./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 935656e2fd7f83fa1197920e6391ee831ebff85c688a5254e91079e29a430b75 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:26:17,562 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:26:17,667 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:26:17,673 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:26:17,674 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:26:17,704 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:26:17,705 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:26:17,706 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:26:17,706 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:26:17,706 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:26:17,707 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:26:17,707 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:26:17,707 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:26:17,707 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:26:17,707 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:26:17,708 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:26:17,708 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:26:17,708 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:26:17,708 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:26:17,709 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:26:17,710 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:26:17,710 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:26:17,710 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:26:17,710 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:26:17,710 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:26:17,710 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:26:17,711 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:26:17,711 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:26:17,711 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:26:17,712 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:26:17,712 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_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 935656e2fd7f83fa1197920e6391ee831ebff85c688a5254e91079e29a430b75 [2024-11-27 20:26:18,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:26:18,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:26:18,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:26:18,101 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:26:18,101 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:26:18,103 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:26:21,673 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/data/4bb335101/a0b2bfc511704d0f8265e9a7b08ebeb2/FLAG26fed5087 [2024-11-27 20:26:22,506 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:26:22,507 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:26:22,562 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/data/4bb335101/a0b2bfc511704d0f8265e9a7b08ebeb2/FLAG26fed5087 [2024-11-27 20:26:22,779 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/data/4bb335101/a0b2bfc511704d0f8265e9a7b08ebeb2 [2024-11-27 20:26:22,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:26:22,783 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:26:22,785 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:26:22,785 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:26:22,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:26:22,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:26:22" (1/1) ... [2024-11-27 20:26:22,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b7dce50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:22, skipping insertion in model container [2024-11-27 20:26:22,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:26:22" (1/1) ... [2024-11-27 20:26:22,964 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:26:23,424 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_272acc2a-40a1-4002-8584-bd18efdd1877/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2024-11-27 20:26:23,543 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_272acc2a-40a1-4002-8584-bd18efdd1877/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2024-11-27 20:26:24,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:26:24,723 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:26:24,776 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_272acc2a-40a1-4002-8584-bd18efdd1877/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[6524,6537] [2024-11-27 20:26:24,801 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_272acc2a-40a1-4002-8584-bd18efdd1877/sv-benchmarks/c/combinations/pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c[13585,13598] [2024-11-27 20:26:25,470 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:26:25,512 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:26:25,513 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25 WrapperNode [2024-11-27 20:26:25,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:26:25,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:26:25,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:26:25,516 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:26:25,531 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:25,613 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,065 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4979 [2024-11-27 20:26:26,066 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:26:26,066 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:26:26,067 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:26:26,067 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:26:26,078 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,196 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,414 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:26:26,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,581 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,600 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,646 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,682 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,705 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,891 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:26:26,897 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:26:26,899 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:26:26,899 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:26:26,900 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (1/1) ... [2024-11-27 20:26:26,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:26:26,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:26,978 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:26:26,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:26:27,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:26:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:26:27,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:26:27,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:26:27,275 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:26:27,284 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:26:34,608 INFO L? ?]: Removed 734 outVars from TransFormulas that were not future-live. [2024-11-27 20:26:34,608 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:26:34,647 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:26:34,648 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:26:34,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:26:34 BoogieIcfgContainer [2024-11-27 20:26:34,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:26:34,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:26:34,652 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:26:34,659 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:26:34,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:26:22" (1/3) ... [2024-11-27 20:26:34,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ded16a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:26:34, skipping insertion in model container [2024-11-27 20:26:34,660 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:26:25" (2/3) ... [2024-11-27 20:26:34,660 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ded16a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:26:34, skipping insertion in model container [2024-11-27 20:26:34,661 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:26:34" (3/3) ... [2024-11-27 20:26:34,662 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c [2024-11-27 20:26:34,684 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:26:34,689 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals+Problem12_label04.c that has 1 procedures, 872 locations, 1 initial locations, 2 loop locations, and 2 error locations. [2024-11-27 20:26:34,904 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:26:34,928 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;@6081bed5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:26:34,928 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-27 20:26:34,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:34,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:26:34,953 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:34,954 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] [2024-11-27 20:26:34,954 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:34,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1537187155, now seen corresponding path program 1 times [2024-11-27 20:26:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:34,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316551658] [2024-11-27 20:26:34,979 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:34,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:35,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:35,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:35,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:35,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316551658] [2024-11-27 20:26:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316551658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:35,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:26:35,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541072781] [2024-11-27 20:26:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:35,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:26:35,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:35,390 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:26:35,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:26:35,398 INFO L87 Difference]: Start difference. First operand has 872 states, 869 states have (on average 1.906789413118527) internal successors, (1657), 871 states have internal predecessors, (1657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:35,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:35,582 INFO L93 Difference]: Finished difference Result 1720 states and 3272 transitions. [2024-11-27 20:26:35,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:26:35,587 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 20:26:35,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:35,607 INFO L225 Difference]: With dead ends: 1720 [2024-11-27 20:26:35,607 INFO L226 Difference]: Without dead ends: 806 [2024-11-27 20:26:35,614 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 [2024-11-27 20:26:35,619 INFO L435 NwaCegarLoop]: 1588 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, 1588 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 [2024-11-27 20:26:35,620 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:35,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-27 20:26:35,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-27 20:26:35,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8955223880597014) internal successors, (1524), 805 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:35,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1524 transitions. [2024-11-27 20:26:35,730 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1524 transitions. Word has length 20 [2024-11-27 20:26:35,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:35,731 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1524 transitions. [2024-11-27 20:26:35,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:35,732 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1524 transitions. [2024-11-27 20:26:35,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 20:26:35,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:35,737 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] [2024-11-27 20:26:35,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:26:35,737 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:35,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:35,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1746662891, now seen corresponding path program 1 times [2024-11-27 20:26:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300762743] [2024-11-27 20:26:35,739 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:35,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:35,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:36,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:36,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300762743] [2024-11-27 20:26:36,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300762743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:36,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:36,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:36,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226153074] [2024-11-27 20:26:36,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:36,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:36,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:36,203 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:36,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:36,204 INFO L87 Difference]: Start difference. First operand 806 states and 1524 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:36,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:36,374 INFO L93 Difference]: Finished difference Result 840 states and 1575 transitions. [2024-11-27 20:26:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:26:36,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-27 20:26:36,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:36,386 INFO L225 Difference]: With dead ends: 840 [2024-11-27 20:26:36,386 INFO L226 Difference]: Without dead ends: 806 [2024-11-27 20:26:36,387 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:36,391 INFO L435 NwaCegarLoop]: 1522 mSDtfsCounter, 0 mSDsluCounter, 4545 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:36,392 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6067 Invalid, 28 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:36,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 806 states. [2024-11-27 20:26:36,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 806 to 806. [2024-11-27 20:26:36,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 804 states have (on average 1.8756218905472637) internal successors, (1508), 805 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1508 transitions. [2024-11-27 20:26:36,467 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1508 transitions. Word has length 20 [2024-11-27 20:26:36,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:36,467 INFO L471 AbstractCegarLoop]: Abstraction has 806 states and 1508 transitions. [2024-11-27 20:26:36,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:36,468 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1508 transitions. [2024-11-27 20:26:36,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-27 20:26:36,469 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:36,469 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] [2024-11-27 20:26:36,470 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:26:36,470 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:36,471 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:36,471 INFO L85 PathProgramCache]: Analyzing trace with hash 623816355, now seen corresponding path program 1 times [2024-11-27 20:26:36,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:36,471 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040632698] [2024-11-27 20:26:36,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:36,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:36,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:36,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:36,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040632698] [2024-11-27 20:26:36,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040632698] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:36,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:36,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:36,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633789008] [2024-11-27 20:26:36,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:36,862 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:36,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:36,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:36,863 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:36,864 INFO L87 Difference]: Start difference. First operand 806 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:37,142 INFO L93 Difference]: Finished difference Result 986 states and 1790 transitions. [2024-11-27 20:26:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:26:37,143 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2024-11-27 20:26:37,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:37,149 INFO L225 Difference]: With dead ends: 986 [2024-11-27 20:26:37,150 INFO L226 Difference]: Without dead ends: 956 [2024-11-27 20:26:37,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:26:37,152 INFO L435 NwaCegarLoop]: 1504 mSDtfsCounter, 4589 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4589 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:37,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4589 Valid, 1865 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:37,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2024-11-27 20:26:37,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 834. [2024-11-27 20:26:37,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8653846153846154) internal successors, (1552), 833 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1552 transitions. [2024-11-27 20:26:37,198 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1552 transitions. Word has length 35 [2024-11-27 20:26:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:37,198 INFO L471 AbstractCegarLoop]: Abstraction has 834 states and 1552 transitions. [2024-11-27 20:26:37,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1552 transitions. [2024-11-27 20:26:37,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 20:26:37,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:37,200 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] [2024-11-27 20:26:37,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:26:37,201 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:37,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:37,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1071361683, now seen corresponding path program 1 times [2024-11-27 20:26:37,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:37,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432130526] [2024-11-27 20:26:37,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:37,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:37,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:37,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:37,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432130526] [2024-11-27 20:26:37,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432130526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:37,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:37,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:37,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384960414] [2024-11-27 20:26:37,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:37,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:37,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:37,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:37,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:37,406 INFO L87 Difference]: Start difference. First operand 834 states and 1552 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:37,478 INFO L93 Difference]: Finished difference Result 939 states and 1715 transitions. [2024-11-27 20:26:37,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:37,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 20:26:37,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:37,486 INFO L225 Difference]: With dead ends: 939 [2024-11-27 20:26:37,486 INFO L226 Difference]: Without dead ends: 881 [2024-11-27 20:26:37,487 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 [2024-11-27 20:26:37,493 INFO L435 NwaCegarLoop]: 1506 mSDtfsCounter, 1466 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1548 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:37,494 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1548 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:37,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-27 20:26:37,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-27 20:26:37,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2024-11-27 20:26:37,546 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 37 [2024-11-27 20:26:37,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:37,547 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2024-11-27 20:26:37,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:37,547 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2024-11-27 20:26:37,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-27 20:26:37,551 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:37,551 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] [2024-11-27 20:26:37,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:26:37,552 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:37,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:37,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1137855195, now seen corresponding path program 1 times [2024-11-27 20:26:37,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:37,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874666351] [2024-11-27 20:26:37,554 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:37,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:37,995 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:37,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874666351] [2024-11-27 20:26:37,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874666351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:37,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:37,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:37,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742119182] [2024-11-27 20:26:37,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:37,996 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:37,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:37,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:37,997 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:37,998 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:38,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:38,175 INFO L93 Difference]: Finished difference Result 984 states and 1780 transitions. [2024-11-27 20:26:38,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:26:38,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2024-11-27 20:26:38,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:38,182 INFO L225 Difference]: With dead ends: 984 [2024-11-27 20:26:38,182 INFO L226 Difference]: Without dead ends: 881 [2024-11-27 20:26:38,183 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:26:38,185 INFO L435 NwaCegarLoop]: 1503 mSDtfsCounter, 2946 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2946 SdHoareTripleChecker+Valid, 1592 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 [2024-11-27 20:26:38,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2946 Valid, 1592 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:38,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2024-11-27 20:26:38,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2024-11-27 20:26:38,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8449258836944127) internal successors, (1618), 878 states have internal predecessors, (1618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:38,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1618 transitions. [2024-11-27 20:26:38,232 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1618 transitions. Word has length 37 [2024-11-27 20:26:38,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:38,234 INFO L471 AbstractCegarLoop]: Abstraction has 879 states and 1618 transitions. [2024-11-27 20:26:38,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:38,235 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1618 transitions. [2024-11-27 20:26:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-27 20:26:38,240 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:38,240 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] [2024-11-27 20:26:38,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:26:38,241 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:38,241 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:38,241 INFO L85 PathProgramCache]: Analyzing trace with hash 499049456, now seen corresponding path program 1 times [2024-11-27 20:26:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:38,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102753506] [2024-11-27 20:26:38,242 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:38,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:38,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102753506] [2024-11-27 20:26:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102753506] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:38,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:38,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:26:38,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659998180] [2024-11-27 20:26:38,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:38,796 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:26:38,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:38,796 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:26:38,797 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:26:38,800 INFO L87 Difference]: Start difference. First operand 879 states and 1618 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:38,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:38,981 INFO L93 Difference]: Finished difference Result 887 states and 1627 transitions. [2024-11-27 20:26:38,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:26:38,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-27 20:26:38,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:38,992 INFO L225 Difference]: With dead ends: 887 [2024-11-27 20:26:38,993 INFO L226 Difference]: Without dead ends: 885 [2024-11-27 20:26:38,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:26:38,994 INFO L435 NwaCegarLoop]: 1502 mSDtfsCounter, 0 mSDsluCounter, 8999 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10501 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:38,996 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10501 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:39,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2024-11-27 20:26:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2024-11-27 20:26:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.838052095130238) internal successors, (1623), 884 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1623 transitions. [2024-11-27 20:26:39,043 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1623 transitions. Word has length 38 [2024-11-27 20:26:39,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:39,044 INFO L471 AbstractCegarLoop]: Abstraction has 885 states and 1623 transitions. [2024-11-27 20:26:39,044 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,045 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1623 transitions. [2024-11-27 20:26:39,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 20:26:39,046 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:39,046 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] [2024-11-27 20:26:39,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:26:39,047 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:39,047 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:39,047 INFO L85 PathProgramCache]: Analyzing trace with hash 166228827, now seen corresponding path program 1 times [2024-11-27 20:26:39,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:39,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491697079] [2024-11-27 20:26:39,048 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:39,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:39,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:39,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491697079] [2024-11-27 20:26:39,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491697079] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:39,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:39,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:39,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335444420] [2024-11-27 20:26:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:39,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:39,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:39,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:39,168 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:39,169 INFO L87 Difference]: Start difference. First operand 885 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:39,227 INFO L93 Difference]: Finished difference Result 1007 states and 1804 transitions. [2024-11-27 20:26:39,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:39,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 20:26:39,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:39,234 INFO L225 Difference]: With dead ends: 1007 [2024-11-27 20:26:39,234 INFO L226 Difference]: Without dead ends: 943 [2024-11-27 20:26:39,235 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 [2024-11-27 20:26:39,236 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 1476 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1588 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:39,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1588 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 943 states. [2024-11-27 20:26:39,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 943 to 941. [2024-11-27 20:26:39,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 939 states have (on average 1.8146964856230032) internal successors, (1704), 940 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1704 transitions. [2024-11-27 20:26:39,285 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1704 transitions. Word has length 39 [2024-11-27 20:26:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:39,285 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1704 transitions. [2024-11-27 20:26:39,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1704 transitions. [2024-11-27 20:26:39,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 20:26:39,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:39,288 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] [2024-11-27 20:26:39,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:26:39,289 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:39,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2049239973, now seen corresponding path program 1 times [2024-11-27 20:26:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:39,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697866342] [2024-11-27 20:26:39,291 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:39,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:39,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:39,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:39,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697866342] [2024-11-27 20:26:39,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697866342] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:39,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:39,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:39,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586066743] [2024-11-27 20:26:39,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:39,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:39,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:39,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:39,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:39,385 INFO L87 Difference]: Start difference. First operand 941 states and 1704 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:39,446 INFO L93 Difference]: Finished difference Result 1243 states and 2144 transitions. [2024-11-27 20:26:39,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:39,447 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 20:26:39,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:39,455 INFO L225 Difference]: With dead ends: 1243 [2024-11-27 20:26:39,455 INFO L226 Difference]: Without dead ends: 1080 [2024-11-27 20:26:39,456 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 [2024-11-27 20:26:39,457 INFO L435 NwaCegarLoop]: 1542 mSDtfsCounter, 1474 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:39,457 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1080 states. [2024-11-27 20:26:39,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1080 to 1078. [2024-11-27 20:26:39,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1078 states, 1076 states have (on average 1.762081784386617) internal successors, (1896), 1077 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1078 states to 1078 states and 1896 transitions. [2024-11-27 20:26:39,509 INFO L78 Accepts]: Start accepts. Automaton has 1078 states and 1896 transitions. Word has length 39 [2024-11-27 20:26:39,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:39,509 INFO L471 AbstractCegarLoop]: Abstraction has 1078 states and 1896 transitions. [2024-11-27 20:26:39,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,510 INFO L276 IsEmpty]: Start isEmpty. Operand 1078 states and 1896 transitions. [2024-11-27 20:26:39,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 20:26:39,511 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:39,512 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] [2024-11-27 20:26:39,512 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:26:39,512 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:39,513 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:39,513 INFO L85 PathProgramCache]: Analyzing trace with hash -268307109, now seen corresponding path program 1 times [2024-11-27 20:26:39,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:39,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144331386] [2024-11-27 20:26:39,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:39,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:39,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:39,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144331386] [2024-11-27 20:26:39,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144331386] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:39,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:39,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:39,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708828639] [2024-11-27 20:26:39,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:39,610 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:39,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:39,610 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:39,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:39,610 INFO L87 Difference]: Start difference. First operand 1078 states and 1896 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:39,681 INFO L93 Difference]: Finished difference Result 1630 states and 2678 transitions. [2024-11-27 20:26:39,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:39,681 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2024-11-27 20:26:39,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:39,688 INFO L225 Difference]: With dead ends: 1630 [2024-11-27 20:26:39,688 INFO L226 Difference]: Without dead ends: 1330 [2024-11-27 20:26:39,689 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 [2024-11-27 20:26:39,691 INFO L435 NwaCegarLoop]: 1540 mSDtfsCounter, 1472 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1472 SdHoareTripleChecker+Valid, 1596 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:39,692 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1472 Valid, 1596 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states. [2024-11-27 20:26:39,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1328. [2024-11-27 20:26:39,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1328 states, 1326 states have (on average 1.6832579185520362) internal successors, (2232), 1327 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1328 states to 1328 states and 2232 transitions. [2024-11-27 20:26:39,759 INFO L78 Accepts]: Start accepts. Automaton has 1328 states and 2232 transitions. Word has length 39 [2024-11-27 20:26:39,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:39,760 INFO L471 AbstractCegarLoop]: Abstraction has 1328 states and 2232 transitions. [2024-11-27 20:26:39,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:39,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1328 states and 2232 transitions. [2024-11-27 20:26:39,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:26:39,763 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:39,763 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] [2024-11-27 20:26:39,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:26:39,764 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:39,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 1567417933, now seen corresponding path program 1 times [2024-11-27 20:26:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:39,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190579448] [2024-11-27 20:26:39,766 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:39,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:26:40,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:40,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190579448] [2024-11-27 20:26:40,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190579448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:40,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:40,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:40,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18605645] [2024-11-27 20:26:40,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:40,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:40,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:40,019 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:40,019 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:40,019 INFO L87 Difference]: Start difference. First operand 1328 states and 2232 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:40,194 INFO L93 Difference]: Finished difference Result 2960 states and 4508 transitions. [2024-11-27 20:26:40,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:26:40,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-27 20:26:40,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:40,208 INFO L225 Difference]: With dead ends: 2960 [2024-11-27 20:26:40,208 INFO L226 Difference]: Without dead ends: 2558 [2024-11-27 20:26:40,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:26:40,213 INFO L435 NwaCegarLoop]: 1548 mSDtfsCounter, 3039 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3039 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:40,213 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3039 Valid, 3160 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:40,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2024-11-27 20:26:40,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 1804. [2024-11-27 20:26:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1804 states, 1802 states have (on average 1.602663706992231) internal successors, (2888), 1803 states have internal predecessors, (2888), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1804 states to 1804 states and 2888 transitions. [2024-11-27 20:26:40,298 INFO L78 Accepts]: Start accepts. Automaton has 1804 states and 2888 transitions. Word has length 54 [2024-11-27 20:26:40,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:40,299 INFO L471 AbstractCegarLoop]: Abstraction has 1804 states and 2888 transitions. [2024-11-27 20:26:40,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1804 states and 2888 transitions. [2024-11-27 20:26:40,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:26:40,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:40,300 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] [2024-11-27 20:26:40,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:26:40,300 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:40,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:40,301 INFO L85 PathProgramCache]: Analyzing trace with hash -648050867, now seen corresponding path program 1 times [2024-11-27 20:26:40,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:40,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066412463] [2024-11-27 20:26:40,301 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:40,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:40,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:40,484 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 20:26:40,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:40,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066412463] [2024-11-27 20:26:40,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066412463] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:40,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:40,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:40,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298024423] [2024-11-27 20:26:40,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:40,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:40,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:40,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:40,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:40,485 INFO L87 Difference]: Start difference. First operand 1804 states and 2888 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:40,687 INFO L93 Difference]: Finished difference Result 3508 states and 5268 transitions. [2024-11-27 20:26:40,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:26:40,687 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-27 20:26:40,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:40,699 INFO L225 Difference]: With dead ends: 3508 [2024-11-27 20:26:40,699 INFO L226 Difference]: Without dead ends: 2958 [2024-11-27 20:26:40,703 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:26:40,703 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 3041 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3041 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:40,704 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3041 Valid, 3147 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:40,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2958 states. [2024-11-27 20:26:40,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2958 to 2552. [2024-11-27 20:26:40,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2552 states, 2550 states have (on average 1.5356862745098039) internal successors, (3916), 2551 states have internal predecessors, (3916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2552 states to 2552 states and 3916 transitions. [2024-11-27 20:26:40,797 INFO L78 Accepts]: Start accepts. Automaton has 2552 states and 3916 transitions. Word has length 54 [2024-11-27 20:26:40,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:40,797 INFO L471 AbstractCegarLoop]: Abstraction has 2552 states and 3916 transitions. [2024-11-27 20:26:40,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:40,797 INFO L276 IsEmpty]: Start isEmpty. Operand 2552 states and 3916 transitions. [2024-11-27 20:26:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-27 20:26:40,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:40,799 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] [2024-11-27 20:26:40,799 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:26:40,799 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:40,799 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:40,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1132881997, now seen corresponding path program 1 times [2024-11-27 20:26:40,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:40,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395154231] [2024-11-27 20:26:40,799 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:40,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 20:26:40,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395154231] [2024-11-27 20:26:40,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395154231] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:40,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:40,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:26:40,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366702528] [2024-11-27 20:26:40,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:40,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:26:40,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:40,952 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:26:40,952 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:26:40,952 INFO L87 Difference]: Start difference. First operand 2552 states and 3916 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:41,133 INFO L93 Difference]: Finished difference Result 4056 states and 6024 transitions. [2024-11-27 20:26:41,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:26:41,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2024-11-27 20:26:41,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:41,149 INFO L225 Difference]: With dead ends: 4056 [2024-11-27 20:26:41,149 INFO L226 Difference]: Without dead ends: 3506 [2024-11-27 20:26:41,151 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:26:41,152 INFO L435 NwaCegarLoop]: 1546 mSDtfsCounter, 3047 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3047 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:41,152 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3047 Valid, 3153 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:26:41,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2024-11-27 20:26:41,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3100. [2024-11-27 20:26:41,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.5080697224015494) internal successors, (4672), 3099 states have internal predecessors, (4672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4672 transitions. [2024-11-27 20:26:41,276 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4672 transitions. Word has length 54 [2024-11-27 20:26:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:41,276 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4672 transitions. [2024-11-27 20:26:41,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4672 transitions. [2024-11-27 20:26:41,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 20:26:41,279 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:41,279 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] [2024-11-27 20:26:41,279 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:26:41,280 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:41,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:41,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1336470191, now seen corresponding path program 1 times [2024-11-27 20:26:41,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:41,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347350093] [2024-11-27 20:26:41,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:41,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:41,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:41,425 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:41,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:41,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347350093] [2024-11-27 20:26:41,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347350093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:41,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:41,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:41,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655033311] [2024-11-27 20:26:41,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:41,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:41,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:41,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:41,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:41,428 INFO L87 Difference]: Start difference. First operand 3100 states and 4672 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:41,524 INFO L93 Difference]: Finished difference Result 5424 states and 7882 transitions. [2024-11-27 20:26:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2024-11-27 20:26:41,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:41,538 INFO L225 Difference]: With dead ends: 5424 [2024-11-27 20:26:41,539 INFO L226 Difference]: Without dead ends: 3102 [2024-11-27 20:26:41,542 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 [2024-11-27 20:26:41,543 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 29 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3022 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:41,543 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3022 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:41,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3102 states. [2024-11-27 20:26:41,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3102 to 3100. [2024-11-27 20:26:41,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3100 states, 3098 states have (on average 1.4919302775984506) internal successors, (4622), 3099 states have internal predecessors, (4622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3100 states to 3100 states and 4622 transitions. [2024-11-27 20:26:41,666 INFO L78 Accepts]: Start accepts. Automaton has 3100 states and 4622 transitions. Word has length 55 [2024-11-27 20:26:41,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:41,666 INFO L471 AbstractCegarLoop]: Abstraction has 3100 states and 4622 transitions. [2024-11-27 20:26:41,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,666 INFO L276 IsEmpty]: Start isEmpty. Operand 3100 states and 4622 transitions. [2024-11-27 20:26:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 20:26:41,667 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:41,668 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] [2024-11-27 20:26:41,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:26:41,668 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:41,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:41,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1355833083, now seen corresponding path program 1 times [2024-11-27 20:26:41,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:41,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485459233] [2024-11-27 20:26:41,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:41,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:41,806 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:41,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:41,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485459233] [2024-11-27 20:26:41,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485459233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:41,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:41,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:41,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555317141] [2024-11-27 20:26:41,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:41,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:41,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:41,808 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:41,808 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:41,808 INFO L87 Difference]: Start difference. First operand 3100 states and 4622 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:41,876 INFO L93 Difference]: Finished difference Result 4019 states and 5882 transitions. [2024-11-27 20:26:41,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:41,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-27 20:26:41,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:41,886 INFO L225 Difference]: With dead ends: 4019 [2024-11-27 20:26:41,886 INFO L226 Difference]: Without dead ends: 1697 [2024-11-27 20:26:41,889 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 [2024-11-27 20:26:41,890 INFO L435 NwaCegarLoop]: 1524 mSDtfsCounter, 23 mSDsluCounter, 1495 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 3019 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:41,890 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 3019 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2024-11-27 20:26:41,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1689. [2024-11-27 20:26:41,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1689 states, 1687 states have (on average 1.5986959098992295) internal successors, (2697), 1688 states have internal predecessors, (2697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1689 states to 1689 states and 2697 transitions. [2024-11-27 20:26:41,956 INFO L78 Accepts]: Start accepts. Automaton has 1689 states and 2697 transitions. Word has length 56 [2024-11-27 20:26:41,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:41,957 INFO L471 AbstractCegarLoop]: Abstraction has 1689 states and 2697 transitions. [2024-11-27 20:26:41,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1689 states and 2697 transitions. [2024-11-27 20:26:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 20:26:41,958 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:41,958 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] [2024-11-27 20:26:41,958 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:26:41,958 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:41,959 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1597882527, now seen corresponding path program 1 times [2024-11-27 20:26:41,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:41,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183562838] [2024-11-27 20:26:41,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:41,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:42,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:42,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183562838] [2024-11-27 20:26:42,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183562838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:42,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:42,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:26:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914968286] [2024-11-27 20:26:42,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:42,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:26:42,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:42,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:26:42,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:26:42,089 INFO L87 Difference]: Start difference. First operand 1689 states and 2697 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:42,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:42,138 INFO L93 Difference]: Finished difference Result 2143 states and 3311 transitions. [2024-11-27 20:26:42,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:26:42,139 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-27 20:26:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:42,149 INFO L225 Difference]: With dead ends: 2143 [2024-11-27 20:26:42,153 INFO L226 Difference]: Without dead ends: 1241 [2024-11-27 20:26:42,154 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 [2024-11-27 20:26:42,155 INFO L435 NwaCegarLoop]: 1518 mSDtfsCounter, 25 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:42,155 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 2998 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:26:42,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2024-11-27 20:26:42,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1239. [2024-11-27 20:26:42,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1239 states, 1237 states have (on average 1.6782538399353275) internal successors, (2076), 1238 states have internal predecessors, (2076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:42,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1239 states to 1239 states and 2076 transitions. [2024-11-27 20:26:42,215 INFO L78 Accepts]: Start accepts. Automaton has 1239 states and 2076 transitions. Word has length 57 [2024-11-27 20:26:42,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:42,215 INFO L471 AbstractCegarLoop]: Abstraction has 1239 states and 2076 transitions. [2024-11-27 20:26:42,216 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:42,216 INFO L276 IsEmpty]: Start isEmpty. Operand 1239 states and 2076 transitions. [2024-11-27 20:26:42,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 20:26:42,217 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:42,217 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] [2024-11-27 20:26:42,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:26:42,217 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:42,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1649038701, now seen corresponding path program 1 times [2024-11-27 20:26:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208162742] [2024-11-27 20:26:42,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:42,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:45,058 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:45,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:45,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208162742] [2024-11-27 20:26:45,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208162742] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:45,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852104207] [2024-11-27 20:26:45,059 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:45,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:45,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:45,064 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:45,068 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:26:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:45,219 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-27 20:26:45,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:45,545 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:26:45,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:45,820 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 20:26:45,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852104207] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:45,821 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2024-11-27 20:26:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615044591] [2024-11-27 20:26:45,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:45,822 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:26:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:45,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:26:45,823 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:26:45,823 INFO L87 Difference]: Start difference. First operand 1239 states and 2076 transitions. Second operand has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:49,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:49,287 INFO L93 Difference]: Finished difference Result 3541 states and 5099 transitions. [2024-11-27 20:26:49,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 20:26:49,288 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-27 20:26:49,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:49,314 INFO L225 Difference]: With dead ends: 3541 [2024-11-27 20:26:49,315 INFO L226 Difference]: Without dead ends: 3089 [2024-11-27 20:26:49,318 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=545, Invalid=2535, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 20:26:49,320 INFO L435 NwaCegarLoop]: 1495 mSDtfsCounter, 15728 mSDsluCounter, 7675 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15728 SdHoareTripleChecker+Valid, 9170 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:49,322 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15728 Valid, 9170 Invalid, 711 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [41 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:26:49,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3089 states. [2024-11-27 20:26:49,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3089 to 2971. [2024-11-27 20:26:49,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2971 states, 2969 states have (on average 1.4277534523408555) internal successors, (4239), 2970 states have internal predecessors, (4239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2971 states to 2971 states and 4239 transitions. [2024-11-27 20:26:49,481 INFO L78 Accepts]: Start accepts. Automaton has 2971 states and 4239 transitions. Word has length 59 [2024-11-27 20:26:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:49,481 INFO L471 AbstractCegarLoop]: Abstraction has 2971 states and 4239 transitions. [2024-11-27 20:26:49,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.421052631578947) internal successors, (160), 19 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 2971 states and 4239 transitions. [2024-11-27 20:26:49,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 20:26:49,484 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:49,487 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] [2024-11-27 20:26:49,503 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:26:49,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 20:26:49,688 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:49,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:49,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1651307681, now seen corresponding path program 1 times [2024-11-27 20:26:49,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:49,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381536172] [2024-11-27 20:26:49,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:53,235 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:53,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:53,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381536172] [2024-11-27 20:26:53,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381536172] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:53,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924508135] [2024-11-27 20:26:53,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:53,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:53,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:53,239 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:53,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:26:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:53,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:26:53,413 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:26:54,107 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:54,107 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:26:55,360 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:55,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924508135] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:26:55,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:26:55,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 25 [2024-11-27 20:26:55,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078595742] [2024-11-27 20:26:55,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:26:55,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:26:55,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:55,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:26:55,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:26:55,364 INFO L87 Difference]: Start difference. First operand 2971 states and 4239 transitions. Second operand has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:56,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:56,586 INFO L93 Difference]: Finished difference Result 6894 states and 9256 transitions. [2024-11-27 20:26:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:26:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-27 20:26:56,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:56,612 INFO L225 Difference]: With dead ends: 6894 [2024-11-27 20:26:56,612 INFO L226 Difference]: Without dead ends: 5105 [2024-11-27 20:26:56,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=287, Invalid=1045, Unknown=0, NotChecked=0, Total=1332 [2024-11-27 20:26:56,615 INFO L435 NwaCegarLoop]: 1491 mSDtfsCounter, 15174 mSDsluCounter, 3271 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15174 SdHoareTripleChecker+Valid, 4762 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:56,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15174 Valid, 4762 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:26:56,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5105 states. [2024-11-27 20:26:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5105 to 5039. [2024-11-27 20:26:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5039 states, 5037 states have (on average 1.345245185626365) internal successors, (6776), 5038 states have internal predecessors, (6776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:56,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5039 states to 5039 states and 6776 transitions. [2024-11-27 20:26:56,821 INFO L78 Accepts]: Start accepts. Automaton has 5039 states and 6776 transitions. Word has length 60 [2024-11-27 20:26:56,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:56,821 INFO L471 AbstractCegarLoop]: Abstraction has 5039 states and 6776 transitions. [2024-11-27 20:26:56,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.538461538461538) internal successors, (144), 25 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:26:56,822 INFO L276 IsEmpty]: Start isEmpty. Operand 5039 states and 6776 transitions. [2024-11-27 20:26:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 20:26:56,823 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:56,823 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] [2024-11-27 20:26:56,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:26:57,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-27 20:26:57,028 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:57,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:57,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1955522029, now seen corresponding path program 1 times [2024-11-27 20:26:57,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:57,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908223819] [2024-11-27 20:26:57,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:57,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:57,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:26:57,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:57,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908223819] [2024-11-27 20:26:57,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908223819] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:26:57,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81092099] [2024-11-27 20:26:57,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:57,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:26:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:26:57,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:26:57,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:26:57,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:57,739 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 20:26:57,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:00,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:00,437 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:03,371 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:03,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81092099] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:03,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:03,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 16] total 38 [2024-11-27 20:27:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462786449] [2024-11-27 20:27:03,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:03,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 20:27:03,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:03,374 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 20:27:03,375 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1249, Unknown=0, NotChecked=0, Total=1406 [2024-11-27 20:27:03,375 INFO L87 Difference]: Start difference. First operand 5039 states and 6776 transitions. Second operand has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:34,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:34,856 INFO L93 Difference]: Finished difference Result 15921 states and 20643 transitions. [2024-11-27 20:27:34,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2024-11-27 20:27:34,856 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2024-11-27 20:27:34,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:34,890 INFO L225 Difference]: With dead ends: 15921 [2024-11-27 20:27:34,890 INFO L226 Difference]: Without dead ends: 11980 [2024-11-27 20:27:34,905 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11487 ImplicationChecksByTransitivity, 30.3s TimeCoverageRelationStatistics Valid=5606, Invalid=24844, Unknown=0, NotChecked=0, Total=30450 [2024-11-27 20:27:34,905 INFO L435 NwaCegarLoop]: 1547 mSDtfsCounter, 16301 mSDsluCounter, 17762 mSDsCounter, 0 mSdLazyCounter, 1969 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16301 SdHoareTripleChecker+Valid, 19309 SdHoareTripleChecker+Invalid, 2092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:34,906 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16301 Valid, 19309 Invalid, 2092 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [123 Valid, 1969 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:27:34,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11980 states. [2024-11-27 20:27:35,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11980 to 9110. [2024-11-27 20:27:35,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9110 states, 9108 states have (on average 1.3072024593763725) internal successors, (11906), 9109 states have internal predecessors, (11906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:35,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9110 states to 9110 states and 11906 transitions. [2024-11-27 20:27:35,530 INFO L78 Accepts]: Start accepts. Automaton has 9110 states and 11906 transitions. Word has length 60 [2024-11-27 20:27:35,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:35,530 INFO L471 AbstractCegarLoop]: Abstraction has 9110 states and 11906 transitions. [2024-11-27 20:27:35,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 4.157894736842105) internal successors, (158), 38 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:35,531 INFO L276 IsEmpty]: Start isEmpty. Operand 9110 states and 11906 transitions. [2024-11-27 20:27:35,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 20:27:35,532 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:35,532 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] [2024-11-27 20:27:35,546 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:27:35,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 20:27:35,737 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:35,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:35,737 INFO L85 PathProgramCache]: Analyzing trace with hash -909285249, now seen corresponding path program 1 times [2024-11-27 20:27:35,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:35,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389442589] [2024-11-27 20:27:35,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:35,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:36,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:36,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389442589] [2024-11-27 20:27:36,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389442589] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:36,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849397960] [2024-11-27 20:27:36,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:36,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:36,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:36,261 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:36,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:27:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:36,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-27 20:27:36,410 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:38,387 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:38,387 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:27:39,783 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:39,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849397960] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:27:39,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:27:39,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 26 [2024-11-27 20:27:39,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390067382] [2024-11-27 20:27:39,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:27:39,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 20:27:39,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:39,785 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 20:27:39,785 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:27:39,786 INFO L87 Difference]: Start difference. First operand 9110 states and 11906 transitions. Second operand has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:41,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:41,997 INFO L93 Difference]: Finished difference Result 18270 states and 23432 transitions. [2024-11-27 20:27:41,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:27:41,998 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-27 20:27:41,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:42,027 INFO L225 Difference]: With dead ends: 18270 [2024-11-27 20:27:42,027 INFO L226 Difference]: Without dead ends: 10620 [2024-11-27 20:27:42,036 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 587 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=628, Invalid=2024, Unknown=0, NotChecked=0, Total=2652 [2024-11-27 20:27:42,036 INFO L435 NwaCegarLoop]: 1511 mSDtfsCounter, 16831 mSDsluCounter, 5004 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16831 SdHoareTripleChecker+Valid, 6515 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:42,037 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16831 Valid, 6515 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:27:42,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10620 states. [2024-11-27 20:27:42,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10620 to 10152. [2024-11-27 20:27:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10152 states, 10150 states have (on average 1.2829556650246305) internal successors, (13022), 10151 states have internal predecessors, (13022), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:42,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10152 states to 10152 states and 13022 transitions. [2024-11-27 20:27:42,639 INFO L78 Accepts]: Start accepts. Automaton has 10152 states and 13022 transitions. Word has length 61 [2024-11-27 20:27:42,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:42,639 INFO L471 AbstractCegarLoop]: Abstraction has 10152 states and 13022 transitions. [2024-11-27 20:27:42,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 5.888888888888889) internal successors, (159), 26 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:42,640 INFO L276 IsEmpty]: Start isEmpty. Operand 10152 states and 13022 transitions. [2024-11-27 20:27:42,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-27 20:27:42,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:42,642 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:42,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 20:27:42,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:42,846 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:42,846 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:42,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1104925612, now seen corresponding path program 1 times [2024-11-27 20:27:42,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:42,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463967942] [2024-11-27 20:27:42,847 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:42,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:43,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:43,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:43,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463967942] [2024-11-27 20:27:43,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463967942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:43,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:43,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:27:43,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059057514] [2024-11-27 20:27:43,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:43,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:27:43,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:43,033 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:27:43,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:27:43,034 INFO L87 Difference]: Start difference. First operand 10152 states and 13022 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:52,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:52,459 INFO L93 Difference]: Finished difference Result 12407 states and 17331 transitions. [2024-11-27 20:27:52,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:27:52,460 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-11-27 20:27:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:52,481 INFO L225 Difference]: With dead ends: 12407 [2024-11-27 20:27:52,482 INFO L226 Difference]: Without dead ends: 11654 [2024-11-27 20:27:52,486 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:27:52,487 INFO L435 NwaCegarLoop]: 744 mSDtfsCounter, 2329 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2329 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:52,487 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2329 Valid, 762 Invalid, 6507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2024-11-27 20:27:52,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11654 states. [2024-11-27 20:27:53,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11654 to 11654. [2024-11-27 20:27:53,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11654 states, 11652 states have (on average 1.2990044627531754) internal successors, (15136), 11653 states have internal predecessors, (15136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:53,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11654 states to 11654 states and 15136 transitions. [2024-11-27 20:27:53,088 INFO L78 Accepts]: Start accepts. Automaton has 11654 states and 15136 transitions. Word has length 61 [2024-11-27 20:27:53,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:53,088 INFO L471 AbstractCegarLoop]: Abstraction has 11654 states and 15136 transitions. [2024-11-27 20:27:53,088 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:27:53,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11654 states and 15136 transitions. [2024-11-27 20:27:53,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-27 20:27:53,090 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:53,090 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] [2024-11-27 20:27:53,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:27:53,090 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:53,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:53,091 INFO L85 PathProgramCache]: Analyzing trace with hash 705601745, now seen corresponding path program 1 times [2024-11-27 20:27:53,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:53,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871954766] [2024-11-27 20:27:53,091 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:53,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:53,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:54,347 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:54,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871954766] [2024-11-27 20:27:54,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871954766] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:27:54,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598383747] [2024-11-27 20:27:54,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:54,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:27:54,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:27:54,350 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:27:54,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:27:54,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:54,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-27 20:27:54,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:27:57,317 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:27:57,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:01,059 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:01,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598383747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:01,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:01,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 21, 16] total 45 [2024-11-27 20:28:01,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206075047] [2024-11-27 20:28:01,059 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:01,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 20:28:01,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:01,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 20:28:01,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=248, Invalid=1732, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:28:01,062 INFO L87 Difference]: Start difference. First operand 11654 states and 15136 transitions. Second operand has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:17,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:17,171 INFO L93 Difference]: Finished difference Result 17354 states and 22278 transitions. [2024-11-27 20:28:17,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-27 20:28:17,172 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-11-27 20:28:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:17,194 INFO L225 Difference]: With dead ends: 17354 [2024-11-27 20:28:17,194 INFO L226 Difference]: Without dead ends: 12238 [2024-11-27 20:28:17,205 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3777 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=2761, Invalid=11281, Unknown=0, NotChecked=0, Total=14042 [2024-11-27 20:28:17,206 INFO L435 NwaCegarLoop]: 1526 mSDtfsCounter, 23591 mSDsluCounter, 24432 mSDsCounter, 0 mSdLazyCounter, 1710 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23591 SdHoareTripleChecker+Valid, 25958 SdHoareTripleChecker+Invalid, 1807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:17,206 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23591 Valid, 25958 Invalid, 1807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [97 Valid, 1710 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 20:28:17,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12238 states. [2024-11-27 20:28:17,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12238 to 9988. [2024-11-27 20:28:17,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9988 states, 9986 states have (on average 1.3076306829561386) internal successors, (13058), 9987 states have internal predecessors, (13058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:17,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9988 states to 9988 states and 13058 transitions. [2024-11-27 20:28:17,909 INFO L78 Accepts]: Start accepts. Automaton has 9988 states and 13058 transitions. Word has length 62 [2024-11-27 20:28:17,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:17,909 INFO L471 AbstractCegarLoop]: Abstraction has 9988 states and 13058 transitions. [2024-11-27 20:28:17,909 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 3.688888888888889) internal successors, (166), 45 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:17,909 INFO L276 IsEmpty]: Start isEmpty. Operand 9988 states and 13058 transitions. [2024-11-27 20:28:17,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-27 20:28:17,912 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:17,912 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:28:17,924 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:18,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-27 20:28:18,117 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:18,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:18,118 INFO L85 PathProgramCache]: Analyzing trace with hash 115923907, now seen corresponding path program 1 times [2024-11-27 20:28:18,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:18,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743684758] [2024-11-27 20:28:18,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:18,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:19,345 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 31 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:19,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:19,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743684758] [2024-11-27 20:28:19,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743684758] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:19,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567325231] [2024-11-27 20:28:19,346 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:19,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:19,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:19,348 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:19,352 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:28:19,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:19,511 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 20:28:19,518 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:20,714 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:20,715 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:22,742 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 23 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:22,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567325231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:22,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:22,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 35 [2024-11-27 20:28:22,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74963041] [2024-11-27 20:28:22,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:22,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-27 20:28:22,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:22,744 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-27 20:28:22,744 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:28:22,745 INFO L87 Difference]: Start difference. First operand 9988 states and 13058 transitions. Second operand has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:34,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:28:34,382 INFO L93 Difference]: Finished difference Result 28814 states and 36255 transitions. [2024-11-27 20:28:34,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2024-11-27 20:28:34,382 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 100 [2024-11-27 20:28:34,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:28:34,403 INFO L225 Difference]: With dead ends: 28814 [2024-11-27 20:28:34,403 INFO L226 Difference]: Without dead ends: 22797 [2024-11-27 20:28:34,412 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5353 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=3030, Invalid=15060, Unknown=0, NotChecked=0, Total=18090 [2024-11-27 20:28:34,414 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 18957 mSDsluCounter, 23830 mSDsCounter, 0 mSdLazyCounter, 2248 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18957 SdHoareTripleChecker+Valid, 25399 SdHoareTripleChecker+Invalid, 2339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 2248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:28:34,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [18957 Valid, 25399 Invalid, 2339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [91 Valid, 2248 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 20:28:34,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22797 states. [2024-11-27 20:28:35,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22797 to 13367. [2024-11-27 20:28:35,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13367 states, 13365 states have (on average 1.2794612794612794) internal successors, (17100), 13366 states have internal predecessors, (17100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13367 states to 13367 states and 17100 transitions. [2024-11-27 20:28:35,409 INFO L78 Accepts]: Start accepts. Automaton has 13367 states and 17100 transitions. Word has length 100 [2024-11-27 20:28:35,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:28:35,410 INFO L471 AbstractCegarLoop]: Abstraction has 13367 states and 17100 transitions. [2024-11-27 20:28:35,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 7.685714285714286) internal successors, (269), 35 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:28:35,410 INFO L276 IsEmpty]: Start isEmpty. Operand 13367 states and 17100 transitions. [2024-11-27 20:28:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 20:28:35,413 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:28:35,413 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:28:35,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-27 20:28:35,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:35,618 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:28:35,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:28:35,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1392468563, now seen corresponding path program 1 times [2024-11-27 20:28:35,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:28:35,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541792917] [2024-11-27 20:28:35,619 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:35,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:28:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:37,782 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:37,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541792917] [2024-11-27 20:28:37,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541792917] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:28:37,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709432804] [2024-11-27 20:28:37,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:28:37,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:28:37,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:28:37,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:28:37,789 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 20:28:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:37,982 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 20:28:37,986 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:28:41,770 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:41,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:28:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:28:50,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709432804] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:28:50,963 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:28:50,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24, 25] total 69 [2024-11-27 20:28:50,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390062920] [2024-11-27 20:28:50,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:28:50,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 69 states [2024-11-27 20:28:50,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:50,966 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2024-11-27 20:28:50,967 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=387, Invalid=4305, Unknown=0, NotChecked=0, Total=4692 [2024-11-27 20:28:50,967 INFO L87 Difference]: Start difference. First operand 13367 states and 17100 transitions. Second operand has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:57,738 INFO L93 Difference]: Finished difference Result 65545 states and 80558 transitions. [2024-11-27 20:32:57,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 372 states. [2024-11-27 20:32:57,739 INFO L78 Accepts]: Start accepts. Automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-27 20:32:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:57,813 INFO L225 Difference]: With dead ends: 65545 [2024-11-27 20:32:57,813 INFO L226 Difference]: Without dead ends: 57198 [2024-11-27 20:32:57,838 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 592 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 435 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80021 ImplicationChecksByTransitivity, 233.8s TimeCoverageRelationStatistics Valid=24221, Invalid=166311, Unknown=0, NotChecked=0, Total=190532 [2024-11-27 20:32:57,839 INFO L435 NwaCegarLoop]: 1718 mSDtfsCounter, 27061 mSDsluCounter, 44187 mSDsCounter, 0 mSdLazyCounter, 7593 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27061 SdHoareTripleChecker+Valid, 45905 SdHoareTripleChecker+Invalid, 7964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 7593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:57,839 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27061 Valid, 45905 Invalid, 7964 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [371 Valid, 7593 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2024-11-27 20:32:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57198 states. [2024-11-27 20:32:59,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57198 to 17489. [2024-11-27 20:32:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17489 states, 17487 states have (on average 1.2637387773774804) internal successors, (22099), 17488 states have internal predecessors, (22099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:59,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17489 states to 17489 states and 22099 transitions. [2024-11-27 20:32:59,797 INFO L78 Accepts]: Start accepts. Automaton has 17489 states and 22099 transitions. Word has length 101 [2024-11-27 20:32:59,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:59,797 INFO L471 AbstractCegarLoop]: Abstraction has 17489 states and 22099 transitions. [2024-11-27 20:32:59,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 69 states, 69 states have (on average 4.101449275362318) internal successors, (283), 69 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:32:59,798 INFO L276 IsEmpty]: Start isEmpty. Operand 17489 states and 22099 transitions. [2024-11-27 20:32:59,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 20:32:59,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:59,800 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:32:59,810 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 20:33:00,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:00,001 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:00,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:00,002 INFO L85 PathProgramCache]: Analyzing trace with hash 544820049, now seen corresponding path program 1 times [2024-11-27 20:33:00,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:00,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169242686] [2024-11-27 20:33:00,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:00,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:01,361 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:01,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169242686] [2024-11-27 20:33:01,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169242686] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:01,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687860363] [2024-11-27 20:33:01,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:01,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:01,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:01,365 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:01,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 20:33:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:01,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 20:33:01,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:05,306 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:05,306 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 22 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:09,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687860363] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:09,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:09,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 18, 18] total 48 [2024-11-27 20:33:09,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689294247] [2024-11-27 20:33:09,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:09,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 20:33:09,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:09,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 20:33:09,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=200, Invalid=2056, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:33:09,358 INFO L87 Difference]: Start difference. First operand 17489 states and 22099 transitions. Second operand has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:38,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:38,272 INFO L93 Difference]: Finished difference Result 35503 states and 44148 transitions. [2024-11-27 20:33:38,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2024-11-27 20:33:38,273 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-27 20:33:38,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:38,296 INFO L225 Difference]: With dead ends: 35503 [2024-11-27 20:33:38,296 INFO L226 Difference]: Without dead ends: 25190 [2024-11-27 20:33:38,304 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6561 ImplicationChecksByTransitivity, 24.3s TimeCoverageRelationStatistics Valid=3447, Invalid=18015, Unknown=0, NotChecked=0, Total=21462 [2024-11-27 20:33:38,305 INFO L435 NwaCegarLoop]: 1558 mSDtfsCounter, 24136 mSDsluCounter, 26986 mSDsCounter, 0 mSdLazyCounter, 2684 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24136 SdHoareTripleChecker+Valid, 28544 SdHoareTripleChecker+Invalid, 2799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:38,305 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24136 Valid, 28544 Invalid, 2799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 2684 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-27 20:33:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25190 states. [2024-11-27 20:33:40,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25190 to 18618. [2024-11-27 20:33:40,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18618 states, 18616 states have (on average 1.2628384185646755) internal successors, (23509), 18617 states have internal predecessors, (23509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18618 states to 18618 states and 23509 transitions. [2024-11-27 20:33:40,307 INFO L78 Accepts]: Start accepts. Automaton has 18618 states and 23509 transitions. Word has length 101 [2024-11-27 20:33:40,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:40,307 INFO L471 AbstractCegarLoop]: Abstraction has 18618 states and 23509 transitions. [2024-11-27 20:33:40,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.875) internal successors, (282), 48 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:40,308 INFO L276 IsEmpty]: Start isEmpty. Operand 18618 states and 23509 transitions. [2024-11-27 20:33:40,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 20:33:40,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:40,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2024-11-27 20:33:40,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 20:33:40,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-27 20:33:40,511 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:40,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:40,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2091286795, now seen corresponding path program 1 times [2024-11-27 20:33:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:40,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278232515] [2024-11-27 20:33:40,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:40,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:41,477 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 25 proven. 56 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-27 20:33:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278232515] [2024-11-27 20:33:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278232515] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140870704] [2024-11-27 20:33:41,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:41,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:41,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:41,480 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:41,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 20:33:41,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:41,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-27 20:33:41,693 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 61 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:42,931 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:45,578 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140870704] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:33:45,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:33:45,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 29 [2024-11-27 20:33:45,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954727570] [2024-11-27 20:33:45,579 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:33:45,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-27 20:33:45,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:45,582 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-27 20:33:45,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=708, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:33:45,582 INFO L87 Difference]: Start difference. First operand 18618 states and 23509 transitions. Second operand has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:33:51,838 INFO L93 Difference]: Finished difference Result 38428 states and 47858 transitions. [2024-11-27 20:33:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-27 20:33:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 101 [2024-11-27 20:33:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:33:51,864 INFO L225 Difference]: With dead ends: 38428 [2024-11-27 20:33:51,864 INFO L226 Difference]: Without dead ends: 25759 [2024-11-27 20:33:51,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 732 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=780, Invalid=2880, Unknown=0, NotChecked=0, Total=3660 [2024-11-27 20:33:51,876 INFO L435 NwaCegarLoop]: 1527 mSDtfsCounter, 17005 mSDsluCounter, 14165 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17005 SdHoareTripleChecker+Valid, 15692 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:33:51,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17005 Valid, 15692 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:33:51,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25759 states. [2024-11-27 20:33:53,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25759 to 16080. [2024-11-27 20:33:53,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16080 states, 16078 states have (on average 1.2641497698718747) internal successors, (20325), 16079 states have internal predecessors, (20325), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:53,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16080 states to 16080 states and 20325 transitions. [2024-11-27 20:33:53,710 INFO L78 Accepts]: Start accepts. Automaton has 16080 states and 20325 transitions. Word has length 101 [2024-11-27 20:33:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:33:53,710 INFO L471 AbstractCegarLoop]: Abstraction has 16080 states and 20325 transitions. [2024-11-27 20:33:53,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.413793103448276) internal successors, (244), 29 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:53,710 INFO L276 IsEmpty]: Start isEmpty. Operand 16080 states and 20325 transitions. [2024-11-27 20:33:53,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 20:33:53,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:33:53,713 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:33:53,726 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 20:33:53,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:53,917 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:33:53,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:53,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1624422541, now seen corresponding path program 1 times [2024-11-27 20:33:53,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:53,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657679934] [2024-11-27 20:33:53,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:53,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:53,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:55,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657679934] [2024-11-27 20:33:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657679934] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:55,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446778054] [2024-11-27 20:33:55,837 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:55,837 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:55,837 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:55,841 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:55,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 20:33:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:56,051 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-27 20:33:56,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:01,140 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:01,140 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:34:08,622 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 31 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:08,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446778054] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:34:08,622 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:34:08,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27, 24] total 68 [2024-11-27 20:34:08,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591374491] [2024-11-27 20:34:08,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:34:08,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-27 20:34:08,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:08,624 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-27 20:34:08,624 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=4178, Unknown=0, NotChecked=0, Total=4556 [2024-11-27 20:34:08,625 INFO L87 Difference]: Start difference. First operand 16080 states and 20325 transitions. Second operand has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:27,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:36:27,448 INFO L93 Difference]: Finished difference Result 31819 states and 39384 transitions. [2024-11-27 20:36:27,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 210 states. [2024-11-27 20:36:27,449 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-27 20:36:27,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:36:27,474 INFO L225 Difference]: With dead ends: 31819 [2024-11-27 20:36:27,475 INFO L226 Difference]: Without dead ends: 22826 [2024-11-27 20:36:27,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25356 ImplicationChecksByTransitivity, 133.0s TimeCoverageRelationStatistics Valid=9867, Invalid=64389, Unknown=0, NotChecked=0, Total=74256 [2024-11-27 20:36:27,485 INFO L435 NwaCegarLoop]: 1650 mSDtfsCounter, 40913 mSDsluCounter, 43228 mSDsCounter, 0 mSdLazyCounter, 5058 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40913 SdHoareTripleChecker+Valid, 44878 SdHoareTripleChecker+Invalid, 5381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 5058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:36:27,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40913 Valid, 44878 Invalid, 5381 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [323 Valid, 5058 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2024-11-27 20:36:27,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22826 states. [2024-11-27 20:36:29,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22826 to 19112. [2024-11-27 20:36:29,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19112 states, 19110 states have (on average 1.2545787545787546) internal successors, (23975), 19111 states have internal predecessors, (23975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19112 states to 19112 states and 23975 transitions. [2024-11-27 20:36:30,148 INFO L78 Accepts]: Start accepts. Automaton has 19112 states and 23975 transitions. Word has length 102 [2024-11-27 20:36:30,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:36:30,149 INFO L471 AbstractCegarLoop]: Abstraction has 19112 states and 23975 transitions. [2024-11-27 20:36:30,149 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 68 states have (on average 4.0588235294117645) internal successors, (276), 68 states have internal predecessors, (276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:36:30,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19112 states and 23975 transitions. [2024-11-27 20:36:30,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 20:36:30,150 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:36:30,150 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:36:30,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 20:36:30,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:30,351 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:36:30,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:36:30,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1670855763, now seen corresponding path program 1 times [2024-11-27 20:36:30,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:36:30,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415874140] [2024-11-27 20:36:30,352 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:30,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:36:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:32,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:36:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415874140] [2024-11-27 20:36:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415874140] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:36:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192497876] [2024-11-27 20:36:32,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:36:32,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:36:32,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:36:32,290 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:36:32,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 20:36:32,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:36:32,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-27 20:36:32,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:36:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:36,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:36:42,637 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 40 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:36:42,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192497876] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:36:42,637 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:36:42,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23, 21] total 62 [2024-11-27 20:36:42,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724903794] [2024-11-27 20:36:42,638 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:36:42,638 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2024-11-27 20:36:42,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:36:42,639 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2024-11-27 20:36:42,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=390, Invalid=3392, Unknown=0, NotChecked=0, Total=3782 [2024-11-27 20:36:42,640 INFO L87 Difference]: Start difference. First operand 19112 states and 23975 transitions. Second operand has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:10,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:37:10,301 INFO L93 Difference]: Finished difference Result 28535 states and 35349 transitions. [2024-11-27 20:37:10,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-27 20:37:10,301 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 102 [2024-11-27 20:37:10,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:37:10,322 INFO L225 Difference]: With dead ends: 28535 [2024-11-27 20:37:10,322 INFO L226 Difference]: Without dead ends: 22732 [2024-11-27 20:37:10,329 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 163 SyntacticMatches, 2 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5867 ImplicationChecksByTransitivity, 25.2s TimeCoverageRelationStatistics Valid=3437, Invalid=18025, Unknown=0, NotChecked=0, Total=21462 [2024-11-27 20:37:10,329 INFO L435 NwaCegarLoop]: 1569 mSDtfsCounter, 19741 mSDsluCounter, 32844 mSDsCounter, 0 mSdLazyCounter, 2434 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19741 SdHoareTripleChecker+Valid, 34413 SdHoareTripleChecker+Invalid, 2543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:37:10,330 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [19741 Valid, 34413 Invalid, 2543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [109 Valid, 2434 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2024-11-27 20:37:10,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22732 states. [2024-11-27 20:37:13,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22732 to 20625. [2024-11-27 20:37:13,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20625 states, 20623 states have (on average 1.2486059254230713) internal successors, (25750), 20624 states have internal predecessors, (25750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:13,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20625 states to 20625 states and 25750 transitions. [2024-11-27 20:37:13,316 INFO L78 Accepts]: Start accepts. Automaton has 20625 states and 25750 transitions. Word has length 102 [2024-11-27 20:37:13,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:37:13,316 INFO L471 AbstractCegarLoop]: Abstraction has 20625 states and 25750 transitions. [2024-11-27 20:37:13,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 62 states have (on average 4.306451612903226) internal successors, (267), 62 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:13,316 INFO L276 IsEmpty]: Start isEmpty. Operand 20625 states and 25750 transitions. [2024-11-27 20:37:13,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-27 20:37:13,318 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:37:13,318 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:37:13,331 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-27 20:37:13,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:13,522 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:37:13,523 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:37:13,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1363694125, now seen corresponding path program 1 times [2024-11-27 20:37:13,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:37:13,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949787104] [2024-11-27 20:37:13,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:37:13,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:37:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:14,365 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 45 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:14,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949787104] [2024-11-27 20:37:14,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949787104] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:14,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1664930780] [2024-11-27 20:37:14,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:37:14,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:14,366 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:37:14,369 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:37:14,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-27 20:37:14,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:14,566 INFO L256 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 20:37:14,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:37:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 51 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:17,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:37:21,419 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:21,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1664930780] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:37:21,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:37:21,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 17] total 45 [2024-11-27 20:37:21,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543169400] [2024-11-27 20:37:21,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:37:21,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-27 20:37:21,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:37:21,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-27 20:37:21,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=223, Invalid=1757, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 20:37:21,421 INFO L87 Difference]: Start difference. First operand 20625 states and 25750 transitions. Second operand has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:38,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:37:38,501 INFO L93 Difference]: Finished difference Result 56694 states and 69916 transitions. [2024-11-27 20:37:38,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2024-11-27 20:37:38,501 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2024-11-27 20:37:38,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:37:38,539 INFO L225 Difference]: With dead ends: 56694 [2024-11-27 20:37:38,539 INFO L226 Difference]: Without dead ends: 40650 [2024-11-27 20:37:38,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2095 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=1857, Invalid=7845, Unknown=0, NotChecked=0, Total=9702 [2024-11-27 20:37:38,554 INFO L435 NwaCegarLoop]: 1553 mSDtfsCounter, 25976 mSDsluCounter, 22616 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25976 SdHoareTripleChecker+Valid, 24169 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:37:38,554 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25976 Valid, 24169 Invalid, 2304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [92 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:37:38,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40650 states. [2024-11-27 20:37:42,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40650 to 21268. [2024-11-27 20:37:42,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21268 states, 21266 states have (on average 1.2464497319665193) internal successors, (26507), 21267 states have internal predecessors, (26507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:42,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21268 states to 21268 states and 26507 transitions. [2024-11-27 20:37:42,255 INFO L78 Accepts]: Start accepts. Automaton has 21268 states and 26507 transitions. Word has length 103 [2024-11-27 20:37:42,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:37:42,256 INFO L471 AbstractCegarLoop]: Abstraction has 21268 states and 26507 transitions. [2024-11-27 20:37:42,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 6.222222222222222) internal successors, (280), 45 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:37:42,256 INFO L276 IsEmpty]: Start isEmpty. Operand 21268 states and 26507 transitions. [2024-11-27 20:37:42,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 20:37:42,257 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:37:42,257 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:37:42,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-27 20:37:42,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 20:37:42,458 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:37:42,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:37:42,459 INFO L85 PathProgramCache]: Analyzing trace with hash -607646385, now seen corresponding path program 1 times [2024-11-27 20:37:42,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:37:42,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499605252] [2024-11-27 20:37:42,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:37:42,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:37:42,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:46,650 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:46,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:37:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499605252] [2024-11-27 20:37:46,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499605252] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:37:46,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770537597] [2024-11-27 20:37:46,650 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:37:46,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:37:46,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:37:46,652 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:37:46,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-27 20:37:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:37:46,851 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-27 20:37:46,853 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:37:51,077 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:51,077 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:37:54,404 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 22 proven. 73 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:37:54,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770537597] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:37:54,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:37:54,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 19, 18] total 63 [2024-11-27 20:37:54,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119532930] [2024-11-27 20:37:54,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:37:54,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-27 20:37:54,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:37:54,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-27 20:37:54,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=3651, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 20:37:54,407 INFO L87 Difference]: Start difference. First operand 21268 states and 26507 transitions. Second operand has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:33,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:38:33,803 INFO L93 Difference]: Finished difference Result 35793 states and 44166 transitions. [2024-11-27 20:38:33,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-27 20:38:33,804 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2024-11-27 20:38:33,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:38:33,830 INFO L225 Difference]: With dead ends: 35793 [2024-11-27 20:38:33,830 INFO L226 Difference]: Without dead ends: 27194 [2024-11-27 20:38:33,840 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5790 ImplicationChecksByTransitivity, 32.9s TimeCoverageRelationStatistics Valid=3580, Invalid=18770, Unknown=0, NotChecked=0, Total=22350 [2024-11-27 20:38:33,841 INFO L435 NwaCegarLoop]: 1597 mSDtfsCounter, 23222 mSDsluCounter, 41412 mSDsCounter, 0 mSdLazyCounter, 4045 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23222 SdHoareTripleChecker+Valid, 43009 SdHoareTripleChecker+Invalid, 4197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 4045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:38:33,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23222 Valid, 43009 Invalid, 4197 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [152 Valid, 4045 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2024-11-27 20:38:33,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27194 states. [2024-11-27 20:38:37,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27194 to 24120. [2024-11-27 20:38:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24120 states, 24118 states have (on average 1.2413135417530474) internal successors, (29938), 24119 states have internal predecessors, (29938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24120 states to 24120 states and 29938 transitions. [2024-11-27 20:38:38,009 INFO L78 Accepts]: Start accepts. Automaton has 24120 states and 29938 transitions. Word has length 104 [2024-11-27 20:38:38,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:38:38,009 INFO L471 AbstractCegarLoop]: Abstraction has 24120 states and 29938 transitions. [2024-11-27 20:38:38,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 63 states have (on average 4.5396825396825395) internal successors, (286), 63 states have internal predecessors, (286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:38:38,009 INFO L276 IsEmpty]: Start isEmpty. Operand 24120 states and 29938 transitions. [2024-11-27 20:38:38,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 20:38:38,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:38:38,011 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2024-11-27 20:38:38,024 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-27 20:38:38,211 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 20:38:38,211 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:38:38,212 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:38:38,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1929475957, now seen corresponding path program 1 times [2024-11-27 20:38:38,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:38:38,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542391022] [2024-11-27 20:38:38,212 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:38:38,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:38:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:38:41,011 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:38:41,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:38:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542391022] [2024-11-27 20:38:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542391022] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:38:41,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054009642] [2024-11-27 20:38:41,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:38:41,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:38:41,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:38:41,013 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:38:41,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_272acc2a-40a1-4002-8584-bd18efdd1877/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-27 20:38:41,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:38:41,209 INFO L256 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 20:38:41,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:38:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 41 proven. 54 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:38:45,835 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:38:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 31 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:38:59,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054009642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:38:59,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:38:59,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 25, 27] total 77 [2024-11-27 20:38:59,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486112566] [2024-11-27 20:38:59,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:38:59,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 77 states [2024-11-27 20:38:59,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:38:59,169 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2024-11-27 20:38:59,170 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=5446, Unknown=0, NotChecked=0, Total=5852 [2024-11-27 20:38:59,170 INFO L87 Difference]: Start difference. First operand 24120 states and 29938 transitions. Second operand has 77 states, 77 states have (on average 3.6103896103896105) internal successors, (278), 77 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)