Difference]: Finished difference Result 2019 states and 2644 transitions. [2024-11-24 01:52:59,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 01:52:59,969 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 01:52:59,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:52:59,979 INFO L225 Difference]: With dead ends: 2019 [2024-11-24 01:52:59,979 INFO L226 Difference]: Without dead ends: 1159 [2024-11-24 01:52:59,983 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:52:59,984 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 407 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s 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, 0.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:52:59,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1262 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-24 01:52:59,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1159 states. [2024-11-24 01:53:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1159 to 1068. [2024-11-24 01:53:00,178 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 01:53:00,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1389 transitions. [2024-11-24 01:53:00,188 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1389 transitions. Word has length 98 [2024-11-24 01:53:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:00,189 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1389 transitions. [2024-11-24 01:53:00,189 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 01:53:00,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1389 transitions. [2024-11-24 01:53:00,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-24 01:53:00,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:00,192 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 01:53:00,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 01:53:00,193 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:00,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1784538508, now seen corresponding path program 1 times [2024-11-24 01:53:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:00,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311086474] [2024-11-24 01:53:00,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:00,342 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 01:53:00,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:00,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311086474] [2024-11-24 01:53:00,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311086474] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:00,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:00,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575959348] [2024-11-24 01:53:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:00,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:00,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:00,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:00,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:00,346 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 01:53:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:00,769 INFO L93 Difference]: Finished difference Result 2778 states and 3641 transitions. [2024-11-24 01:53:00,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:00,770 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 01:53:00,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:00,785 INFO L225 Difference]: With dead ends: 2778 [2024-11-24 01:53:00,785 INFO L226 Difference]: Without dead ends: 1974 [2024-11-24 01:53:00,789 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 01:53:00,791 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 01:53:00,791 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 01:53:00,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1974 states. [2024-11-24 01:53:01,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1974 to 1793. [2024-11-24 01:53:01,109 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 01:53:01,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1793 states to 1793 states and 2342 transitions. [2024-11-24 01:53:01,123 INFO L78 Accepts]: Start accepts. Automaton has 1793 states and 2342 transitions. Word has length 99 [2024-11-24 01:53:01,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:01,123 INFO L471 AbstractCegarLoop]: Abstraction has 1793 states and 2342 transitions. [2024-11-24 01:53:01,124 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 01:53:01,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1793 states and 2342 transitions. [2024-11-24 01:53:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:53:01,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:01,127 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 01:53:01,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 01:53:01,128 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:01,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:01,128 INFO L85 PathProgramCache]: Analyzing trace with hash -599061911, now seen corresponding path program 1 times [2024-11-24 01:53:01,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:01,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876366417] [2024-11-24 01:53:01,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:01,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:01,276 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 01:53:01,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:01,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876366417] [2024-11-24 01:53:01,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876366417] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:01,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:01,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:01,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882408311] [2024-11-24 01:53:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:01,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:01,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:01,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:01,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:01,281 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 01:53:01,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:01,893 INFO L93 Difference]: Finished difference Result 4547 states and 5974 transitions. [2024-11-24 01:53:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:01,897 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 01:53:01,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:01,926 INFO L225 Difference]: With dead ends: 4547 [2024-11-24 01:53:01,926 INFO L226 Difference]: Without dead ends: 3091 [2024-11-24 01:53:01,934 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 01:53:01,937 INFO L435 NwaCegarLoop]: 476 mSDtfsCounter, 207 mSDsluCounter, 713 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 01:53:01,938 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 01:53:01,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3091 states. [2024-11-24 01:53:02,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3091 to 2814. [2024-11-24 01:53:02,525 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 01:53:02,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2814 states to 2814 states and 3663 transitions. [2024-11-24 01:53:02,555 INFO L78 Accepts]: Start accepts. Automaton has 2814 states and 3663 transitions. Word has length 101 [2024-11-24 01:53:02,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:02,555 INFO L471 AbstractCegarLoop]: Abstraction has 2814 states and 3663 transitions. [2024-11-24 01:53:02,556 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 01:53:02,556 INFO L276 IsEmpty]: Start isEmpty. Operand 2814 states and 3663 transitions. [2024-11-24 01:53:02,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-24 01:53:02,560 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:02,560 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 01:53:02,561 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 01:53:02,561 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:02,561 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:02,562 INFO L85 PathProgramCache]: Analyzing trace with hash 647926777, now seen corresponding path program 1 times [2024-11-24 01:53:02,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:02,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686433647] [2024-11-24 01:53:02,562 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:02,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:02,706 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 01:53:02,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:02,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686433647] [2024-11-24 01:53:02,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686433647] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:02,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:02,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:02,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278277159] [2024-11-24 01:53:02,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:02,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:02,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:02,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:02,709 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:02,709 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 01:53:03,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:03,479 INFO L93 Difference]: Finished difference Result 6570 states and 8593 transitions. [2024-11-24 01:53:03,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:03,484 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 01:53:03,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:03,522 INFO L225 Difference]: With dead ends: 6570 [2024-11-24 01:53:03,523 INFO L226 Difference]: Without dead ends: 4213 [2024-11-24 01:53:03,530 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 01:53:03,531 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 01:53:03,531 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 01:53:03,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4213 states. [2024-11-24 01:53:04,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4213 to 4030. [2024-11-24 01:53:04,224 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 01:53:04,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4030 states to 4030 states and 5240 transitions. [2024-11-24 01:53:04,254 INFO L78 Accepts]: Start accepts. Automaton has 4030 states and 5240 transitions. Word has length 101 [2024-11-24 01:53:04,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:04,254 INFO L471 AbstractCegarLoop]: Abstraction has 4030 states and 5240 transitions. [2024-11-24 01:53:04,256 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 01:53:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 4030 states and 5240 transitions. [2024-11-24 01:53:04,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 01:53:04,260 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:04,261 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 01:53:04,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 01:53:04,261 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:04,262 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:04,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1760044486, now seen corresponding path program 1 times [2024-11-24 01:53:04,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:04,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313001721] [2024-11-24 01:53:04,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:04,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:04,343 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 01:53:04,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:04,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313001721] [2024-11-24 01:53:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313001721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:04,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:53:04,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91392035] [2024-11-24 01:53:04,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:04,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:53:04,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:04,346 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:53:04,346 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:04,346 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 01:53:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:05,226 INFO L93 Difference]: Finished difference Result 7739 states and 10111 transitions. [2024-11-24 01:53:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:53:05,227 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 01:53:05,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:05,263 INFO L225 Difference]: With dead ends: 7739 [2024-11-24 01:53:05,263 INFO L226 Difference]: Without dead ends: 4063 [2024-11-24 01:53:05,278 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 01:53:05,279 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 01:53:05,279 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 01:53:05,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4063 states. [2024-11-24 01:53:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4063 to 4036. [2024-11-24 01:53:06,030 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 01:53:06,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4036 states to 4036 states and 5246 transitions. [2024-11-24 01:53:06,053 INFO L78 Accepts]: Start accepts. Automaton has 4036 states and 5246 transitions. Word has length 102 [2024-11-24 01:53:06,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:06,053 INFO L471 AbstractCegarLoop]: Abstraction has 4036 states and 5246 transitions. [2024-11-24 01:53:06,054 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 01:53:06,054 INFO L276 IsEmpty]: Start isEmpty. Operand 4036 states and 5246 transitions. [2024-11-24 01:53:06,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 01:53:06,057 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:06,057 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 01:53:06,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 01:53:06,058 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:06,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:06,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1930890164, now seen corresponding path program 1 times [2024-11-24 01:53:06,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398458203] [2024-11-24 01:53:06,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:06,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:06,268 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 01:53:06,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:06,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398458203] [2024-11-24 01:53:06,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398458203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:06,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:06,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:06,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58974623] [2024-11-24 01:53:06,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:06,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:06,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:06,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:06,272 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:06,272 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 01:53:06,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:06,783 INFO L93 Difference]: Finished difference Result 7704 states and 10038 transitions. [2024-11-24 01:53:06,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:06,784 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 01:53:06,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:06,829 INFO L225 Difference]: With dead ends: 7704 [2024-11-24 01:53:06,829 INFO L226 Difference]: Without dead ends: 3744 [2024-11-24 01:53:06,844 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 01:53:06,845 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 01:53:06,846 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 01:53:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3744 states. [2024-11-24 01:53:07,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3744 to 3681. [2024-11-24 01:53:07,398 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 01:53:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 4814 transitions. [2024-11-24 01:53:07,424 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 4814 transitions. Word has length 103 [2024-11-24 01:53:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:07,425 INFO L471 AbstractCegarLoop]: Abstraction has 3681 states and 4814 transitions. [2024-11-24 01:53:07,425 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 01:53:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 4814 transitions. [2024-11-24 01:53:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:53:07,428 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:07,428 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 01:53:07,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 01:53:07,428 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:07,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:07,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1500264054, now seen corresponding path program 1 times [2024-11-24 01:53:07,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:07,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285100038] [2024-11-24 01:53:07,430 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:07,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:07,529 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 01:53:07,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:07,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285100038] [2024-11-24 01:53:07,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285100038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:07,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:07,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 01:53:07,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636722307] [2024-11-24 01:53:07,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:07,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 01:53:07,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:07,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 01:53:07,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 01:53:07,533 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 01:53:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:08,085 INFO L93 Difference]: Finished difference Result 7191 states and 9437 transitions. [2024-11-24 01:53:08,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 01:53:08,086 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 01:53:08,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:08,124 INFO L225 Difference]: With dead ends: 7191 [2024-11-24 01:53:08,124 INFO L226 Difference]: Without dead ends: 3691 [2024-11-24 01:53:08,135 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 01:53:08,136 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:08,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 485 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 01:53:08,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3691 states. [2024-11-24 01:53:08,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3691 to 3691. [2024-11-24 01:53:08,651 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 01:53:08,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4824 transitions. [2024-11-24 01:53:08,677 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4824 transitions. Word has length 104 [2024-11-24 01:53:08,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:08,678 INFO L471 AbstractCegarLoop]: Abstraction has 3691 states and 4824 transitions. [2024-11-24 01:53:08,678 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 01:53:08,678 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4824 transitions. [2024-11-24 01:53:08,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 01:53:08,680 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:08,681 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 01:53:08,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 01:53:08,681 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:08,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:08,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1445902481, now seen corresponding path program 1 times [2024-11-24 01:53:08,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:08,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201262305] [2024-11-24 01:53:08,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:08,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:08,957 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 01:53:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201262305] [2024-11-24 01:53:08,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201262305] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:08,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:08,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 01:53:08,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440497574] [2024-11-24 01:53:08,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:08,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 01:53:08,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:08,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 01:53:08,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 01:53:08,961 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 01:53:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:09,728 INFO L93 Difference]: Finished difference Result 7183 states and 9409 transitions. [2024-11-24 01:53:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 01:53:09,729 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 01:53:09,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:09,761 INFO L225 Difference]: With dead ends: 7183 [2024-11-24 01:53:09,761 INFO L226 Difference]: Without dead ends: 3611 [2024-11-24 01:53:09,775 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 01:53:09,776 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 01:53:09,776 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 01:53:09,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3611 states. [2024-11-24 01:53:10,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3611 to 2783. [2024-11-24 01:53:10,299 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 01:53:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 3628 transitions. [2024-11-24 01:53:10,317 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 3628 transitions. Word has length 104 [2024-11-24 01:53:10,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:10,318 INFO L471 AbstractCegarLoop]: Abstraction has 2783 states and 3628 transitions. [2024-11-24 01:53:10,318 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 01:53:10,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 3628 transitions. [2024-11-24 01:53:10,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-24 01:53:10,324 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:10,324 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 01:53:10,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 01:53:10,324 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:10,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:10,325 INFO L85 PathProgramCache]: Analyzing trace with hash 486642331, now seen corresponding path program 1 times [2024-11-24 01:53:10,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:10,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373491023] [2024-11-24 01:53:10,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:10,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:11,497 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 01:53:11,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373491023] [2024-11-24 01:53:11,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373491023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487571293] [2024-11-24 01:53:11,498 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:11,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:11,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:11,502 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:11,503 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 01:53:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:11,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 01:53:11,832 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:12,139 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 01:53:12,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:12,616 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 01:53:12,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487571293] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:12,617 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:12,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 9] total 20 [2024-11-24 01:53:12,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447417859] [2024-11-24 01:53:12,617 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:12,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:53:12,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:12,619 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:53:12,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:53:12,620 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 01:53:17,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:17,212 INFO L93 Difference]: Finished difference Result 9288 states and 12094 transitions. [2024-11-24 01:53:17,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-24 01:53:17,213 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 01:53:17,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:17,256 INFO L225 Difference]: With dead ends: 9288 [2024-11-24 01:53:17,256 INFO L226 Difference]: Without dead ends: 6696 [2024-11-24 01:53:17,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1303 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=620, Invalid=4072, Unknown=0, NotChecked=0, Total=4692 [2024-11-24 01:53:17,269 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 1922 mSDsluCounter, 4218 mSDsCounter, 0 mSdLazyCounter, 784 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1937 SdHoareTripleChecker+Valid, 4618 SdHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:17,269 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1937 Valid, 4618 Invalid, 1470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 784 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-24 01:53:17,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6696 states. [2024-11-24 01:53:18,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6696 to 5643. [2024-11-24 01:53:18,200 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 01:53:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5643 states to 5643 states and 7358 transitions. [2024-11-24 01:53:18,229 INFO L78 Accepts]: Start accepts. Automaton has 5643 states and 7358 transitions. Word has length 153 [2024-11-24 01:53:18,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:18,229 INFO L471 AbstractCegarLoop]: Abstraction has 5643 states and 7358 transitions. [2024-11-24 01:53:18,230 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 01:53:18,230 INFO L276 IsEmpty]: Start isEmpty. Operand 5643 states and 7358 transitions. [2024-11-24 01:53:18,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-24 01:53:18,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:18,240 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 01:53:18,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-24 01:53:18,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-24 01:53:18,445 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:18,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -950230078, now seen corresponding path program 1 times [2024-11-24 01:53:18,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:18,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122669908] [2024-11-24 01:53:18,448 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:18,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:18,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:19,452 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 01:53:19,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122669908] [2024-11-24 01:53:19,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122669908] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:19,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141872419] [2024-11-24 01:53:19,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:19,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:19,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:19,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:19,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 01:53:19,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:19,854 INFO L256 TraceCheckSpWp]: Trace formula consists of 748 conjuncts, 37 conjuncts are in the unsatisfiable core [2024-11-24 01:53:19,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:20,552 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 01:53:20,553 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:20,695 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 01:53:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141872419] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:20,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-24 01:53:20,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 17] total 24 [2024-11-24 01:53:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688763454] [2024-11-24 01:53:20,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:20,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 01:53:20,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:20,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 01:53:20,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:53:20,698 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 01:53:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:21,298 INFO L93 Difference]: Finished difference Result 9923 states and 12992 transitions. [2024-11-24 01:53:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 01:53:21,299 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 01:53:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:21,329 INFO L225 Difference]: With dead ends: 9923 [2024-11-24 01:53:21,330 INFO L226 Difference]: Without dead ends: 4448 [2024-11-24 01:53:21,343 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=483, Unknown=0, NotChecked=0, Total=552 [2024-11-24 01:53:21,343 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 0 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:21,344 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 767 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 01:53:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4448 states. [2024-11-24 01:53:22,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4448 to 4448. [2024-11-24 01:53:22,199 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 01:53:22,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4448 states to 4448 states and 5798 transitions. [2024-11-24 01:53:22,230 INFO L78 Accepts]: Start accepts. Automaton has 4448 states and 5798 transitions. Word has length 155 [2024-11-24 01:53:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:22,231 INFO L471 AbstractCegarLoop]: Abstraction has 4448 states and 5798 transitions. [2024-11-24 01:53:22,231 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 01:53:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 4448 states and 5798 transitions. [2024-11-24 01:53:22,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 01:53:22,243 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:22,244 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 01:53:22,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 01:53:22,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 01:53:22,445 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:22,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:22,445 INFO L85 PathProgramCache]: Analyzing trace with hash -896873483, now seen corresponding path program 1 times [2024-11-24 01:53:22,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:22,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028107680] [2024-11-24 01:53:22,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:22,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:24,049 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 01:53:24,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028107680] [2024-11-24 01:53:24,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028107680] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:24,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232138376] [2024-11-24 01:53:24,050 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:24,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:24,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:24,053 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:24,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 01:53:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:24,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 765 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 01:53:24,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:25,366 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 01:53:25,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:26,513 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 01:53:26,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232138376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:26,514 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:26,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-11-24 01:53:26,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805583519] [2024-11-24 01:53:26,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:26,515 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 01:53:26,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:26,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 01:53:26,516 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-24 01:53:26,517 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 01:53:33,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:33,944 INFO L93 Difference]: Finished difference Result 10824 states and 14092 transitions. [2024-11-24 01:53:33,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2024-11-24 01:53:33,945 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 01:53:33,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:33,988 INFO L225 Difference]: With dead ends: 10824 [2024-11-24 01:53:33,988 INFO L226 Difference]: Without dead ends: 6629 [2024-11-24 01:53:34,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 318 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2628 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1609, Invalid=6581, Unknown=0, NotChecked=0, Total=8190 [2024-11-24 01:53:34,003 INFO L435 NwaCegarLoop]: 325 mSDtfsCounter, 3302 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 1679 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 3704 SdHoareTripleChecker+Invalid, 2802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 1679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:34,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3302 Valid, 3704 Invalid, 2802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 1679 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:53:34,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6629 states. [2024-11-24 01:53:35,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6629 to 6232. [2024-11-24 01:53:35,303 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 01:53:35,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6232 states to 6232 states and 8069 transitions. [2024-11-24 01:53:35,336 INFO L78 Accepts]: Start accepts. Automaton has 6232 states and 8069 transitions. Word has length 156 [2024-11-24 01:53:35,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:35,337 INFO L471 AbstractCegarLoop]: Abstraction has 6232 states and 8069 transitions. [2024-11-24 01:53:35,337 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 01:53:35,338 INFO L276 IsEmpty]: Start isEmpty. Operand 6232 states and 8069 transitions. [2024-11-24 01:53:35,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 01:53:35,350 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:35,350 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 01:53:35,364 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 01:53:35,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:35,555 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:35,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1833817774, now seen corresponding path program 1 times [2024-11-24 01:53:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:35,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42483916] [2024-11-24 01:53:35,556 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:35,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:35,879 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 01:53:35,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:35,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42483916] [2024-11-24 01:53:35,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42483916] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 01:53:35,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 01:53:35,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 01:53:35,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856988781] [2024-11-24 01:53:35,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 01:53:35,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 01:53:35,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:35,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 01:53:35,881 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 01:53:35,881 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 01:53:38,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:38,351 INFO L93 Difference]: Finished difference Result 18294 states and 23745 transitions. [2024-11-24 01:53:38,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:53:38,352 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 01:53:38,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:38,419 INFO L225 Difference]: With dead ends: 18294 [2024-11-24 01:53:38,419 INFO L226 Difference]: Without dead ends: 12367 [2024-11-24 01:53:38,434 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 01:53:38,435 INFO L435 NwaCegarLoop]: 484 mSDtfsCounter, 223 mSDsluCounter, 2084 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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 01:53:38,435 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 01:53:38,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12367 states. [2024-11-24 01:53:40,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12367 to 8853. [2024-11-24 01:53:40,560 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 01:53:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8853 states to 8853 states and 11481 transitions. [2024-11-24 01:53:40,619 INFO L78 Accepts]: Start accepts. Automaton has 8853 states and 11481 transitions. Word has length 158 [2024-11-24 01:53:40,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:40,620 INFO L471 AbstractCegarLoop]: Abstraction has 8853 states and 11481 transitions. [2024-11-24 01:53:40,620 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 01:53:40,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8853 states and 11481 transitions. [2024-11-24 01:53:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 01:53:40,642 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:40,642 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 01:53:40,643 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:53:40,643 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:40,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:40,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1397411830, now seen corresponding path program 1 times [2024-11-24 01:53:40,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:40,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7350631] [2024-11-24 01:53:40,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:40,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:42,728 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 01:53:42,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7350631] [2024-11-24 01:53:42,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7350631] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:42,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872293993] [2024-11-24 01:53:42,729 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:42,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:42,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:42,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:53:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:43,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 782 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:53:43,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:43,963 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 01:53:43,963 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:47,886 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 01:53:47,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872293993] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:47,886 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:47,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 10] total 29 [2024-11-24 01:53:47,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365633134] [2024-11-24 01:53:47,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:47,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-24 01:53:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:47,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-24 01:53:47,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=688, Unknown=0, NotChecked=0, Total=812 [2024-11-24 01:53:47,890 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 01:53:53,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:53:53,712 INFO L93 Difference]: Finished difference Result 18102 states and 23530 transitions. [2024-11-24 01:53:53,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 01:53:53,713 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 01:53:53,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:53:53,765 INFO L225 Difference]: With dead ends: 18102 [2024-11-24 01:53:53,765 INFO L226 Difference]: Without dead ends: 9554 [2024-11-24 01:53:53,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 598 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=405, Invalid=1851, Unknown=0, NotChecked=0, Total=2256 [2024-11-24 01:53:53,784 INFO L435 NwaCegarLoop]: 464 mSDtfsCounter, 1108 mSDsluCounter, 6015 mSDsCounter, 0 mSdLazyCounter, 2863 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 3169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 2863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:53:53,785 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 6479 Invalid, 3169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 2863 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:53:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9554 states. [2024-11-24 01:53:56,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9554 to 9245. [2024-11-24 01:53:56,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9245 states, 6784 states have (on average 1.294369103773585) internal successors, (8781), 6847 states have internal predecessors, (8781), 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 01:53:56,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9245 states to 9245 states and 11985 transitions. [2024-11-24 01:53:56,668 INFO L78 Accepts]: Start accepts. Automaton has 9245 states and 11985 transitions. Word has length 158 [2024-11-24 01:53:56,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:53:56,669 INFO L471 AbstractCegarLoop]: Abstraction has 9245 states and 11985 transitions. [2024-11-24 01:53:56,669 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 01:53:56,669 INFO L276 IsEmpty]: Start isEmpty. Operand 9245 states and 11985 transitions. [2024-11-24 01:53:56,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 01:53:56,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:53:56,687 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 01:53:56,701 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-24 01:53:56,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:56,892 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:53:56,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:53:56,893 INFO L85 PathProgramCache]: Analyzing trace with hash -747886001, now seen corresponding path program 1 times [2024-11-24 01:53:56,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:53:56,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638963910] [2024-11-24 01:53:56,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:56,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:53:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:58,097 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 01:53:58,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:53:58,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638963910] [2024-11-24 01:53:58,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638963910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:53:58,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411511135] [2024-11-24 01:53:58,098 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:53:58,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:53:58,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:53:58,101 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:53:58,105 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:53:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:53:58,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:53:58,474 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:53:59,065 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 01:53:59,066 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:53:59,708 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 01:53:59,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411511135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:53:59,709 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:53:59,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 17 [2024-11-24 01:53:59,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616500789] [2024-11-24 01:53:59,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:53:59,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-24 01:53:59,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:53:59,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-24 01:53:59,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-24 01:53:59,712 INFO L87 Difference]: Start difference. First operand 9245 states and 11985 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 01:54:04,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:04,857 INFO L93 Difference]: Finished difference Result 23230 states and 30203 transitions. [2024-11-24 01:54:04,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:54:04,858 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 01:54:04,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:04,935 INFO L225 Difference]: With dead ends: 23230 [2024-11-24 01:54:04,936 INFO L226 Difference]: Without dead ends: 14290 [2024-11-24 01:54:04,957 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=268, Invalid=922, Unknown=0, NotChecked=0, Total=1190 [2024-11-24 01:54:04,958 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 2292 mSDsluCounter, 2109 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2292 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 2005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:04,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2292 Valid, 2553 Invalid, 2005 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 01:54:04,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14290 states. [2024-11-24 01:54:07,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14290 to 13095. [2024-11-24 01:54:07,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13095 states, 9588 states have (on average 1.2982895285773883) internal successors, (12448), 9683 states have internal predecessors, (12448), 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 01:54:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13095 states to 13095 states and 17016 transitions. [2024-11-24 01:54:07,660 INFO L78 Accepts]: Start accepts. Automaton has 13095 states and 17016 transitions. Word has length 159 [2024-11-24 01:54:07,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:07,661 INFO L471 AbstractCegarLoop]: Abstraction has 13095 states and 17016 transitions. [2024-11-24 01:54:07,661 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 01:54:07,661 INFO L276 IsEmpty]: Start isEmpty. Operand 13095 states and 17016 transitions. [2024-11-24 01:54:07,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 01:54:07,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:07,679 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 01:54:07,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-24 01:54:07,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:07,884 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:07,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1784161869, now seen corresponding path program 1 times [2024-11-24 01:54:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893898328] [2024-11-24 01:54:07,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:07,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:09,060 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 01:54:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893898328] [2024-11-24 01:54:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893898328] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157589295] [2024-11-24 01:54:09,061 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:09,064 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:09,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:54:09,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:09,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 770 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-24 01:54:09,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:10,139 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 01:54:10,139 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:10,828 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 01:54:10,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157589295] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:10,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:10,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 9] total 18 [2024-11-24 01:54:10,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714774032] [2024-11-24 01:54:10,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:10,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-24 01:54:10,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:10,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-24 01:54:10,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-24 01:54:10,833 INFO L87 Difference]: Start difference. First operand 13095 states and 17016 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 01:54:16,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:16,189 INFO L93 Difference]: Finished difference Result 31966 states and 41701 transitions. [2024-11-24 01:54:16,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-24 01:54:16,190 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 01:54:16,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:16,295 INFO L225 Difference]: With dead ends: 31966 [2024-11-24 01:54:16,295 INFO L226 Difference]: Without dead ends: 19176 [2024-11-24 01:54:16,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 321 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 579 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=431, Invalid=1731, Unknown=0, NotChecked=0, Total=2162 [2024-11-24 01:54:16,328 INFO L435 NwaCegarLoop]: 370 mSDtfsCounter, 1656 mSDsluCounter, 2052 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1656 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 1828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:16,328 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1656 Valid, 2422 Invalid, 1828 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:54:16,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19176 states. [2024-11-24 01:54:19,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19176 to 18925. [2024-11-24 01:54:19,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18925 states, 13911 states have (on average 1.3017755732873266) internal successors, (18109), 14045 states have internal predecessors, (18109), 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 01:54:19,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 24619 transitions. [2024-11-24 01:54:19,880 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 24619 transitions. Word has length 160 [2024-11-24 01:54:19,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:19,880 INFO L471 AbstractCegarLoop]: Abstraction has 18925 states and 24619 transitions. [2024-11-24 01:54:19,880 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 01:54:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 24619 transitions. [2024-11-24 01:54:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2024-11-24 01:54:19,891 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:19,891 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 01:54:19,901 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:54:20,091 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:20,092 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:20,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:20,092 INFO L85 PathProgramCache]: Analyzing trace with hash 823751420, now seen corresponding path program 1 times [2024-11-24 01:54:20,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:20,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194958739] [2024-11-24 01:54:20,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:20,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:21,433 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 01:54:21,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:21,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194958739] [2024-11-24 01:54:21,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194958739] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:21,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037200730] [2024-11-24 01:54:21,434 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:21,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:21,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:21,440 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:21,442 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:54:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:21,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-11-24 01:54:21,828 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:22,167 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 01:54:22,167 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:22,525 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 01:54:22,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037200730] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:22,525 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:22,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 9] total 25 [2024-11-24 01:54:22,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191881187] [2024-11-24 01:54:22,526 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:22,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 01:54:22,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:22,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 01:54:22,528 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=536, Unknown=0, NotChecked=0, Total=600 [2024-11-24 01:54:22,528 INFO L87 Difference]: Start difference. First operand 18925 states and 24619 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 01:54:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:34,615 INFO L93 Difference]: Finished difference Result 51209 states and 66298 transitions. [2024-11-24 01:54:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2024-11-24 01:54:34,616 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 01:54:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:34,727 INFO L225 Difference]: With dead ends: 51209 [2024-11-24 01:54:34,727 INFO L226 Difference]: Without dead ends: 32562 [2024-11-24 01:54:34,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 568 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=462, Invalid=2844, Unknown=0, NotChecked=0, Total=3306 [2024-11-24 01:54:34,771 INFO L435 NwaCegarLoop]: 384 mSDtfsCounter, 1829 mSDsluCounter, 4752 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 5136 SdHoareTripleChecker+Invalid, 2892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 783 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:34,771 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 5136 Invalid, 2892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [783 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-24 01:54:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32562 states. [2024-11-24 01:54:40,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32562 to 21755. [2024-11-24 01:54:40,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21755 states, 15954 states have (on average 1.3004889056036104) internal successors, (20748), 16117 states have internal predecessors, (20748), 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 01:54:40,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21755 states to 21755 states and 28242 transitions. [2024-11-24 01:54:40,547 INFO L78 Accepts]: Start accepts. Automaton has 21755 states and 28242 transitions. Word has length 160 [2024-11-24 01:54:40,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:40,547 INFO L471 AbstractCegarLoop]: Abstraction has 21755 states and 28242 transitions. [2024-11-24 01:54:40,547 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 01:54:40,548 INFO L276 IsEmpty]: Start isEmpty. Operand 21755 states and 28242 transitions. [2024-11-24 01:54:40,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 01:54:40,562 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:40,562 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 01:54:40,571 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:54:40,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:40,763 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:54:40,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:54:40,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1146944991, now seen corresponding path program 1 times [2024-11-24 01:54:40,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:54:40,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278329798] [2024-11-24 01:54:40,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:40,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:54:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:43,070 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 01:54:43,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:54:43,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278329798] [2024-11-24 01:54:43,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278329798] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:54:43,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107863555] [2024-11-24 01:54:43,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:54:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:54:43,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:54:43,074 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:54:43,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:54:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:54:43,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:54:43,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:54:43,859 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 58 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:54:43,859 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:54:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 14 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:54:44,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [107863555] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:54:44,263 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:54:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-11-24 01:54:44,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933634201] [2024-11-24 01:54:44,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:54:44,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:54:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:54:44,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:54:44,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:54:44,267 INFO L87 Difference]: Start difference. First operand 21755 states and 28242 transitions. Second operand has 20 states, 20 states have (on average 12.1) internal successors, (242), 20 states have internal predecessors, (242), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-24 01:54:53,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:54:53,843 INFO L93 Difference]: Finished difference Result 46220 states and 59961 transitions. [2024-11-24 01:54:53,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 01:54:53,844 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.1) internal successors, (242), 20 states have internal predecessors, (242), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) Word has length 168 [2024-11-24 01:54:53,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:54:53,959 INFO L225 Difference]: With dead ends: 46220 [2024-11-24 01:54:53,960 INFO L226 Difference]: Without dead ends: 24731 [2024-11-24 01:54:54,004 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 338 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 01:54:54,005 INFO L435 NwaCegarLoop]: 539 mSDtfsCounter, 1198 mSDsluCounter, 4950 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 389 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 5489 SdHoareTripleChecker+Invalid, 3036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-24 01:54:54,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 5489 Invalid, 3036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-24 01:54:54,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24731 states. [2024-11-24 01:54:59,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24731 to 21964. [2024-11-24 01:54:59,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21964 states, 16140 states have (on average 1.298636926889715) internal successors, (20960), 16304 states have internal predecessors, (20960), 3745 states have call successors, (3745), 2078 states have call predecessors, (3745), 2078 states have return successors, (3745), 3581 states have call predecessors, (3745), 3745 states have call successors, (3745) [2024-11-24 01:54:59,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21964 states to 21964 states and 28450 transitions. [2024-11-24 01:54:59,873 INFO L78 Accepts]: Start accepts. Automaton has 21964 states and 28450 transitions. Word has length 168 [2024-11-24 01:54:59,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:54:59,874 INFO L471 AbstractCegarLoop]: Abstraction has 21964 states and 28450 transitions. [2024-11-24 01:54:59,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.1) internal successors, (242), 20 states have internal predecessors, (242), 8 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (40), 8 states have call predecessors, (40), 8 states have call successors, (40) [2024-11-24 01:54:59,874 INFO L276 IsEmpty]: Start isEmpty. Operand 21964 states and 28450 transitions. [2024-11-24 01:54:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-24 01:54:59,882 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:54:59,883 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:54:59,893 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:55:00,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:00,083 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:00,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1445496451, now seen corresponding path program 1 times [2024-11-24 01:55:00,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:00,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847056060] [2024-11-24 01:55:00,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:00,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:55:00,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:00,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847056060] [2024-11-24 01:55:00,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847056060] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958581263] [2024-11-24 01:55:00,886 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:00,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:00,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:00,889 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:00,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:55:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:01,277 INFO L256 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:55:01,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 71 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:55:01,799 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:55:02,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958581263] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:02,409 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:02,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 19 [2024-11-24 01:55:02,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882461068] [2024-11-24 01:55:02,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:02,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-24 01:55:02,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:02,411 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-24 01:55:02,411 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2024-11-24 01:55:02,411 INFO L87 Difference]: Start difference. First operand 21964 states and 28450 transitions. Second operand has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-24 01:55:10,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:55:10,148 INFO L93 Difference]: Finished difference Result 45018 states and 58363 transitions. [2024-11-24 01:55:10,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 01:55:10,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) Word has length 168 [2024-11-24 01:55:10,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:55:10,271 INFO L225 Difference]: With dead ends: 45018 [2024-11-24 01:55:10,272 INFO L226 Difference]: Without dead ends: 23373 [2024-11-24 01:55:10,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 336 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 403 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=334, Invalid=1306, Unknown=0, NotChecked=0, Total=1640 [2024-11-24 01:55:10,317 INFO L435 NwaCegarLoop]: 381 mSDtfsCounter, 1428 mSDsluCounter, 2427 mSDsCounter, 0 mSdLazyCounter, 1291 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2808 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:55:10,317 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2808 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1291 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:55:10,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23373 states. [2024-11-24 01:55:16,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23373 to 23255. [2024-11-24 01:55:16,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23255 states, 17072 states have (on average 1.2974461105904405) internal successors, (22150), 17246 states have internal predecessors, (22150), 3980 states have call successors, (3980), 2202 states have call predecessors, (3980), 2202 states have return successors, (3980), 3806 states have call predecessors, (3980), 3980 states have call successors, (3980) [2024-11-24 01:55:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23255 states to 23255 states and 30110 transitions. [2024-11-24 01:55:16,617 INFO L78 Accepts]: Start accepts. Automaton has 23255 states and 30110 transitions. Word has length 168 [2024-11-24 01:55:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:55:16,618 INFO L471 AbstractCegarLoop]: Abstraction has 23255 states and 30110 transitions. [2024-11-24 01:55:16,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 11.736842105263158) internal successors, (223), 18 states have internal predecessors, (223), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (32), 8 states have call predecessors, (32), 7 states have call successors, (32) [2024-11-24 01:55:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 23255 states and 30110 transitions. [2024-11-24 01:55:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2024-11-24 01:55:16,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:55:16,632 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:55:16,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-24 01:55:16,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-24 01:55:16,833 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:55:16,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:55:16,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1796723261, now seen corresponding path program 1 times [2024-11-24 01:55:16,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:55:16,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043907251] [2024-11-24 01:55:16,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:16,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:55:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:17,325 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-24 01:55:17,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:55:17,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043907251] [2024-11-24 01:55:17,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043907251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:55:17,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393700770] [2024-11-24 01:55:17,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:55:17,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:55:17,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:55:17,330 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:55:17,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0d8b6eb5-a591-4064-9a58-b7414b1d0a63/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-24 01:55:17,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:55:17,772 INFO L256 TraceCheckSpWp]: Trace formula consists of 788 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-24 01:55:17,780 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:55:18,744 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 27 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-24 01:55:18,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:55:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:55:19,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393700770] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:55:19,794 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:55:19,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 10] total 22 [2024-11-24 01:55:19,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049608670] [2024-11-24 01:55:19,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:55:19,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:55:19,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:55:19,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:55:19,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=391, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:55:19,797 INFO L87 Difference]: Start difference. First operand 23255 states and 30110 transitions. Second operand has 22 states, 22 states have (on average 13.136363636363637) internal successors, (289), 21 states have internal predecessors, (289), 11 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (39), 12 states have call predecessors, (39), 11 states have call successors, (39)